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) 2000-2003 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";
59 /* Imported functions */
60 extern void terminate_child();
61 extern int job_cmd(JCR *jcr);
63 /* Forward referenced functions */
64 static int label_cmd(JCR *jcr);
65 static int relabel_cmd(JCR *jcr);
66 static int setdebug_cmd(JCR *jcr);
67 static int cancel_cmd(JCR *cjcr);
68 static int mount_cmd(JCR *jcr);
69 static int unmount_cmd(JCR *jcr);
70 static int status_cmd(JCR *sjcr);
71 static int autochanger_cmd(JCR *sjcr);
72 static int do_label(JCR *jcr, int relabel);
73 static void label_volume_if_ok(JCR *jcr, DEVICE *dev, char *oldname,
74 char *newname, char *poolname,
75 int Slot, int relabel);
76 static void send_blocked_status(JCR *jcr, DEVICE *dev);
80 int (*func)(JCR *jcr);
84 * The following are the recognized commands from the Director.
86 static struct s_cmds cmds[] = {
87 {"JobId=", job_cmd}, /* start Job */
88 {"setdebug=", setdebug_cmd}, /* set debug level */
89 {"cancel", cancel_cmd},
90 {"label", label_cmd}, /* label a tape */
91 {"relabel", relabel_cmd}, /* relabel a tape */
93 {"unmount", unmount_cmd},
94 {"status", status_cmd},
95 {"autochanger", autochanger_cmd},
96 {NULL, NULL} /* list terminator */
101 * Connection request. We accept connections either from the
102 * Director or a Client.
104 * Note, we are running as a seperate thread of the Storage daemon.
105 * and it is because a Director has made a connection with
106 * us on the "Message" channel.
108 * Basic tasks done here:
109 * - Create a JCR record
110 * - Authenticate the Director
111 * - We wait for a command
112 * - We execute the command
113 * - We continue or exit depending on the return status
115 void *connection_request(void *arg)
117 BSOCK *bs = (BSOCK *)arg;
121 char name[MAX_NAME_LENGTH];
123 if (bnet_recv(bs) <= 0) {
124 Emsg0(M_ERROR, 0, _("Connection request failed.\n"));
129 * See if this is a File daemon connection
131 if (bs->msglen < 25 || bs->msglen > (int)sizeof(name)+25) {
132 Emsg1(M_ERROR, 0, _("Invalid Dir connection. Len=%d\n"), bs->msglen);
134 if (sscanf(bs->msg, "Hello Start Job %127s calling\n", name) == 1) {
135 handle_filed_connection(bs, name);
139 jcr = new_jcr(sizeof(JCR), stored_free_jcr); /* create Job Control Record */
140 jcr->dir_bsock = bs; /* save Director bsock */
142 Dmsg0(1000, "stored in start_job\n");
145 * Authenticate the Director
147 if (!authenticate_director(jcr)) {
148 Jmsg(jcr, M_FATAL, 0, _("Unable to authenticate Director\n"));
152 Dmsg0(90, "Message channel init completed.\n");
154 for (quit=0; !quit;) {
156 if ((bnet_stat = bnet_recv(bs)) <= 0) {
157 break; /* connection terminated */
159 Dmsg1(9, "<dird: %s\n", bs->msg);
161 for (i=0; cmds[i].cmd; i++) {
162 if (strncmp(cmds[i].cmd, bs->msg, strlen(cmds[i].cmd)) == 0) {
163 if (!cmds[i].func(jcr)) { /* do command */
164 quit = TRUE; /* error, get out */
165 Dmsg1(90, "Command %s requsts quit\n", cmds[i].cmd);
167 found = TRUE; /* indicate command found */
171 if (!found) { /* command not found */
172 bnet_fsend(bs, derrmsg);
177 if (bnet_stat != BNET_TERMINATE) {
178 bnet_sig(bs, BNET_TERMINATE);
185 * Set debug level as requested by the Director
188 static int setdebug_cmd(JCR *jcr)
190 BSOCK *dir = jcr->dir_bsock;
193 Dmsg1(10, "setdebug_cmd: %s", dir->msg);
194 if (sscanf(dir->msg, "setdebug=%d", &level) != 1 || level < 0) {
195 bnet_fsend(dir, "3991 Bad setdebug command: %s\n", dir->msg);
199 return bnet_fsend(dir, OKsetdebug, level);
206 static int cancel_cmd(JCR *cjcr)
208 BSOCK *dir = cjcr->dir_bsock;
210 char Job[MAX_NAME_LENGTH];
