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) 2000-2004 Kern Sibbald and John Walker
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 status_cmd(JCR *sjcr);
63 extern bool qstatus_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 &dname);
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);
84 bool (*func)(JCR *jcr);
85 int monitoraccess; /* specify if monitors have access to this function */
89 * The following are the recognized commands from the Director.
91 static struct s_cmds cmds[] = {
92 {"JobId=", job_cmd, 0}, /* start Job */
93 {"autochanger", autochanger_cmd, 0},
94 {"bootstrap", bootstrap_cmd, 0},
95 {"cancel", cancel_cmd, 0},
96 {"label", label_cmd, 0}, /* label a tape */
97 {"mount", mount_cmd, 0},
98 {"readlabel", readlabel_cmd, 0},
99 {"release", release_cmd, 0},
100 {"relabel", relabel_cmd, 0}, /* relabel a tape */
101 {"setdebug=", setdebug_cmd, 0}, /* set debug level */
102 {"status", status_cmd, 1},
103 {".status", qstatus_cmd, 1},
104 {"unmount", unmount_cmd, 0},
105 {NULL, NULL} /* list terminator */
110 * Connection request. We accept connections either from the
111 * Director or a Client (File daemon).
113 * Note, we are running as a seperate thread of the Storage daemon.
114 * and it is because a Director has made a connection with
115 * us on the "Message" channel.
117 * Basic tasks done here:
118 * - Create a JCR record
119 * - If it was from the FD, call handle_filed_connection()
120 * - Authenticate the Director
121 * - We wait for a command
122 * - We execute the command
123 * - We continue or exit depending on the return status
125 void *handle_connection_request(void *arg)
127 BSOCK *bs = (BSOCK *)arg;
132 char name[MAX_NAME_LENGTH];
134 if (bnet_recv(bs) <= 0) {
135 Emsg0(M_ERROR, 0, _("Connection request failed.\n"));
141 * Do a sanity check on the message received
143 if (bs->msglen < 25 || bs->msglen > (int)sizeof(name)-25) {
144 Emsg1(M_ERROR, 0, _("Invalid connection. Len=%d\n"), bs->msglen);
149 * See if this is a File daemon connection. If so
152 Dmsg1(110, "Conn: %s", bs->msg);
153 if (sscanf(bs->msg, "Hello Start Job %127s", name) == 1) {
154 handle_filed_connection(bs, name);
158 Dmsg0(110, "Start Dir Job\n");
159 jcr = new_jcr(sizeof(JCR), stored_free_jcr); /* create Job Control Record */
160 jcr->dir_bsock = bs; /* save Director bsock */
161 jcr->dir_bsock->jcr = jcr;
162 /* Initialize FD start condition variable */
163 int errstat = pthread_cond_init(&jcr->job_start_wait, NULL);
165 Jmsg1(jcr, M_FATAL, 0, _("Unable to init job cond variable: ERR=%s\n"), strerror(errstat));
169 Dmsg0(1000, "stored in start_job\n");
172 * Authenticate the Director
174 if (!authenticate_director(jcr)) {
175 Jmsg(jcr, M_FATAL, 0, _("Unable to authenticate Director\n"));
178 Dmsg0(90, "Message channel init completed.\n");
180 for (quit=0; !quit;) {
182 if ((bnet_stat = bnet_recv(bs)) <= 0) {
183 break; /* connection terminated */
185 Dmsg1(9, "<dird: %s\n", bs->msg);
187 for (i=0; cmds[i].cmd; i++) {
188 if (strncmp(cmds[i].cmd, bs->msg, strlen(cmds[i].cmd)) == 0) {
189 if ((!cmds[i].monitoraccess) && (jcr->director->monitor)) {
190 Dmsg1(100, "Command %s illegal.\n", cmds[i].cmd);
191 bnet_fsend(bs, illegal_cmd);
192 bnet_sig(bs, BNET_EOD);
195 if (!cmds[i].func(jcr)) { /* do command */
196 quit = true; /* error, get out */
197 Dmsg1(90, "Command %s requsts quit\n", cmds[i].cmd);
199 found = true; /* indicate command found */
203 if (!found) { /* command not found */
204 bnet_fsend(bs, derrmsg);
209 dequeue_messages(jcr); /* send any queued messages */
210 bnet_sig(bs, BNET_TERMINATE);
216 * Set debug level as requested by the Director
219 static bool setdebug_cmd(JCR *jcr)
