2 * This file handles accepting Director Commands
4 * Most Director commands are handled here, with the
5 * exception of the Job command command and subsequent
6 * subcommands that are handled
9 * N.B. in this file, in general we must use P(dev->mutex) rather
10 * than lock_device(dev) so that we can examine the blocked
11 * state rather than blocking ourselves because a Job
12 * thread has the device blocked. In some "safe" cases,
13 * we can do things to a blocked device. CAREFUL!!!!
15 * File daemon commands are handled in fdcmd.c
17 * Kern Sibbald, May MMI
23 Copyright (C) 2001-2005 Kern Sibbald
25 This program is free software; you can redistribute it and/or
26 modify it under the terms of the GNU General Public License
27 version 2 as amended with additional clauses defined in the
28 file LICENSE in the main source directory.
30 This program is distributed in the hope that it will be useful,
31 but WITHOUT ANY WARRANTY; without even the implied warranty of
32 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
33 the file LICENSE for additional details.
40 /* Exported variables */
42 /* Imported variables */
43 extern BSOCK *filed_chan;
44 extern int r_first, r_last;
45 extern struct s_res resources[];
46 extern char my_name[];
47 extern time_t daemon_start_time;
48 extern struct s_last_job last_job;
49 extern bool init_done;
51 /* Static variables */
52 static char derrmsg[] = "3900 Invalid command\n";
53 static char OKsetdebug[] = "3000 OK setdebug=%d\n";
54 static char illegal_cmd[] = "3997 Illegal command for a Director with Monitor directive enabled\n";
56 /* Imported functions */
57 extern void terminate_child();
58 extern bool job_cmd(JCR *jcr);
59 extern bool use_cmd(JCR *jcr);
60 extern bool run_cmd(JCR *jcr);
61 extern bool status_cmd(JCR *sjcr);
62 extern bool qstatus_cmd(JCR *jcr);
63 //extern bool query_cmd(JCR *jcr);
65 /* Forward referenced functions */
66 static bool label_cmd(JCR *jcr);
67 static bool relabel_cmd(JCR *jcr);
68 static bool readlabel_cmd(JCR *jcr);
69 static bool release_cmd(JCR *jcr);
70 static bool setdebug_cmd(JCR *jcr);
71 static bool cancel_cmd(JCR *cjcr);
72 static bool mount_cmd(JCR *jcr);
73 static bool unmount_cmd(JCR *jcr);
74 static bool autochanger_cmd(JCR *sjcr);
75 static bool do_label(JCR *jcr, int relabel);
76 static DEVICE *find_device(JCR *jcr, POOL_MEM &dev_name);
77 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot);
78 static void label_volume_if_ok(JCR *jcr, DEVICE *dev, char *oldname,
79 char *newname, char *poolname,
80 int Slot, int relabel);
81 static bool try_autoload_device(JCR *jcr, int slot, const char *VolName);
82 static void send_dir_busy_message(BSOCK *dir, DEVICE *dev);
86 bool (*func)(JCR *jcr);
87 int monitoraccess; /* specify if monitors have access to this function */
91 * The following are the recognized commands from the Director.
93 static struct s_cmds cmds[] = {
94 {"JobId=", job_cmd, 0}, /* start Job */
95 {"autochanger", autochanger_cmd, 0},
96 {"bootstrap", bootstrap_cmd, 0},
97 {"cancel", cancel_cmd, 0},
98 {"label", label_cmd, 0}, /* label a tape */
99 {"mount", mount_cmd, 0},
100 {"readlabel", readlabel_cmd, 0},
101 {"release", release_cmd, 0},
102 {"relabel", relabel_cmd, 0}, /* relabel a tape */
103 {"setdebug=", setdebug_cmd, 0}, /* set debug level */
104 {"status", status_cmd, 1},
105 {".status", qstatus_cmd, 1},
106 {"unmount", unmount_cmd, 0},
107 {"use storage=", use_cmd, 0},
109 // {"query", query_cmd, 0},
110 {NULL, NULL} /* list terminator */
115 * Connection request. We accept connections either from the
116 * Director or a Client (File daemon).
118 * Note, we are running as a seperate thread of the Storage daemon.
119 * and it is because a Director has made a connection with
120 * us on the "Message" channel.