213 if (sscanf(dir->msg, "cancel Job=%127s", Job) == 1) {
214 if (!(jcr=get_jcr_by_full_name(Job))) {
215 bnet_fsend(dir, _("3992 Job %s not found.\n"), Job);
218 oldStatus = jcr->JobStatus;
219 set_jcr_job_status(jcr, JS_Canceled);
220 if (!jcr->authenticated && oldStatus == JS_WaitFD) {
221 pthread_cond_signal(&jcr->job_start_wait); /* wake waiting thread */
224 if (jcr->file_bsock) {
225 bnet_sig(jcr->file_bsock, BNET_TERMINATE);
227 /* If thread waiting on mount, wake him */
228 if (jcr->device && jcr->device->dev &&
229 (jcr->device->dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
230 jcr->device->dev->dev_blocked == BST_UNMOUNTED ||
231 jcr->device->dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
232 pthread_cond_signal(&jcr->device->dev->wait_next_vol);
234 bnet_fsend(dir, _("3000 Job %s marked to be canceled.\n"), jcr->Job);
238 bnet_fsend(dir, _("3993 Error scanning cancel command.\n"));
240 bnet_sig(dir, BNET_EOD);
248 static int label_cmd(JCR *jcr)
250 return do_label(jcr, 0);
253 static int relabel_cmd(JCR *jcr)
255 return do_label(jcr, 1);
258 static int do_label(JCR *jcr, int relabel)
260 POOLMEM *dname, *newname, *oldname, *poolname, *mtype;
261 BSOCK *dir = jcr->dir_bsock;
264 int found = 0, ok = 0;
267 dname = get_memory(dir->msglen+1);
268 newname = get_memory(dir->msglen+1);
269 oldname = get_memory(dir->msglen+1);
270 poolname = get_memory(dir->msglen+1);
271 mtype = get_memory(dir->msglen+1);
273 if (sscanf(dir->msg, "relabel %s OldName=%s NewName=%s PoolName=%s MediaType=%s Slot=%d",
274 dname, oldname, newname, poolname, mtype, &slot) == 6) {
279 if (sscanf(dir->msg, "label %s VolumeName=%s PoolName=%s MediaType=%s Slot=%d",
280 dname, newname, poolname, mtype, &slot) == 5) {
285 unbash_spaces(dname);
286 unbash_spaces(newname);
287 unbash_spaces(oldname);
288 unbash_spaces(poolname);
289 unbash_spaces(mtype);
292 while ((device=(DEVRES *)GetNextRes(R_DEVICE, (RES *)device))) {
293 /* Find resource, and make sure we were able to open it */
294 if (strcmp(device->hdr.name, dname) == 0 && device->dev) {
295 Dmsg1(20, "Found device %s\n", device->hdr.name);
302 /******FIXME**** compare MediaTypes */
303 jcr->device = device;
306 P(dev->mutex); /* Use P to avoid indefinite block */
307 if (!(dev->state & ST_OPENED)) {
308 if (open_dev(dev, newname, READ_WRITE) < 0) {
309 bnet_fsend(dir, _("3994 Connot open device: %s\n"), strerror_dev(dev));
311 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
312 force_close_dev(dev);
314 /* Under certain "safe" conditions, we can steal the lock */
315 } else if (dev->dev_blocked &&
316 (dev->dev_blocked == BST_UNMOUNTED ||
317 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
318 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
319 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
320 } else if (dev->state & ST_READ || dev->num_writers) {
321 if (dev->state & ST_READ) {
322 bnet_fsend(dir, _("3901 Device %s is busy with 1 reader.\n"),
325 bnet_fsend(dir, _("3902 Device %s is busy with %d writer(s).\n"),
326 dev_name(dev), dev->num_writers);
328 } else { /* device not being used */
329 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
333 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
336 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
337 pm_strcpy(&jcr->errmsg, dir->msg);
338 bnet_fsend(dir, _("3903 Error scanning label command: %s\n"), jcr->errmsg);
341 free_memory(oldname);
342 free_memory(newname);
343 free_memory(poolname);
345 bnet_sig(dir, BNET_EOD);
350 * Read the tape label and determine if we can safely
351 * label the tape (not a Bacula volume), then label it.