221 BSOCK *dir = jcr->dir_bsock;
222 int level, trace_flag;
224 Dmsg1(10, "setdebug_cmd: %s", dir->msg);
225 if (sscanf(dir->msg, "setdebug=%d trace=%d", &level, &trace_flag) != 2 || level < 0) {
226 bnet_fsend(dir, "3991 Bad setdebug command: %s\n", dir->msg);
230 set_trace(trace_flag);
231 return bnet_fsend(dir, OKsetdebug, level);
238 static bool cancel_cmd(JCR *cjcr)
240 BSOCK *dir = cjcr->dir_bsock;
242 char Job[MAX_NAME_LENGTH];
245 if (sscanf(dir->msg, "cancel Job=%127s", Job) == 1) {
246 if (!(jcr=get_jcr_by_full_name(Job))) {
247 bnet_fsend(dir, _("3992 Job %s not found.\n"), Job);
250 oldStatus = jcr->JobStatus;
251 set_jcr_job_status(jcr, JS_Canceled);
252 if (!jcr->authenticated && oldStatus == JS_WaitFD) {
253 pthread_cond_signal(&jcr->job_start_wait); /* wake waiting thread */
256 if (jcr->file_bsock) {
257 bnet_sig(jcr->file_bsock, BNET_TERMINATE);
259 /* If thread waiting on mount, wake him */
260 if (jcr->dcr && jcr->dcr->dev &&
261 (jcr->dcr->dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
262 jcr->dcr->dev->dev_blocked == BST_UNMOUNTED ||
263 jcr->dcr->dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
264 pthread_cond_signal(&jcr->dcr->dev->wait_next_vol);
266 bnet_fsend(dir, _("3000 Job %s marked to be canceled.\n"), jcr->Job);
270 bnet_fsend(dir, _("3993 Error scanning cancel command.\n"));
272 bnet_sig(dir, BNET_EOD);
280 static bool label_cmd(JCR *jcr)
282 return do_label(jcr, 0);
285 static bool relabel_cmd(JCR *jcr)
287 return do_label(jcr, 1);
290 static bool do_label(JCR *jcr, int relabel)
292 POOLMEM *newname, *oldname, *poolname, *mtype;
294 BSOCK *dir = jcr->dir_bsock;
299 newname = get_memory(dir->msglen+1);
300 oldname = get_memory(dir->msglen+1);
301 poolname = get_memory(dir->msglen+1);
302 mtype = get_memory(dir->msglen+1);
304 if (sscanf(dir->msg, "relabel %127s OldName=%127s NewName=%127s PoolName=127%s MediaType=%127s Slot=%d",
305 dname.c_str(), oldname, newname, poolname, mtype, &slot) == 6) {
310 if (sscanf(dir->msg, "label %127s VolumeName=%127s PoolName=%127s MediaType=%127s Slot=%d",
311 dname.c_str(), newname, poolname, mtype, &slot) == 5) {
316 unbash_spaces(newname);
317 unbash_spaces(oldname);
318 unbash_spaces(poolname);
319 unbash_spaces(mtype);
320 dev = find_device(jcr, dname);
322 /******FIXME**** compare MediaTypes */
323 P(dev->mutex); /* Use P to avoid indefinite block */
324 if (!(dev->state & ST_OPENED)) {
325 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
326 force_close_dev(dev);
327 /* Under certain "safe" conditions, we can steal the lock */
328 } else if (dev->dev_blocked &&
329 (dev->dev_blocked == BST_UNMOUNTED ||
330 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
331 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
332 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
333 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
334 if (dev_state(dev, ST_READ)) {
335 bnet_fsend(dir, _("3911 Device %s is busy with 1 reader.\n"),
338 bnet_fsend(dir, _("3912 Device %s is busy with %d writer(s).\n"),
339 dev_name(dev), dev->num_writers);
341 } else { /* device not being used */
342 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
346 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), dname.c_str());
349 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
350 pm_strcpy(jcr->errmsg, dir->msg);
351 bnet_fsend(dir, _("3903 Error scanning label command: %s\n"), jcr->errmsg);
353 free_memory(oldname);
354 free_memory(newname);
355 free_memory(poolname);
357 bnet_sig(dir, BNET_EOD);
362 * Read the tape label and determine if we can safely
363 * label the tape (not a Bacula volume), then label it.