122 * Basic tasks done here:
123 * - Create a JCR record
124 * - If it was from the FD, call handle_filed_connection()
125 * - Authenticate the Director
126 * - We wait for a command
127 * - We execute the command
128 * - We continue or exit depending on the return status
130 void *handle_connection_request(void *arg)
132 BSOCK *bs = (BSOCK *)arg;
137 char name[MAX_NAME_LENGTH];
139 if (bnet_recv(bs) <= 0) {
140 Emsg0(M_ERROR, 0, _("Connection request failed.\n"));
146 * Do a sanity check on the message received
148 if (bs->msglen < 25 || bs->msglen > (int)sizeof(name)-25) {
149 Emsg1(M_ERROR, 0, _("Invalid connection. Len=%d\n"), bs->msglen);
154 * See if this is a File daemon connection. If so
157 Dmsg1(110, "Conn: %s", bs->msg);
158 if (sscanf(bs->msg, "Hello Start Job %127s", name) == 1) {
159 handle_filed_connection(bs, name);
164 * This is a connection from the Director, so setup a JCR
166 Dmsg0(110, "Start Dir Job\n");
167 jcr = new_jcr(sizeof(JCR), stored_free_jcr); /* create Job Control Record */
168 jcr->dir_bsock = bs; /* save Director bsock */
169 jcr->dir_bsock->jcr = jcr;
170 jcr->dcrs = New(alist(10, not_owned_by_alist));
171 /* Initialize FD start condition variable */
172 int errstat = pthread_cond_init(&jcr->job_start_wait, NULL);
174 Jmsg1(jcr, M_FATAL, 0, _("Unable to init job cond variable: ERR=%s\n"), strerror(errstat));
178 Dmsg0(1000, "stored in start_job\n");
181 * Authenticate the Director
183 if (!authenticate_director(jcr)) {
184 Jmsg(jcr, M_FATAL, 0, _("Unable to authenticate Director\n"));
187 Dmsg0(90, "Message channel init completed.\n");
189 for (quit=false; !quit;) {
191 if ((bnet_stat = bnet_recv(bs)) <= 0) {
192 break; /* connection terminated */
194 Dmsg1(199, "<dird: %s\n", bs->msg);
195 /* Ensure that device initialization is complete */
200 for (i=0; cmds[i].cmd; i++) {
201 if (strncmp(cmds[i].cmd, bs->msg, strlen(cmds[i].cmd)) == 0) {
202 if ((!cmds[i].monitoraccess) && (jcr->director->monitor)) {
203 Dmsg1(100, "Command %s illegal.\n", cmds[i].cmd);
204 bnet_fsend(bs, illegal_cmd);
205 bnet_sig(bs, BNET_EOD);
208 Dmsg1(200, "Do command: %s\n", cmds[i].cmd);
209 if (!cmds[i].func(jcr)) { /* do command */
210 quit = true; /* error, get out */
211 Dmsg1(190, "Command %s requsts quit\n", cmds[i].cmd);
213 found = true; /* indicate command found */
217 if (!found) { /* command not found */
218 bnet_fsend(bs, derrmsg);
223 generate_daemon_event(jcr, "JobEnd");
224 dequeue_messages(jcr); /* send any queued messages */
225 bnet_sig(bs, BNET_TERMINATE);
231 * Set debug level as requested by the Director
234 static bool setdebug_cmd(JCR *jcr)
236 BSOCK *dir = jcr->dir_bsock;
237 int level, trace_flag;
239 Dmsg1(10, "setdebug_cmd: %s", dir->msg);
240 if (sscanf(dir->msg, "setdebug=%d trace=%d", &level, &trace_flag) != 2 || level < 0) {
241 bnet_fsend(dir, "3991 Bad setdebug command: %s\n", dir->msg);
245 set_trace(trace_flag);
246 return bnet_fsend(dir, OKsetdebug, level);
253 static bool cancel_cmd(JCR *cjcr)
255 BSOCK *dir = cjcr->dir_bsock;
257 char Job[MAX_NAME_LENGTH];
260 if (sscanf(dir->msg, "cancel Job=%127s", Job) == 1) {
261 if (!(jcr=get_jcr_by_full_name(Job))) {
262 bnet_fsend(dir, _("3902 Job %s not found.\n"), Job);
265 oldStatus = jcr->JobStatus;
266 set_jcr_job_status(jcr, JS_Canceled);
267 if (!jcr->authenticated && oldStatus == JS_WaitFD) {
268 pthread_cond_signal(&jcr->job_start_wait); /* wake waiting thread */
271 if (jcr->file_bsock) {
272 bnet_sig(jcr->file_bsock, BNET_TERMINATE);
274 /* If thread waiting on mount, wake him */
275 if (jcr->dcr && jcr->dcr->dev && jcr->dcr->dev->waiting_for_mount()) {
276 pthread_cond_signal(&jcr->dcr->dev->wait_next_vol);
277 pthread_cond_broadcast(&wait_device_release);
279 bnet_fsend(dir, _("3000 Job %s marked to be canceled.\n"), jcr->Job);
283 bnet_fsend(dir, _("3903 Error scanning cancel command.\n"));
285 bnet_sig(dir, BNET_EOD);
293 static bool label_cmd(JCR *jcr)
295 return do_label(jcr, 0);
