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. In some "safe" cases,
12 * we can do things to a blocked device. CAREFUL!!!!
14 * File daemon commands are handled in fdcmd.c
16 * Kern Sibbald, May MMI
22 Copyright (C) 2001-2005 Kern Sibbald
24 This program is free software; you can redistribute it and/or
25 modify it under the terms of the GNU General Public License as
26 published by the Free Software Foundation; either version 2 of
27 the License, or (at your option) any later version.
29 This program is distributed in the hope that it will be useful,
30 but WITHOUT ANY WARRANTY; without even the implied warranty of
31 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
32 General Public License for more details.
34 You should have received a copy of the GNU General Public
35 License along with this program; if not, write to the Free
36 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
44 /* Exported variables */
46 /* Imported variables */
47 extern BSOCK *filed_chan;
48 extern int r_first, r_last;
49 extern struct s_res resources[];
50 extern char my_name[];
51 extern time_t daemon_start_time;
52 extern struct s_last_job last_job;
54 /* Static variables */
55 static char derrmsg[] = "3900 Invalid command\n";
56 static char OKsetdebug[] = "3000 OK setdebug=%d\n";
57 static char illegal_cmd[] = "3997 Illegal command for a Director with Monitor directive enabled\n";
59 /* Imported functions */
60 extern void terminate_child();
61 extern bool job_cmd(JCR *jcr);
62 extern bool use_cmd(JCR *jcr);
63 extern bool run_cmd(JCR *jcr);
64 extern bool status_cmd(JCR *sjcr);
65 extern bool qstatus_cmd(JCR *jcr);
66 extern bool query_cmd(JCR *jcr);
68 /* Forward referenced functions */
69 static bool label_cmd(JCR *jcr);
70 static bool relabel_cmd(JCR *jcr);
71 static bool readlabel_cmd(JCR *jcr);
72 static bool release_cmd(JCR *jcr);
73 static bool setdebug_cmd(JCR *jcr);
74 static bool cancel_cmd(JCR *cjcr);
75 static bool mount_cmd(JCR *jcr);
76 static bool unmount_cmd(JCR *jcr);
77 static bool autochanger_cmd(JCR *sjcr);
78 static bool do_label(JCR *jcr, int relabel);
79 static DEVICE *find_device(JCR *jcr, POOL_MEM &dname);
80 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot);
81 static void label_volume_if_ok(JCR *jcr, DEVICE *dev, char *oldname,
82 char *newname, char *poolname,
83 int Slot, int relabel);
84 static bool try_autoload_device(JCR *jcr, int slot, const char *VolName);
85 static void send_dir_busy_message(BSOCK *dir, DEVICE *dev);
89 bool (*func)(JCR *jcr);
90 int monitoraccess; /* specify if monitors have access to this function */
94 * The following are the recognized commands from the Director.
96 static struct s_cmds cmds[] = {
97 {"JobId=", job_cmd, 0}, /* start Job */
98 {"autochanger", autochanger_cmd, 0},
99 {"bootstrap", bootstrap_cmd, 0},
100 {"cancel", cancel_cmd, 0},
101 {"label", label_cmd, 0}, /* label a tape */
102 {"mount", mount_cmd, 0},
103 {"readlabel", readlabel_cmd, 0},
104 {"release", release_cmd, 0},
105 {"relabel", relabel_cmd, 0}, /* relabel a tape */
106 {"setdebug=", setdebug_cmd, 0}, /* set debug level */
107 {"status", status_cmd, 1},
108 {".status", qstatus_cmd, 1},
109 {"unmount", unmount_cmd, 0},
110 {"use device=", use_cmd, 0},
112 {"query", query_cmd, 0},
113 {NULL, NULL} /* list terminator */
118 * Connection request. We accept connections either from the
119 * Director or a Client (File daemon).
121 * Note, we are running as a seperate thread of the Storage daemon.
122 * and it is because a Director has made a connection with
123 * us on the "Message" channel.