353 * Enter with the mutex set
355 static void label_volume_if_ok(JCR *jcr, DEVICE *dev, char *oldname,
356 char *newname, char *poolname,
357 int slot, int relabel)
359 BSOCK *dir = jcr->dir_bsock;
363 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
365 strcpy(jcr->VolumeName, newname);
366 jcr->VolCatInfo.Slot = slot;
367 autoload_device(jcr, dev, 0, dir); /* autoload if possible */
368 block = new_block(dev);
370 /* Ensure that the device is open -- not autoload_device() closes it */
371 for ( ; !(dev->state & ST_OPENED); ) {
372 if (open_dev(dev, jcr->VolumeName, READ_WRITE) < 0) {
373 if (dev->dev_errno == EAGAIN || dev->dev_errno == EBUSY) {
376 bnet_fsend(dir, _("3910 Unable to open device %s. ERR=%s\n"),
377 dev_name(dev), strerror_dev(dev));
382 /* See what we have for a Volume */
383 switch (read_dev_volume_label(jcr, dev, block)) {
385 case VOL_VERSION_ERROR:
386 case VOL_LABEL_ERROR:
390 "3911 Cannot label Volume because it is already labeled: %s\n"),
391 dev->VolHdr.VolName);
394 /* Relabel request. If oldname matches, continue */
395 if (strcmp(oldname, dev->VolHdr.VolName) != 0) {
396 bnet_fsend(dir, _("Wrong volume mounted.\n"));
399 /* Fall through wanted! */
402 if (!write_volume_label_to_dev(jcr, jcr->device, newname, poolname)) {
403 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
406 strcpy(jcr->VolumeName, newname);
407 bnet_fsend(dir, _("3000 OK label. Volume=%s Device=%s\n"),
408 newname, dev->dev_name);
411 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
414 bnet_fsend(dir, _("3913 Cannot label Volume. \
415 Unknown status %d from read_volume_label()\n"), jcr->label_status);
420 return_device_lock(dev, &hold);
425 * Read the tape label
427 * Enter with the mutex set
429 static int read_label(JCR *jcr, DEVICE *dev)
432 BSOCK *dir = jcr->dir_bsock;
437 steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
440 jcr->VolumeName[0] = 0;
441 block = new_block(dev);
442 dev->state &= ~ST_LABEL; /* force read of label */
443 switch (read_dev_volume_label(jcr, dev, block)) {
445 bnet_fsend(dir, _("3001 Mounted Volume: %s\n"), dev->VolHdr.VolName);
449 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device \"%s\" because:\n%s\n"),
450 dev->dev_name, jcr->errmsg);
456 return_device_lock(dev, &hold);
462 * Mount command from Director
464 static int mount_cmd(JCR *jcr)
467 BSOCK *dir = jcr->dir_bsock;
472 dev_name = get_memory(dir->msglen+1);
473 if (sscanf(dir->msg, "mount %s", dev_name) == 1) {
474 unbash_spaces(dev_name);
477 while ((device=(DEVRES *)GetNextRes(R_DEVICE, (RES *)device))) {
478 /* Find resource, and make sure we were able to open it */
479 if (strcmp(device->hdr.name, dev_name) == 0 && device->dev) {
480 Dmsg1(20, "Found device %s\n", device->hdr.name);
487 jcr->device = device;
489 P(dev->mutex); /* Use P to avoid indefinite block */
490 switch (dev->dev_blocked) { /* device blocked? */
492 case BST_WAITING_FOR_SYSOP:
493 /* Someone is waiting, wake him */
494 Dmsg0(90, "Waiting for mount attempt to wake thread\n");
495 pthread_cond_signal(&dev->wait_next_vol);
496 bnet_fsend(dir, "3001 OK mount. Device=%s\n", dev->dev_name);
499 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