298 static bool relabel_cmd(JCR *jcr)
300 return do_label(jcr, 1);
303 static bool do_label(JCR *jcr, int relabel)
305 POOLMEM *newname, *oldname, *poolname, *mtype;
307 BSOCK *dir = jcr->dir_bsock;
312 newname = get_memory(dir->msglen+1);
313 oldname = get_memory(dir->msglen+1);
314 poolname = get_memory(dir->msglen+1);
315 mtype = get_memory(dir->msglen+1);
317 if (sscanf(dir->msg, "relabel %127s OldName=%127s NewName=%127s PoolName=%127s MediaType=%127s Slot=%d",
318 dev_name.c_str(), oldname, newname, poolname, mtype, &slot) == 6) {
323 if (sscanf(dir->msg, "label %127s VolumeName=%127s PoolName=%127s MediaType=%127s Slot=%d",
324 dev_name.c_str(), newname, poolname, mtype, &slot) == 5) {
329 unbash_spaces(newname);
330 unbash_spaces(oldname);
331 unbash_spaces(poolname);
332 unbash_spaces(mtype);
333 dev = find_device(jcr, dev_name);
335 P(dev->mutex); /* Use P to avoid indefinite block */
336 if (!dev->is_open()) {
337 Dmsg0(400, "Can relabel. Device is not open\n");
338 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
339 force_close_device(dev);
340 /* Under certain "safe" conditions, we can steal the lock */
341 } else if (dev->can_steal_lock()) {
342 Dmsg0(400, "Can relabel. can_steal_lock\n");
343 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
344 } else if (dev->is_busy() || dev->is_blocked()) {
345 send_dir_busy_message(dir, dev);
346 } else { /* device not being used */
347 Dmsg0(400, "Can relabel. device not used\n");
348 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
352 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), dev_name.c_str());
355 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
356 pm_strcpy(jcr->errmsg, dir->msg);
357 bnet_fsend(dir, _("3903 Error scanning label command: %s\n"), jcr->errmsg);
359 free_memory(oldname);
360 free_memory(newname);
361 free_memory(poolname);
363 bnet_sig(dir, BNET_EOD);
368 * Read the tape label and determine if we can safely
369 * label the tape (not a Bacula volume), then label it.
371 * Enter with the mutex set
373 static void label_volume_if_ok(JCR *jcr, DEVICE *dev, char *oldname,
374 char *newname, char *poolname,
375 int slot, int relabel)
377 BSOCK *dir = jcr->dir_bsock;
383 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
384 Dmsg1(100, "Stole device %s lock, writing label.\n", dev->print_name());
386 /* Note, try_autoload_device() opens the device */
387 if (!try_autoload_device(jcr, slot, newname)) {
388 goto bail_out; /* error */
391 /* See what we have for a Volume */
392 label_status = read_dev_volume_label(dcr);
394 switch(label_status) {
396 case VOL_VERSION_ERROR:
397 case VOL_LABEL_ERROR:
401 "3920 Cannot label Volume because it is already labeled: \"%s\"\n"),
402 dev->VolHdr.VolumeName);
405 /* Relabel request. If oldname matches, continue */
406 if (strcmp(oldname, dev->VolHdr.VolumeName) != 0) {
407 bnet_fsend(dir, _("3921 Wrong volume mounted.\n"));
410 if (dev->label_type != B_BACULA_LABEL) {
411 bnet_fsend(dir, _("3922 Cannot relabel an ANSI/IBM labeled Volume.\n"));
414 free_volume(dev); /* release old volume name */
415 /* Fall through wanted! */
418 if (!write_new_volume_label_to_dev(dcr, newname, poolname)) {
419 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
422 bstrncpy(dcr->VolumeName, newname, sizeof(dcr->VolumeName));
423 /* The following 3000 OK label. string is scanned in ua_label.c */
424 bnet_fsend(dir, "3000 OK label. Volume=%s Device=%s\n",
425 newname, dev->print_name());
428 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
431 bnet_fsend(dir, _("3913 Cannot label Volume. "
432 "Unknown status %d from read_volume_label()\n"), label_status);
437 if (!dev->is_open()) {
440 give_back_device_lock(dev, &hold);
446 * Read the tape label
448 * Enter with the mutex set
450 static bool read_label(DCR *dcr)
454 BSOCK *dir = jcr->dir_bsock;
456 DEVICE *dev = dcr->dev;
458 steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
460 dcr->VolumeName[0] = 0;