125 * Basic tasks done here:
126 * - Create a JCR record
127 * - If it was from the FD, call handle_filed_connection()
128 * - Authenticate the Director
129 * - We wait for a command
130 * - We execute the command
131 * - We continue or exit depending on the return status
133 void *handle_connection_request(void *arg)
135 BSOCK *bs = (BSOCK *)arg;
140 char name[MAX_NAME_LENGTH];
142 if (bnet_recv(bs) <= 0) {
143 Emsg0(M_ERROR, 0, _("Connection request failed.\n"));
149 * Do a sanity check on the message received
151 if (bs->msglen < 25 || bs->msglen > (int)sizeof(name)-25) {
152 Emsg1(M_ERROR, 0, _("Invalid connection. Len=%d\n"), bs->msglen);
157 * See if this is a File daemon connection. If so
160 Dmsg1(110, "Conn: %s", bs->msg);
161 if (sscanf(bs->msg, "Hello Start Job %127s", name) == 1) {
162 handle_filed_connection(bs, name);
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 /* 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);
195 for (i=0; cmds[i].cmd; i++) {
196 if (strncmp(cmds[i].cmd, bs->msg, strlen(cmds[i].cmd)) == 0) {
197 if ((!cmds[i].monitoraccess) && (jcr->director->monitor)) {
198 Dmsg1(100, "Command %s illegal.\n", cmds[i].cmd);
199 bnet_fsend(bs, illegal_cmd);
200 bnet_sig(bs, BNET_EOD);
203 Dmsg1(200, "Do command: %s\n", cmds[i].cmd);
204 if (!cmds[i].func(jcr)) { /* do command */
205 quit = true; /* error, get out */
206 Dmsg1(190, "Command %s requsts quit\n", cmds[i].cmd);
208 found = true; /* indicate command found */
212 if (!found) { /* command not found */
213 bnet_fsend(bs, derrmsg);
218 dequeue_messages(jcr); /* send any queued messages */
219 bnet_sig(bs, BNET_TERMINATE);
225 * Set debug level as requested by the Director
228 static bool setdebug_cmd(JCR *jcr)
230 BSOCK *dir = jcr->dir_bsock;
231 int level, trace_flag;
233 Dmsg1(10, "setdebug_cmd: %s", dir->msg);
234 if (sscanf(dir->msg, "setdebug=%d trace=%d", &level, &trace_flag) != 2 || level < 0) {
235 bnet_fsend(dir, "3991 Bad setdebug command: %s\n", dir->msg);
239 set_trace(trace_flag);
240 return bnet_fsend(dir, OKsetdebug, level);
247 static bool cancel_cmd(JCR *cjcr)
249 BSOCK *dir = cjcr->dir_bsock;
251 char Job[MAX_NAME_LENGTH];
254 if (sscanf(dir->msg, "cancel Job=%127s", Job) == 1) {
255 if (!(jcr=get_jcr_by_full_name(Job))) {
256 bnet_fsend(dir, _("3992 Job %s not found.\n"), Job);
259 oldStatus = jcr->JobStatus;
260 set_jcr_job_status(jcr, JS_Canceled);
261 if (!jcr->authenticated && oldStatus == JS_WaitFD) {
262 pthread_cond_signal(&jcr->job_start_wait); /* wake waiting thread */
265 if (jcr->file_bsock) {
266 bnet_sig(jcr->file_bsock, BNET_TERMINATE);
268 /* If thread waiting on mount, wake him */
269 if (jcr->dcr && jcr->dcr->dev &&
270 (jcr->dcr->dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
271 jcr->dcr->dev->dev_blocked == BST_UNMOUNTED ||
272 jcr->dcr->dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
273 pthread_cond_signal(&jcr->dcr->dev->wait_next_vol);
275 bnet_fsend(dir, _("3000 Job %s marked to be canceled.\n"), jcr->Job);
279 bnet_fsend(dir, _("3993 Error scanning cancel command.\n"));
281 bnet_sig(dir, BNET_EOD);
289 static bool label_cmd(JCR *jcr)
291 return do_label(jcr, 0);
294 static bool relabel_cmd(JCR *jcr)
296 return do_label(jcr, 1);
299 static bool do_label(JCR *jcr, int relabel)
301 POOLMEM *newname, *oldname, *poolname, *mtype;
303 BSOCK *dir = jcr->dir_bsock;
308 newname = get_memory(dir->msglen+1);
309 oldname = get_memory(dir->msglen+1);
310 poolname = get_memory(dir->msglen+1);
311 mtype = get_memory(dir->msglen+1);
313 if (sscanf(dir->msg, "relabel %127s OldName=%127s NewName=%127s PoolName=%127s MediaType=%127s Slot=%d",