365 * Enter with the mutex set
367 static void label_volume_if_ok(JCR *jcr, DEVICE *dev, char *oldname,
368 char *newname, char *poolname,
369 int slot, int relabel)
371 BSOCK *dir = jcr->dir_bsock;
376 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
378 bstrncpy(dcr->VolumeName, newname, sizeof(dcr->VolumeName));
379 dcr->VolCatInfo.Slot = slot;
380 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
384 /* Ensure that the device is open -- autoload_device() closes it */
385 for ( ; !(dev->state & ST_OPENED); ) {
386 if (open_dev(dev, dcr->VolumeName, OPEN_READ_WRITE) < 0) {
387 bnet_fsend(dir, _("3910 Unable to open device %s. ERR=%s\n"),
388 dev_name(dev), strerror_dev(dev));
393 /* See what we have for a Volume */
394 label_status = read_dev_volume_label(dcr);
395 switch(label_status) {
397 case VOL_VERSION_ERROR:
398 case VOL_LABEL_ERROR:
402 "3911 Cannot label Volume because it is already labeled: \"%s\"\n"),
403 dev->VolHdr.VolName);
406 /* Relabel request. If oldname matches, continue */
407 if (strcmp(oldname, dev->VolHdr.VolName) != 0) {
408 bnet_fsend(dir, _("Wrong volume mounted.\n"));
411 /* Fall through wanted! */
414 if (!write_new_volume_label_to_dev(dcr, newname, poolname)) {
415 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
418 bstrncpy(dcr->VolumeName, newname, sizeof(dcr->VolumeName));
419 /* The following 3000 OK label. string is scanned in ua_label.c */
420 bnet_fsend(dir, "3000 OK label. Volume=%s Device=%s\n",
421 newname, dev_name(dev));
424 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
427 bnet_fsend(dir, _("3913 Cannot label Volume. \
428 Unknown status %d from read_volume_label()\n"), label_status);
433 give_back_device_lock(dev, &hold);
439 * Read the tape label
441 * Enter with the mutex set
443 static bool read_label(DCR *dcr)
447 BSOCK *dir = jcr->dir_bsock;
449 DEVICE *dev = dcr->dev;
451 steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
453 dcr->VolumeName[0] = 0;
454 dev->state &= ~ST_LABEL; /* force read of label */
455 switch (read_dev_volume_label(dcr)) {
457 bnet_fsend(dir, _("3001 Mounted Volume: %s\n"), dev->VolHdr.VolName);
461 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device \"%s\" because:\n%s"),
462 dev_name(dev), jcr->errmsg);
466 give_back_device_lock(dev, &hold);
470 static DEVICE *find_device(JCR *jcr, POOL_MEM &dname)
475 unbash_spaces(dname);
477 foreach_res(device, R_DEVICE) {
478 /* Find resource, and make sure we were able to open it */
479 if (strcmp(device->hdr.name, dname.c_str()) == 0 && device->dev) {
480 Dmsg1(20, "Found device %s\n", device->hdr.name);
481 jcr->device = device;
488 * ****FIXME***** device->dev may not point to right device
489 * if there are multiple devices open
491 jcr->dcr = new_dcr(jcr, device->dev);
493 return jcr->dcr->dev;
501 * Mount command from Director
503 static bool mount_cmd(JCR *jcr)
506 BSOCK *dir = jcr->dir_bsock;
510 if (sscanf(dir->msg, "mount %127s", dname.c_str()) == 1) {
511 dev = find_device(jcr, dname);
514 P(dev->mutex); /* Use P to avoid indefinite block */
515 switch (dev->dev_blocked) { /* device blocked? */
516 case BST_WAITING_FOR_SYSOP:
517 /* Someone is waiting, wake him */
518 Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
519 dev->dev_blocked = BST_MOUNT;
520 bnet_fsend(dir, "3001 OK mount. Device=%s\n", dev_name(dev));
521 pthread_cond_signal(&dev->wait_next_vol);
524 /* In both of these two cases, we (the user) unmounted the Volume */
525 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
527 /* We freed the device, so reopen it and wake any waiting threads */
528 if (open_dev(dev, NULL, OPEN_READ_WRITE) < 0) {
529 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