461 dev->clear_labeled(); /* force read of label */
462 switch (read_dev_volume_label(dcr)) {
464 bnet_fsend(dir, _("3001 Mounted Volume: %s\n"), dev->VolHdr.VolumeName);
468 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
469 dev->print_name(), jcr->errmsg);
473 give_back_device_lock(dev, &hold);
477 static DEVICE *find_device(JCR *jcr, POOL_MEM &devname)
480 AUTOCHANGER *changer;
483 unbash_spaces(devname);
484 foreach_res(device, R_DEVICE) {
485 /* Find resource, and make sure we were able to open it */
486 if (fnmatch(device->hdr.name, devname.c_str(), 0) == 0) {
488 device->dev = init_dev(jcr, device);
491 Jmsg(jcr, M_WARNING, 0, _("\n"
492 " Device \"%s\" requested by DIR could not be opened or does not exist.\n"),
496 Dmsg1(20, "Found device %s\n", device->hdr.name);
501 foreach_res(changer, R_AUTOCHANGER) {
502 /* Find resource, and make sure we were able to open it */
503 if (fnmatch(devname.c_str(), changer->hdr.name, 0) == 0) {
504 /* Try each device in this AutoChanger */
505 foreach_alist(device, changer->device) {
506 Dmsg1(100, "Try changer device %s\n", device->hdr.name);
508 device->dev = init_dev(jcr, device);
511 Dmsg1(100, "Device %s could not be opened. Skipped\n", devname.c_str());
512 Jmsg(jcr, M_WARNING, 0, _("\n"
513 " Device \"%s\" in changer \"%s\" requested by DIR could not be opened or does not exist.\n"),
514 device->hdr.name, devname.c_str());
517 if (!device->dev->autoselect) {
518 continue; /* device is not available */
520 Dmsg1(20, "Found changer device %s\n", device->hdr.name);
524 break; /* we found it but could not open a device */
529 jcr->dcr = new_dcr(jcr, device->dev);
530 jcr->dcr->device = device;
531 return jcr->dcr->dev;
538 * Mount command from Director
540 static bool mount_cmd(JCR *jcr)
543 BSOCK *dir = jcr->dir_bsock;
547 if (sscanf(dir->msg, "mount %127s", devname.c_str()) == 1) {
548 dev = find_device(jcr, devname);
551 P(dev->mutex); /* Use P to avoid indefinite block */
552 switch (dev->dev_blocked) { /* device blocked? */
553 case BST_WAITING_FOR_SYSOP:
554 /* Someone is waiting, wake him */
555 Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
556 dev->dev_blocked = BST_MOUNT;
557 bnet_fsend(dir, "3001 OK mount. Device=%s\n",
559 pthread_cond_broadcast(&dev->wait_next_vol);
560 pthread_cond_broadcast(&wait_device_release);
563 /* In both of these two cases, we (the user) unmounted the Volume */
564 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
566 /* We freed the device, so reopen it and wake any waiting threads */
567 if (dev->open(dcr, OPEN_READ_WRITE) < 0) {
568 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
572 read_dev_volume_label(dcr);
573 if (dev->dev_blocked == BST_UNMOUNTED) {
574 /* We blocked the device, so unblock it */
575 Dmsg0(100, "Unmounted. Unblocking device\n");
576 read_label(dcr); /* this should not be necessary */
579 Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
580 dev->dev_blocked = BST_MOUNT;
582 if (dev->is_labeled()) {
583 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
584 dev->print_name(), dev->VolHdr.VolumeName);
586 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
587 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
590 pthread_cond_broadcast(&dev->wait_next_vol);
591 pthread_cond_broadcast(&wait_device_release);
594 case BST_DOING_ACQUIRE:
595 bnet_fsend(dir, _("3001 Device %s is doing acquire.\n"),
599 case BST_WRITING_LABEL:
600 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
604 case BST_NOT_BLOCKED:
605 if (dev->is_open()) {
606 if (dev->is_labeled()) {
607 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
608 dev->print_name(), dev->VolHdr.VolumeName);
610 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
611 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
614 } else if (dev->is_tape()) {
615 if (dev->open(dcr, OPEN_READ_WRITE) < 0) {
616 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
621 if (dev->is_labeled()) {