314 dname.c_str(), oldname, newname, poolname, mtype, &slot) == 6) {
319 if (sscanf(dir->msg, "label %127s VolumeName=%127s PoolName=%127s MediaType=%127s Slot=%d",
320 dname.c_str(), newname, poolname, mtype, &slot) == 5) {
325 unbash_spaces(newname);
326 unbash_spaces(oldname);
327 unbash_spaces(poolname);
328 unbash_spaces(mtype);
329 dev = find_device(jcr, dname);
331 /******FIXME**** compare MediaTypes */
332 P(dev->mutex); /* Use P to avoid indefinite block */
333 if (!dev->is_open()) {
334 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
335 force_close_dev(dev);
336 /* Under certain "safe" conditions, we can steal the lock */
337 } else if (dev->dev_blocked &&
338 (dev->dev_blocked == BST_UNMOUNTED ||
339 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
340 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
341 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
342 } else if (dev->is_busy()) {
343 send_dir_busy_message(dir, dev);
344 } else { /* device not being used */
345 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
349 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), dname.c_str());
352 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
353 pm_strcpy(jcr->errmsg, dir->msg);
354 bnet_fsend(dir, _("3903 Error scanning label command: %s\n"), jcr->errmsg);
356 free_memory(oldname);
357 free_memory(newname);
358 free_memory(poolname);
360 bnet_sig(dir, BNET_EOD);
365 * Read the tape label and determine if we can safely
366 * label the tape (not a Bacula volume), then label it.
368 * Enter with the mutex set
370 static void label_volume_if_ok(JCR *jcr, DEVICE *dev, char *oldname,
371 char *newname, char *poolname,
372 int slot, int relabel)
374 BSOCK *dir = jcr->dir_bsock;
380 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
382 if (!try_autoload_device(jcr, slot, newname)) {
383 goto bail_out; /* error */
386 /* See what we have for a Volume */
388 label_status = read_dev_volume_label_guess(dcr, 1);
390 label_status = read_dev_volume_label(dcr);
393 switch(label_status) {
395 case VOL_VERSION_ERROR:
396 case VOL_LABEL_ERROR:
400 "3920 Cannot label Volume because it is already labeled: \"%s\"\n"),
401 dev->VolHdr.VolName);
404 /* Relabel request. If oldname matches, continue */
405 if (strcmp(oldname, dev->VolHdr.VolName) != 0) {
406 bnet_fsend(dir, _("3921 Wrong volume mounted.\n"));
409 if (dev->label_type != B_BACULA_LABEL) {
410 bnet_fsend(dir, _("3922 Cannot relabel an ANSI/IBM labeled Volume.\n"));
413 /* Fall through wanted! */
416 if (!write_new_volume_label_to_dev(dcr, newname, poolname)) {
417 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
420 bstrncpy(dcr->VolumeName, newname, sizeof(dcr->VolumeName));
421 /* The following 3000 OK label. string is scanned in ua_label.c */
422 bnet_fsend(dir, "3000 OK label. Volume=%s Device=%s\n",
423 newname, dev_name(dev));
426 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
429 bnet_fsend(dir, _("3913 Cannot label Volume. "
430 "Unknown status %d from read_volume_label()\n"), label_status);
435 give_back_device_lock(dev, &hold);
441 * Read the tape label
443 * Enter with the mutex set
445 static bool read_label(DCR *dcr)
449 BSOCK *dir = jcr->dir_bsock;
451 DEVICE *dev = dcr->dev;
453 steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
455 dcr->VolumeName[0] = 0;
456 dev->state &= ~ST_LABEL; /* force read of label */
457 switch (read_dev_volume_label(dcr)) {
459 bnet_fsend(dir, _("3001 Mounted Volume: %s\n"), dev->VolHdr.VolName);
463 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device \"%s\" because:\n%s"),
464 dev_name(dev), jcr->errmsg);