533 read_dev_volume_label(dcr);
534 if (dev->dev_blocked == BST_UNMOUNTED) {
535 /* We blocked the device, so unblock it */
536 Dmsg0(100, "Unmounted. Unblocking device\n");
537 read_label(dcr); /* this should not be necessary */
540 Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
541 dev->dev_blocked = BST_MOUNT;
543 if (dev_state(dev, ST_LABEL)) {
544 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
545 dev_name(dev), dev->VolHdr.VolName);
547 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
548 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
551 pthread_cond_signal(&dev->wait_next_vol);
554 case BST_DOING_ACQUIRE:
555 bnet_fsend(dir, _("3001 Device %s is mounted; doing acquire.\n"),
559 case BST_WRITING_LABEL:
560 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"), dev_name(dev));
563 case BST_NOT_BLOCKED:
564 if (dev_state(dev, ST_OPENED)) {
565 if (dev_state(dev, ST_LABEL)) {
566 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
567 dev_name(dev), dev->VolHdr.VolName);
569 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
570 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
574 if (!dev_is_tape(dev)) {
575 bnet_fsend(dir, _("3906 cannot mount non-tape.\n"));
578 if (open_dev(dev, NULL, OPEN_READ_WRITE) < 0) {
579 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
584 if (dev_state(dev, ST_LABEL)) {
585 bnet_fsend(dir, _("3001 Device %s is already mounted with Volume \"%s\"\n"),
586 dev_name(dev), dev->VolHdr.VolName);
588 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
589 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
596 bnet_fsend(dir, _("3905 Bizarre wait state %d\n"), dev->dev_blocked);
601 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), dname.c_str());
604 pm_strcpy(jcr->errmsg, dir->msg);
605 bnet_fsend(dir, _("3909 Error scanning mount command: %s\n"), jcr->errmsg);
607 bnet_sig(dir, BNET_EOD);
612 * unmount command from Director
614 static bool unmount_cmd(JCR *jcr)
617 BSOCK *dir = jcr->dir_bsock;
620 if (sscanf(dir->msg, "unmount %127s", dname.c_str()) == 1) {
621 dev = find_device(jcr, dname);
623 P(dev->mutex); /* Use P to avoid indefinite block */
624 if (!(dev->state & ST_OPENED)) {
625 Dmsg0(90, "Device already unmounted\n");
626 bnet_fsend(dir, _("3901 Device \"%s\" is already unmounted.\n"), dev_name(dev));
628 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP) {
629 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
631 open_dev(dev, NULL, 0); /* fake open for close */
632 offline_or_rewind_dev(dev);
633 force_close_dev(dev);
634 dev->dev_blocked = BST_UNMOUNTED_WAITING_FOR_SYSOP;
635 bnet_fsend(dir, _("3001 Device \"%s\" unmounted.\n"), dev_name(dev));
637 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
638 bnet_fsend(dir, _("3902 Device \"%s\" is busy in acquire.\n"), dev_name(dev));
640 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
641 bnet_fsend(dir, _("3903 Device \"%s\" is being labeled.\n"), dev_name(dev));
643 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
644 if (dev_state(dev, ST_READ)) {
645 Dmsg0(90, "Device in read mode\n");
646 bnet_fsend(dir, _("3904 Device \"%s\" is busy reading.\n"), dev_name(dev));
648 Dmsg1(90, "Device busy with %d writers\n", dev->num_writers);
649 bnet_fsend(dir, _("3905 Device %s is busy with %d writer(s).\n"),
650 dev_name(dev), dev->num_writers);
653 } else { /* device not being used */
654 Dmsg0(90, "Device not in use, unmounting\n");
655 /* On FreeBSD, I am having ASSERT() failures in block_device()
656 * and I can only imagine that the thread id that we are
657 * leaving in no_wait_id is being re-used. So here,
658 * we simply do it by hand. Gross, but a solution.