622 bnet_fsend(dir, _("3001 Device %s is already mounted with Volume \"%s\"\n"),
623 dev->print_name(), dev->VolHdr.VolumeName);
625 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
626 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
629 } else if (dev->is_dvd()) {
630 if (mount_dev(dev, 1)) {
631 bnet_fsend(dir, _("3002 Device %s is mounted.\n"),
634 bnet_fsend(dir, "3907 %s", strerror_dev(dev));
636 } else { /* must be file */
637 bnet_fsend(dir, _("3906 File device %s is always mounted.\n"),
643 bnet_fsend(dir, _("3905 Bizarre wait state %d\n"), dev->dev_blocked);
648 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), devname.c_str());
651 pm_strcpy(jcr->errmsg, dir->msg);
652 bnet_fsend(dir, _("3909 Error scanning mount command: %s\n"), jcr->errmsg);
654 bnet_sig(dir, BNET_EOD);
659 * unmount command from Director
661 static bool unmount_cmd(JCR *jcr)
664 BSOCK *dir = jcr->dir_bsock;
667 if (sscanf(dir->msg, "unmount %127s", devname.c_str()) == 1) {
668 dev = find_device(jcr, devname);
670 P(dev->mutex); /* Use P to avoid indefinite block */
671 if (!dev->is_open()) {
672 Dmsg0(90, "Device already unmounted\n");
673 bnet_fsend(dir, _("3901 Device %s is already unmounted.\n"),
676 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP) {
677 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
679 offline_or_rewind_dev(dev);
680 force_close_device(dev);
681 dev->dev_blocked = BST_UNMOUNTED_WAITING_FOR_SYSOP;
682 bnet_fsend(dir, _("3001 Device %s unmounted.\n"),
685 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
686 bnet_fsend(dir, _("3902 Device %s is busy in acquire.\n"),
689 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
690 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
693 } else if (dev->is_busy()) {
694 send_dir_busy_message(dir, dev);
695 } else { /* device not being used */
696 Dmsg0(90, "Device not in use, unmounting\n");
697 /* On FreeBSD, I am having ASSERT() failures in block_device()
698 * and I can only imagine that the thread id that we are
699 * leaving in no_wait_id is being re-used. So here,
700 * we simply do it by hand. Gross, but a solution.
702 /* block_device(dev, BST_UNMOUNTED); replace with 2 lines below */
703 dev->dev_blocked = BST_UNMOUNTED;
705 offline_or_rewind_dev(dev);
706 force_close_device(dev);
707 bnet_fsend(dir, _("3002 Device %s unmounted.\n"),
712 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), devname.c_str());
715 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
716 pm_strcpy(jcr->errmsg, dir->msg);
717 bnet_fsend(dir, _("3907 Error scanning unmount command: %s\n"), jcr->errmsg);
719 bnet_sig(dir, BNET_EOD);
724 * Release command from Director. This rewinds the device and if
725 * configured does a offline and ensures that Bacula will
726 * re-read the label of the tape before continuing. This gives
727 * the operator the chance to change the tape anytime before the
730 static bool release_cmd(JCR *jcr)
733 BSOCK *dir = jcr->dir_bsock;
736 if (sscanf(dir->msg, "release %127s", devname.c_str()) == 1) {
737 dev = find_device(jcr, devname);
739 P(dev->mutex); /* Use P to avoid indefinite block */
740 if (!dev->is_open()) {
741 Dmsg0(90, "Device already released\n");
742 bnet_fsend(dir, _("3911 Device %s already released.\n"),
745 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
746 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP) {
747 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
749 bnet_fsend(dir, _("3912 Device %s waiting for mount.\n"),
752 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
753 bnet_fsend(dir, _("3913 Device %s is busy in acquire.\n"),
756 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
757 bnet_fsend(dir, _("3914 Device %s is being labeled.\n"),
760 } else if (dev->is_busy()) {
761 send_dir_busy_message(dir, dev);
762 } else { /* device not being used */
763 Dmsg0(90, "Device not in use, unmounting\n");
764 release_volume(jcr->dcr);