501 /* We freed the device, so reopen it and wake any waiting threads */
502 if (open_dev(dev, NULL, READ_WRITE) < 0) {
503 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
507 block = new_block(dev);
508 read_dev_volume_label(jcr, dev, block);
510 if (dev->dev_blocked == BST_UNMOUNTED) {
511 Dmsg0(90, "Unmounted unblocking device\n");
512 read_label(jcr, dev);
515 Dmsg0(90, "Unmounted waiting for mount attempt to wake thread\n");
516 dev->dev_blocked = BST_WAITING_FOR_SYSOP;
517 pthread_cond_signal(&dev->wait_next_vol);
519 if (dev->state & ST_LABEL) {
520 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
521 dev->dev_name, dev->VolHdr.VolName);
523 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
524 "Try unmounting and remounting the Volume.\n"),
529 case BST_DOING_ACQUIRE:
530 bnet_fsend(dir, _("3001 Device %s is mounted; doing acquire.\n"),
534 case BST_WRITING_LABEL:
535 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"), dev->dev_name);
538 case BST_NOT_BLOCKED:
539 if (dev->state & ST_OPENED) {
540 if (dev->state & ST_LABEL) {
541 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
542 dev->dev_name, dev->VolHdr.VolName);
544 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
545 "Try unmounting and remounting the Volume.\n"),
549 if (!dev_is_tape(dev)) {
550 bnet_fsend(dir, _("3906 cannot mount non-tape.\n"));
553 if (open_dev(dev, NULL, READ_WRITE) < 0) {
554 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
558 read_label(jcr, dev);
559 if (dev->state & ST_LABEL) {
560 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
561 dev->dev_name, dev->VolHdr.VolName);
563 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
564 "Try unmounting and remounting the Volume.\n"),
571 bnet_fsend(dir, _("3905 Bizarre wait state %d\n"), dev->dev_blocked);
576 bnet_fsend(dir, _("3999 Device %s not found\n"), dev_name);
579 pm_strcpy(&jcr->errmsg, dir->msg);
580 bnet_fsend(dir, _("3906 Error scanning mount command: %s\n"), jcr->errmsg);
582 free_memory(dev_name);
583 bnet_sig(dir, BNET_EOD);
588 * unmount command from Director
590 static int unmount_cmd(JCR *jcr)
593 BSOCK *dir = jcr->dir_bsock;
598 dname = get_memory(dir->msglen+1);
599 if (sscanf(dir->msg, "unmount %s", dname) == 1) {
600 unbash_spaces(dname);
603 while ((device=(DEVRES *)GetNextRes(R_DEVICE, (RES *)device))) {
604 /* Find resource, and make sure we were able to open it */
605 if (strcmp(device->hdr.name, dname) == 0 && device->dev) {
606 Dmsg1(20, "Found device %s\n", device->hdr.name);
613 jcr->device = device;
615 P(dev->mutex); /* Use P to avoid indefinite block */
616 if (!(dev->state & ST_OPENED)) {
617 Dmsg0(90, "Device already unmounted\n");
618 bnet_fsend(dir, _("3901 Device %s is already unmounted.\n"), dev_name(dev));
620 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP) {
621 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
623 if (dev_cap(dev, CAP_OFFLINEUNMOUNT)) {
626 force_close_dev(dev);
627 dev->dev_blocked = BST_UNMOUNTED_WAITING_FOR_SYSOP;
628 bnet_fsend(dir, _("3001 Device %s unmounted.\n"), dev_name(dev));
630 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
631 bnet_fsend(dir, _("3902 Device %s is busy in acquire.\n"),