468 give_back_device_lock(dev, &hold);
472 static DEVICE *find_device(JCR *jcr, POOL_MEM &dname)
477 unbash_spaces(dname);
479 foreach_res(device, R_DEVICE) {
480 /* Find resource, and make sure we were able to open it */
481 if (strcmp(device->hdr.name, dname.c_str()) == 0 && device->dev) {
482 Dmsg1(20, "Found device %s\n", device->hdr.name);
489 * ****FIXME***** device->dev may not point to right device
490 * if there are multiple devices open
492 jcr->dcr = new_dcr(jcr, device->dev);
494 jcr->dcr->device = device;
495 return jcr->dcr->dev;
503 * Mount command from Director
505 static bool mount_cmd(JCR *jcr)
508 BSOCK *dir = jcr->dir_bsock;
512 if (sscanf(dir->msg, "mount %127s", dname.c_str()) == 1) {
513 dev = find_device(jcr, dname);
516 P(dev->mutex); /* Use P to avoid indefinite block */
517 switch (dev->dev_blocked) { /* device blocked? */
518 case BST_WAITING_FOR_SYSOP:
519 /* Someone is waiting, wake him */
520 Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
521 dev->dev_blocked = BST_MOUNT;
522 bnet_fsend(dir, "3001 OK mount. Device=%s\n", dev_name(dev));
523 pthread_cond_signal(&dev->wait_next_vol);
526 /* In both of these two cases, we (the user) unmounted the Volume */
527 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
529 /* We freed the device, so reopen it and wake any waiting threads */
530 if (open_dev(dev, NULL, OPEN_READ_WRITE) < 0) {
531 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
535 read_dev_volume_label(dcr);
536 if (dev->dev_blocked == BST_UNMOUNTED) {
537 /* We blocked the device, so unblock it */
538 Dmsg0(100, "Unmounted. Unblocking device\n");
539 read_label(dcr); /* this should not be necessary */
542 Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
543 dev->dev_blocked = BST_MOUNT;
545 if (dev->is_labeled()) {
546 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
547 dev_name(dev), dev->VolHdr.VolName);
549 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
550 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
553 pthread_cond_signal(&dev->wait_next_vol);
556 case BST_DOING_ACQUIRE:
557 bnet_fsend(dir, _("3001 Device %s is mounted; doing acquire.\n"),
561 case BST_WRITING_LABEL:
562 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"), dev_name(dev));
565 case BST_NOT_BLOCKED:
566 if (dev->is_open()) {
567 if (dev->is_labeled()) {
568 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
569 dev_name(dev), dev->VolHdr.VolName);
571 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
572 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
576 if (!dev_is_tape(dev)) {
577 bnet_fsend(dir, _("3906 cannot mount non-tape.\n"));
580 if (open_dev(dev, NULL, OPEN_READ_WRITE) < 0) {
581 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
586 if (dev->is_labeled()) {
587 bnet_fsend(dir, _("3001 Device %s is already mounted with Volume \"%s\"\n"),
588 dev_name(dev), dev->VolHdr.VolName);
590 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
591 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
598 bnet_fsend(dir, _("3905 Bizarre wait state %d\n"), dev->dev_blocked);
603 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), dname.c_str());
606 pm_strcpy(jcr->errmsg, dir->msg);
607 bnet_fsend(dir, _("3909 Error scanning mount command: %s\n"), jcr->errmsg);
609 bnet_sig(dir, BNET_EOD);
614 * unmount command from Director
616 static bool unmount_cmd(JCR *jcr)
619 BSOCK *dir = jcr->dir_bsock;
622 if (sscanf(dir->msg, "unmount %127s", dname.c_str()) == 1) {
623 dev = find_device(jcr, dname);
625 P(dev->mutex); /* Use P to avoid indefinite block */
626 if (!dev->is_open()) {