765 bnet_fsend(dir, _("3012 Device %s released.\n"),
770 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), devname.c_str());
773 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
774 pm_strcpy(jcr->errmsg, dir->msg);
775 bnet_fsend(dir, _("3917 Error scanning release command: %s\n"), jcr->errmsg);
777 bnet_sig(dir, BNET_EOD);
784 * Autochanger command from Director
786 static bool autochanger_cmd(JCR *jcr)
789 BSOCK *dir = jcr->dir_bsock;
792 const char *cmd = NULL;
795 if (sscanf(dir->msg, "autochanger list %127s ", devname.c_str()) == 1) {
798 } else if (sscanf(dir->msg, "autochanger slots %127s ", devname.c_str()) == 1) {
803 dev = find_device(jcr, devname);
806 P(dev->mutex); /* Use P to avoid indefinite block */
807 if (!dev->is_tape()) {
808 bnet_fsend(dir, _("3995 Device %s is not an autochanger.\n"),
810 } else if (!dev->is_open()) {
811 autochanger_cmd(dcr, dir, cmd);
812 /* Under certain "safe" conditions, we can steal the lock */
813 } else if (dev->can_steal_lock()) {
814 autochanger_cmd(dcr, dir, cmd);
815 } else if (dev->is_busy() || dev->is_blocked()) {
816 send_dir_busy_message(dir, dev);
817 } else { /* device not being used */
818 autochanger_cmd(dcr, dir, cmd);
822 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), devname.c_str());
824 } else { /* error on scanf */
825 pm_strcpy(jcr->errmsg, dir->msg);
826 bnet_fsend(dir, _("3908 Error scanning autocharger list/slots command: %s\n"),
829 bnet_sig(dir, BNET_EOD);
834 * Read and return the Volume label
836 static bool readlabel_cmd(JCR *jcr)
839 BSOCK *dir = jcr->dir_bsock;
843 if (sscanf(dir->msg, "readlabel %127s Slot=%d", devname.c_str(), &Slot) == 2) {
844 dev = find_device(jcr, devname);
846 P(dev->mutex); /* Use P to avoid indefinite block */
847 if (!dev->is_open()) {
848 read_volume_label(jcr, dev, Slot);
849 force_close_device(dev);
850 /* Under certain "safe" conditions, we can steal the lock */
851 } else if (dev->can_steal_lock()) {
852 read_volume_label(jcr, dev, Slot);
853 } else if (dev->is_busy() || dev->is_blocked()) {
854 send_dir_busy_message(dir, dev);
855 } else { /* device not being used */
856 read_volume_label(jcr, dev, Slot);
860 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), devname.c_str());
863 pm_strcpy(jcr->errmsg, dir->msg);
864 bnet_fsend(dir, _("3909 Error scanning readlabel command: %s\n"), jcr->errmsg);
866 bnet_sig(dir, BNET_EOD);
871 * Read the tape label
873 * Enter with the mutex set
875 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot)
877 BSOCK *dir = jcr->dir_bsock;
882 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
884 if (!try_autoload_device(jcr, Slot, "")) {
885 goto bail_out; /* error */
888 dev->clear_labeled(); /* force read of label */
889 switch (read_dev_volume_label(dcr)) {
891 /* DO NOT add quotes around the Volume name. It is scanned in the DIR */
892 bnet_fsend(dir, _("3001 Volume=%s Slot=%d\n"), dev->VolHdr.VolumeName, Slot);
893 Dmsg1(100, "Volume: %s\n", dev->VolHdr.VolumeName);
896 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
897 dev->print_name(), jcr->errmsg);
902 give_back_device_lock(dev, &hold);
906 static bool try_autoload_device(JCR *jcr, int slot, const char *VolName)
909 BSOCK *dir = jcr->dir_bsock;
910 DEVICE *dev = dcr->dev;
912 bstrncpy(dcr->VolumeName, VolName, sizeof(dcr->VolumeName));
913 dcr->VolCatInfo.Slot = slot;
914 dcr->VolCatInfo.InChanger = slot > 0;
915 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
919 /* Ensure that the device is open -- autoload_device() closes it */
920 if (dev->open(dcr, OPEN_READ_WRITE) < 0) {
921 bnet_fsend(dir, _("3910 Unable to open device %s: ERR=%s\n"),
922 dev->print_name(), dev->strerror());
928 static void send_dir_busy_message(BSOCK *dir, DEVICE *dev)
930 if (dev->can_read()) {
931 bnet_fsend(dir, _("3911 Device %s is busy reading.\n"),
934 bnet_fsend(dir, _("3912 Device %s is busy with %d writer(s).\n"),
935 dev->print_name(), dev->num_writers);