634 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
635 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
638 } else if (dev->state & ST_READ || dev->num_writers) {
639 if (dev->state & ST_READ) {
640 Dmsg0(90, "Device in read mode\n");
641 bnet_fsend(dir, _("3904 Device %s is busy with 1 reader.\n"),
644 Dmsg1(90, "Device busy with %d writers\n", dev->num_writers);
645 bnet_fsend(dir, _("3905 Device %s is busy with %d writer(s).\n"),
646 dev_name(dev), dev->num_writers);
649 } else { /* device not being used */
650 Dmsg0(90, "Device not in use, unmounting\n");
651 block_device(dev, BST_UNMOUNTED);
652 if (dev_cap(dev, CAP_OFFLINEUNMOUNT)) {
655 force_close_dev(dev);
656 bnet_fsend(dir, _("3002 Device %s unmounted.\n"), dev_name(dev));
660 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
663 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
664 pm_strcpy(&jcr->errmsg, dir->msg);
665 bnet_fsend(dir, _("3907 Error scanning unmount command: %s\n"), jcr->errmsg);
668 bnet_sig(dir, BNET_EOD);
673 * Status command from Director
675 static int status_cmd(JCR *jcr)
679 int found, bps, sec, bpb;
680 BSOCK *user = jcr->dir_bsock;
681 char dt[MAX_TIME_LENGTH];
682 char b1[30], b2[30], b3[30];
684 bnet_fsend(user, "\n%s Version: " VERSION " (" BDATE ")\n", my_name);
685 bstrftime(dt, sizeof(dt), daemon_start_time);
686 bnet_fsend(user, _("Daemon started %s, %d Job%s run.\n"), dt, last_job.NumJobs,
687 last_job.NumJobs == 1 ? "" : "s");
688 if (last_job.NumJobs > 0) {
691 bstrftime(dt, sizeof(dt), last_job.end_time);
692 bnet_fsend(user, _("Last Job %s finished at %s\n"), last_job.Job, dt);
694 jobstatus_to_ascii(last_job.JobStatus, termstat, sizeof(termstat));
695 bnet_fsend(user, _(" Files=%s Bytes=%s Termination Status=%s\n"),
696 edit_uint64_with_commas(last_job.JobFiles, b1),
697 edit_uint64_with_commas(last_job.JobBytes, b2),
702 for (device=NULL; (device=(DEVRES *)GetNextRes(R_DEVICE, (RES *)device)); ) {
703 for (dev=device->dev; dev; dev=dev->next) {
704 if (dev->state & ST_OPENED) {
705 if (dev->state & ST_LABEL) {
706 bnet_fsend(user, _("Device %s is mounted with Volume \"%s\"\n"),
707 dev_name(dev), dev->VolHdr.VolName);
709 bnet_fsend(user, _("Device %s open but no Bacula volume is mounted.\n"), dev_name(dev));
711 send_blocked_status(jcr, dev);
712 bpb = dev->VolCatInfo.VolCatBlocks;
716 bpb = dev->VolCatInfo.VolCatBytes / bpb;
717 bnet_fsend(user, _(" Total Bytes=%s Blocks=%s Bytes/block=%s\n"),
718 edit_uint64_with_commas(dev->VolCatInfo.VolCatBytes, b1),
719 edit_uint64_with_commas(dev->VolCatInfo.VolCatBlocks, b2),
720 edit_uint64_with_commas(bpb, b3));
721 bnet_fsend(user, _(" Positioned at File=%s Block=%s\n"),
722 edit_uint64_with_commas(dev->file, b1),
723 edit_uint64_with_commas(dev->block_num, b2));
726 bnet_fsend(user, _("Device %s is not open.\n"), dev_name(dev));
727 send_blocked_status(jcr, dev);
735 /* NOTE, we reuse a calling argument jcr. Be warned! */
736 for (jcr=NULL; (jcr=get_next_jcr(jcr)); ) {
737 if (jcr->JobStatus == JS_WaitFD) {
738 bnet_fsend(user, _("%s Job %s waiting for Client connection.\n"),
739 job_type_to_str(jcr->JobType), jcr->Job);
742 bnet_fsend(user, _("%s %s job %s is using device %s volume %s\n"),