660 /* block_device(dev, BST_UNMOUNTED); replace with 2 lines below */
661 dev->dev_blocked = BST_UNMOUNTED;
663 open_dev(dev, NULL, 0); /* fake open for close */
664 offline_or_rewind_dev(dev);
665 force_close_dev(dev);
666 bnet_fsend(dir, _("3002 Device %s unmounted.\n"), dev_name(dev));
670 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), dname.c_str());
673 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
674 pm_strcpy(jcr->errmsg, dir->msg);
675 bnet_fsend(dir, _("3907 Error scanning unmount command: %s\n"), jcr->errmsg);
677 bnet_sig(dir, BNET_EOD);
682 * Release command from Director. This rewinds the device and if
683 * configured does a offline and ensures that Bacula will
684 * re-read the label of the tape before continuing. This gives
685 * the operator the chance to change the tape anytime before the
688 static bool release_cmd(JCR *jcr)
691 BSOCK *dir = jcr->dir_bsock;
694 if (sscanf(dir->msg, "release %127s", dname.c_str()) == 1) {
695 dev = find_device(jcr, dname);
697 P(dev->mutex); /* Use P to avoid indefinite block */
698 if (!(dev->state & ST_OPENED)) {
699 Dmsg0(90, "Device already released\n");
700 bnet_fsend(dir, _("3911 Device %s already released.\n"), dev_name(dev));
702 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
703 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP) {
704 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
706 bnet_fsend(dir, _("3912 Device %s waiting for mount.\n"), dev_name(dev));
708 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
709 bnet_fsend(dir, _("3913 Device %s is busy in acquire.\n"), dev_name(dev));
711 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
712 bnet_fsend(dir, _("3914 Device %s is being labeled.\n"), dev_name(dev));
714 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
715 if (dev_state(dev, ST_READ)) {
716 Dmsg0(90, "Device in read mode\n");
717 bnet_fsend(dir, _("3915 Device %s is busy with 1 reader.\n"), dev_name(dev));
719 Dmsg1(90, "Device busy with %d writers\n", dev->num_writers);
720 bnet_fsend(dir, _("3916 Device %s is busy with %d writer(s).\n"),
721 dev_name(dev), dev->num_writers);
724 } else { /* device not being used */
725 Dmsg0(90, "Device not in use, unmounting\n");
726 release_volume(jcr->dcr);
727 bnet_fsend(dir, _("3012 Device %s released.\n"), dev_name(dev));
731 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), dname.c_str());
734 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
735 pm_strcpy(jcr->errmsg, dir->msg);
736 bnet_fsend(dir, _("3917 Error scanning release command: %s\n"), jcr->errmsg);
738 bnet_sig(dir, BNET_EOD);
745 * Autochanger command from Director
747 static bool autochanger_cmd(JCR *jcr)
750 BSOCK *dir = jcr->dir_bsock;
754 if (sscanf(dir->msg, "autochanger list %127s ", dname.c_str()) == 1) {
755 dev = find_device(jcr, dname);
758 P(dev->mutex); /* Use P to avoid indefinite block */
759 if (!dev_is_tape(dev)) {
760 bnet_fsend(dir, _("3995 Device %s is not an autochanger.\n"), dev_name(dev));
761 } else if (!(dev->state & ST_OPENED)) {
762 autochanger_list(dcr, dir);
763 /* Under certain "safe" conditions, we can steal the lock */