627 Dmsg0(90, "Device already unmounted\n");
628 bnet_fsend(dir, _("3901 Device \"%s\" is already unmounted.\n"), dev_name(dev));
630 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP) {
631 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
633 open_dev(dev, NULL, 0); /* fake open for close */
634 offline_or_rewind_dev(dev);
635 force_close_dev(dev);
636 dev->dev_blocked = BST_UNMOUNTED_WAITING_FOR_SYSOP;
637 bnet_fsend(dir, _("3001 Device \"%s\" unmounted.\n"), dev_name(dev));
639 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
640 bnet_fsend(dir, _("3902 Device \"%s\" is busy in acquire.\n"), dev_name(dev));
642 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
643 bnet_fsend(dir, _("3903 Device \"%s\" is being labeled.\n"), dev_name(dev));
645 } else if (dev->is_busy()) {
646 send_dir_busy_message(dir, dev);
647 } else { /* device not being used */
648 Dmsg0(90, "Device not in use, unmounting\n");
649 /* On FreeBSD, I am having ASSERT() failures in block_device()
650 * and I can only imagine that the thread id that we are
651 * leaving in no_wait_id is being re-used. So here,
652 * we simply do it by hand. Gross, but a solution.
654 /* block_device(dev, BST_UNMOUNTED); replace with 2 lines below */
655 dev->dev_blocked = BST_UNMOUNTED;
657 open_dev(dev, NULL, 0); /* fake open for close */
658 offline_or_rewind_dev(dev);
659 force_close_dev(dev);
660 bnet_fsend(dir, _("3002 Device %s unmounted.\n"), dev_name(dev));
664 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), dname.c_str());
667 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
668 pm_strcpy(jcr->errmsg, dir->msg);
669 bnet_fsend(dir, _("3907 Error scanning unmount command: %s\n"), jcr->errmsg);
671 bnet_sig(dir, BNET_EOD);
676 * Release command from Director. This rewinds the device and if
677 * configured does a offline and ensures that Bacula will
678 * re-read the label of the tape before continuing. This gives
679 * the operator the chance to change the tape anytime before the
682 static bool release_cmd(JCR *jcr)
685 BSOCK *dir = jcr->dir_bsock;
688 if (sscanf(dir->msg, "release %127s", dname.c_str()) == 1) {
689 dev = find_device(jcr, dname);
691 P(dev->mutex); /* Use P to avoid indefinite block */
692 if (!dev->is_open()) {
693 Dmsg0(90, "Device already released\n");
694 bnet_fsend(dir, _("3911 Device %s already released.\n"), dev_name(dev));
696 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
697 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP) {
698 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
700 bnet_fsend(dir, _("3912 Device %s waiting for mount.\n"), dev_name(dev));
702 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
703 bnet_fsend(dir, _("3913 Device %s is busy in acquire.\n"), dev_name(dev));
705 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
706 bnet_fsend(dir, _("3914 Device %s is being labeled.\n"), dev_name(dev));
708 } else if (dev->is_busy()) {
709 send_dir_busy_message(dir, dev);
710 } else { /* device not being used */
711 Dmsg0(90, "Device not in use, unmounting\n");
712 release_volume(jcr->dcr);
713 bnet_fsend(dir, _("3012 Device %s released.\n"), dev_name(dev));
717 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), dname.c_str());
720 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
721 pm_strcpy(jcr->errmsg, dir->msg);
722 bnet_fsend(dir, _("3917 Error scanning release command: %s\n"), jcr->errmsg);
724 bnet_sig(dir, BNET_EOD);
731 * Autochanger command from Director
733 static bool autochanger_cmd(JCR *jcr)
736 BSOCK *dir = jcr->dir_bsock;
740 if (sscanf(dir->msg, "autochanger list %127s ", dname.c_str()) == 1) {