743 job_level_to_str(jcr->JobLevel),
744 job_type_to_str(jcr->JobType),
745 jcr->Job, jcr->device->device_name,
747 sec = time(NULL) - jcr->run_time;
751 bps = jcr->JobBytes / sec;
752 bnet_fsend(user, _(" Files=%s Bytes=%s Bytes/sec=%s\n"),
753 edit_uint64_with_commas(jcr->JobFiles, b1),
754 edit_uint64_with_commas(jcr->JobBytes, b2),
755 edit_uint64_with_commas(bps, b3));
758 if (jcr->file_bsock) {
759 bnet_fsend(user, " FDReadSeqNo=%" lld " fd=%d\n",
760 jcr->file_bsock->read_seqno, jcr->file_bsock->fd);
762 bnet_fsend(user, " FDSocket closed\n");
766 free_locked_jcr(jcr);
770 bnet_fsend(user, _("No jobs running.\n"));
774 bnet_fsend(user, "\n\n");
775 dump_resource(R_DEVICE, resources[R_DEVICE-r_first].res_head, sendit, user);
777 bnet_fsend(user, "====\n");
779 bnet_sig(user, BNET_EOD);
783 static void send_blocked_status(JCR *jcr, DEVICE *dev)
785 BSOCK *user = jcr->dir_bsock;
787 switch (dev->dev_blocked) {
789 bnet_fsend(user, _(" Device is BLOCKED. User unmounted.\n"));
791 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
792 bnet_fsend(user, _(" Device is BLOCKED. User unmounted during wait for media/mount.\n"));
794 case BST_WAITING_FOR_SYSOP:
795 if (jcr->JobStatus == JS_WaitMount) {
796 bnet_fsend(user, _(" Device is BLOCKED waiting for mount.\n"));
798 bnet_fsend(user, _(" Device is BLOCKED waiting for appendable media.\n"));
801 case BST_DOING_ACQUIRE:
802 bnet_fsend(user, _(" Device is being initialized.\n"));
804 case BST_WRITING_LABEL:
805 bnet_fsend(user, _(" Device is blocked labeling a Volume.\n"));
813 * Autochanger command from Director
815 static int autochanger_cmd(JCR *jcr)
818 BSOCK *dir = jcr->dir_bsock;
823 devname = get_memory(dir->msglen+1);
824 if (sscanf(dir->msg, "autochanger list %s ", devname) == 1) {
825 unbash_spaces(devname);
828 while ((device=(DEVRES *)GetNextRes(R_DEVICE, (RES *)device))) {
829 /* Find resource, and make sure we were able to open it */
830 if (strcmp(device->hdr.name, devname) == 0 && device->dev) {
831 Dmsg1(20, "Found device %s\n", device->hdr.name);
838 jcr->device = device;
840 P(dev->mutex); /* Use P to avoid indefinite block */
841 if (!(dev->state & ST_OPENED)) {
842 if (open_dev(dev, NULL, READ_WRITE) < 0) {
843 bnet_fsend(dir, _("3994 Connot open device: %s\n"), strerror_dev(dev));
845 autochanger_list(jcr, dev, dir);
846 force_close_dev(dev);
848 /* Under certain "safe" conditions, we can steal the lock */
849 } else if (dev->dev_blocked &&
850 (dev->dev_blocked == BST_UNMOUNTED ||
851 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
852 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
853 autochanger_list(jcr, dev, dir);
854 } else if (dev->state & ST_READ || dev->num_writers) {
855 if (dev->state & ST_READ) {
856 bnet_fsend(dir, _("3901 Device %s is busy with 1 reader.\n"),
859 bnet_fsend(dir, _("3902 Device %s is busy with %d writer(s).\n"),
860 dev_name(dev), dev->num_writers);
862 } else { /* device not being used */
863 autochanger_list(jcr, dev, dir);
867 bnet_fsend(dir, _("3999 Device %s not found\n"), devname);
870 pm_strcpy(&jcr->errmsg, dir->msg);
871 bnet_fsend(dir, _("3907 Error scanning autocharger list command: %s\n"),
874 free_memory(devname);
875 bnet_sig(dir, BNET_EOD);