764 } else if (dev->dev_blocked &&
765 (dev->dev_blocked == BST_UNMOUNTED ||
766 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
767 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
768 autochanger_list(dcr, dir);
769 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
770 if (dev_state(dev, ST_READ)) {
771 bnet_fsend(dir, _("3901 Device %s is busy with 1 reader.\n"), dev_name(dev));
773 bnet_fsend(dir, _("3902 Device %s is busy with %d writer(s).\n"),
774 dev_name(dev), dev->num_writers);
776 } else { /* device not being used */
777 autochanger_list(dcr, dir);
781 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), dname.c_str());
783 } else { /* error on scanf */
784 pm_strcpy(jcr->errmsg, dir->msg);
785 bnet_fsend(dir, _("3908 Error scanning autocharger list command: %s\n"),
788 bnet_sig(dir, BNET_EOD);
793 * Read and return the Volume label
795 static bool readlabel_cmd(JCR *jcr)
798 BSOCK *dir = jcr->dir_bsock;
802 if (sscanf(dir->msg, "readlabel %127s Slot=%d", dname.c_str(), &Slot) == 2) {
803 dev = find_device(jcr, dname);
805 P(dev->mutex); /* Use P to avoid indefinite block */
806 if (!dev_state(dev, ST_OPENED)) {
807 read_volume_label(jcr, dev, Slot);
808 force_close_dev(dev);
809 /* Under certain "safe" conditions, we can steal the lock */
810 } else if (dev->dev_blocked &&
811 (dev->dev_blocked == BST_UNMOUNTED ||
812 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
813 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
814 read_volume_label(jcr, dev, Slot);
815 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
816 if (dev_state(dev, ST_READ)) {
817 bnet_fsend(dir, _("3911 Device %s is busy with 1 reader.\n"),
820 bnet_fsend(dir, _("3912 Device %s is busy with %d writer(s).\n"),
821 dev_name(dev), dev->num_writers);
823 } else { /* device not being used */
824 read_volume_label(jcr, dev, Slot);
828 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), dname.c_str());
831 pm_strcpy(jcr->errmsg, dir->msg);
832 bnet_fsend(dir, _("3909 Error scanning readlabel command: %s\n"), jcr->errmsg);
834 bnet_sig(dir, BNET_EOD);
839 * Read the tape label
841 * Enter with the mutex set
843 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot)
845 BSOCK *dir = jcr->dir_bsock;
849 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
851 dcr->VolumeName[0] = 0;
852 dcr->VolCatInfo.Slot = Slot;
853 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
857 /* Ensure that the device is open -- autoload_device() closes it */
858 for ( ; !dev_state(dev, ST_OPENED); ) {
859 if (open_dev(dev, dcr->VolumeName, OPEN_READ_WRITE) < 0) {
860 bnet_fsend(dir, _("3910 Unable to open device \"%s\". ERR=%s\n"),
861 dev_name(dev), strerror_dev(dev));
866 dev->state &= ~ST_LABEL; /* force read of label */
867 switch (read_dev_volume_label(dcr)) {
869 /* DO NOT add quotes around the Volume name. It is scanned in the DIR */
870 bnet_fsend(dir, _("3001 Volume=%s Slot=%d\n"), dev->VolHdr.VolName, Slot);
871 Dmsg1(100, "Volume: %s\n", dev->VolHdr.VolName);
874 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device \"%s\" because:\n%s"),
875 dev_name(dev), jcr->errmsg);
880 give_back_device_lock(dev, &hold);