741 dev = find_device(jcr, dname);
744 P(dev->mutex); /* Use P to avoid indefinite block */
745 if (!dev_is_tape(dev)) {
746 bnet_fsend(dir, _("3995 Device %s is not an autochanger.\n"), dev_name(dev));
747 } else if (!dev->is_open()) {
748 autochanger_list(dcr, dir);
749 /* Under certain "safe" conditions, we can steal the lock */
750 } else if (dev->dev_blocked &&
751 (dev->dev_blocked == BST_UNMOUNTED ||
752 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
753 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
754 autochanger_list(dcr, dir);
755 } else if (dev->is_busy()) {
756 send_dir_busy_message(dir, dev);
757 } else { /* device not being used */
758 autochanger_list(dcr, dir);
762 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), dname.c_str());
764 } else { /* error on scanf */
765 pm_strcpy(jcr->errmsg, dir->msg);
766 bnet_fsend(dir, _("3908 Error scanning autocharger list command: %s\n"),
769 bnet_sig(dir, BNET_EOD);
774 * Read and return the Volume label
776 static bool readlabel_cmd(JCR *jcr)
779 BSOCK *dir = jcr->dir_bsock;
783 if (sscanf(dir->msg, "readlabel %127s Slot=%d", dname.c_str(), &Slot) == 2) {
784 dev = find_device(jcr, dname);
786 P(dev->mutex); /* Use P to avoid indefinite block */
787 if (!dev->is_open()) {
788 read_volume_label(jcr, dev, Slot);
789 force_close_dev(dev);
790 /* Under certain "safe" conditions, we can steal the lock */
791 } else if (dev->dev_blocked &&
792 (dev->dev_blocked == BST_UNMOUNTED ||
793 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
794 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
795 read_volume_label(jcr, dev, Slot);
796 } else if (dev->is_busy()) {
797 send_dir_busy_message(dir, dev);
798 } else { /* device not being used */
799 read_volume_label(jcr, dev, Slot);
803 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), dname.c_str());
806 pm_strcpy(jcr->errmsg, dir->msg);
807 bnet_fsend(dir, _("3909 Error scanning readlabel command: %s\n"), jcr->errmsg);
809 bnet_sig(dir, BNET_EOD);
814 * Read the tape label
816 * Enter with the mutex set
818 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot)
820 BSOCK *dir = jcr->dir_bsock;
825 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
827 if (!try_autoload_device(jcr, Slot, "")) {
828 goto bail_out; /* error */
831 dev->state &= ~ST_LABEL; /* force read of label */
832 switch (read_dev_volume_label(dcr)) {
834 /* DO NOT add quotes around the Volume name. It is scanned in the DIR */
835 bnet_fsend(dir, _("3001 Volume=%s Slot=%d\n"), dev->VolHdr.VolName, Slot);
836 Dmsg1(100, "Volume: %s\n", dev->VolHdr.VolName);
839 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device \"%s\" because:\n%s"),
840 dev_name(dev), jcr->errmsg);
845 give_back_device_lock(dev, &hold);
849 static bool try_autoload_device(JCR *jcr, int slot, const char *VolName)
852 BSOCK *dir = jcr->dir_bsock;
853 DEVICE *dev = dcr->dev;
855 bstrncpy(dcr->VolumeName, VolName, sizeof(dcr->VolumeName));
856 dcr->VolCatInfo.Slot = slot;
857 dcr->VolCatInfo.InChanger = slot > 0;
858 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
862 /* Ensure that the device is open -- autoload_device() closes it */
863 for ( ; !dev->is_open(); ) {
864 if (open_dev(dev, dcr->VolumeName, OPEN_READ_WRITE) < 0) {
865 bnet_fsend(dir, _("3910 Unable to open device %s. ERR=%s\n"),
866 dev_name(dev), dev->strerror());
873 static void send_dir_busy_message(BSOCK *dir, DEVICE *dev)
875 if (dev->can_read()) {
876 bnet_fsend(dir, _("3911 Device \"%s\" is busy reading.\n"),
879 bnet_fsend(dir, _("3912 Device \"%s\" is busy with %d writer(s).\n"),
880 dev_name(dev), dev->num_writers);