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);
62 extern int status_cmd(JCR *sjcr);
64 /* Forward referenced functions */
65 static int label_cmd(JCR *jcr);
66 static int relabel_cmd(JCR *jcr);
67 static int release_cmd(JCR *jcr);
68 static int setdebug_cmd(JCR *jcr);
69 static int cancel_cmd(JCR *cjcr);
70 static int mount_cmd(JCR *jcr);
71 static int unmount_cmd(JCR *jcr);
72 static int autochanger_cmd(JCR *sjcr);
73 static int do_label(JCR *jcr, int relabel);
74 static void label_volume_if_ok(JCR *jcr, DEVICE *dev, char *oldname,
75 char *newname, char *poolname,
76 int Slot, int relabel);
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 {"release", release_cmd},
97 {NULL, NULL} /* list terminator */
102 * Connection request. We accept connections either from the
103 * Director or a Client.
105 * Note, we are running as a seperate thread of the Storage daemon.
106 * and it is because a Director has made a connection with
107 * us on the "Message" channel.
109 * Basic tasks done here:
110 * - Create a JCR record
111 * - Authenticate the Director
112 * - We wait for a command
113 * - We execute the command
114 * - We continue or exit depending on the return status
116 void *connection_request(void *arg)
118 BSOCK *bs = (BSOCK *)arg;
122 char name[MAX_NAME_LENGTH];
124 if (bnet_recv(bs) <= 0) {
125 Emsg0(M_ERROR, 0, _("Connection request failed.\n"));
130 * See if this is a File daemon connection
132 if (bs->msglen < 25 || bs->msglen > (int)sizeof(name)+25) {
133 Emsg1(M_ERROR, 0, _("Invalid Dir connection. Len=%d\n"), bs->msglen);
135 if (sscanf(bs->msg, "Hello Start Job %127s calling\n", name) == 1) {
136 handle_filed_connection(bs, name);
140 jcr = new_jcr(sizeof(JCR), stored_free_jcr); /* create Job Control Record */
141 jcr->dir_bsock = bs; /* save Director bsock */
142 jcr->dir_bsock->jcr = jcr;
144 Dmsg0(1000, "stored in start_job\n");
147 * Authenticate the Director
149 if (!authenticate_director(jcr)) {
150 Jmsg(jcr, M_FATAL, 0, _("Unable to authenticate Director\n"));
154 Dmsg0(90, "Message channel init completed.\n");
156 for (quit=0; !quit;) {
158 if ((bnet_stat = bnet_recv(bs)) <= 0) {
159 break; /* connection terminated */
161 Dmsg1(9, "<dird: %s\n", bs->msg);
163 for (i=0; cmds[i].cmd; i++) {
164 if (strncmp(cmds[i].cmd, bs->msg, strlen(cmds[i].cmd)) == 0) {
165 if (!cmds[i].func(jcr)) { /* do command */
166 quit = TRUE; /* error, get out */
167 Dmsg1(90, "Command %s requsts quit\n", cmds[i].cmd);
169 found = TRUE; /* indicate command found */
173 if (!found) { /* command not found */
174 bnet_fsend(bs, derrmsg);
179 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 pm_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 -- 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 pm_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 give_back_device_lock(dev, &hold);
427 * Read the tape label
429 * Enter with the mutex set
431 static int read_label(JCR *jcr, DEVICE *dev)
434 BSOCK *dir = jcr->dir_bsock;
438 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);
455 give_back_device_lock(dev, &hold);
460 * Mount command from Director
462 static int mount_cmd(JCR *jcr)
465 BSOCK *dir = jcr->dir_bsock;
470 dev_name = get_memory(dir->msglen+1);
471 if (sscanf(dir->msg, "mount %s", dev_name) == 1) {
472 unbash_spaces(dev_name);
475 while ((device=(DEVRES *)GetNextRes(R_DEVICE, (RES *)device))) {
476 /* Find resource, and make sure we were able to open it */
477 if (strcmp(device->hdr.name, dev_name) == 0 && device->dev) {
478 Dmsg1(20, "Found device %s\n", device->hdr.name);
485 jcr->device = device;
487 P(dev->mutex); /* Use P to avoid indefinite block */
488 switch (dev->dev_blocked) { /* device blocked? */
490 case BST_WAITING_FOR_SYSOP:
491 /* Someone is waiting, wake him */
492 Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
493 dev->dev_blocked = BST_MOUNT;
494 pthread_cond_signal(&dev->wait_next_vol);
495 bnet_fsend(dir, "3001 OK mount. Device=%s\n", dev->dev_name);
498 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
500 /* We freed the device, so reopen it and wake any waiting threads */
501 if (open_dev(dev, NULL, READ_WRITE) < 0) {
502 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
506 block = new_block(dev);
507 read_dev_volume_label(jcr, dev, block);
509 if (dev->dev_blocked == BST_UNMOUNTED) {
510 Dmsg0(100, "Unmounted. Unblocking device\n");
511 read_label(jcr, dev);
514 Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
515 dev->dev_blocked = BST_MOUNT;
516 pthread_cond_signal(&dev->wait_next_vol);
518 if (dev->state & ST_LABEL) {
519 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
520 dev->dev_name, dev->VolHdr.VolName);
522 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
523 "Try unmounting and remounting the Volume.\n"),
528 case BST_DOING_ACQUIRE:
529 bnet_fsend(dir, _("3001 Device %s is mounted; doing acquire.\n"),
533 case BST_WRITING_LABEL:
534 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"), dev->dev_name);
537 case BST_NOT_BLOCKED:
538 if (dev->state & ST_OPENED) {
539 if (dev->state & ST_LABEL) {
540 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
541 dev->dev_name, dev->VolHdr.VolName);
543 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
544 "Try unmounting and remounting the Volume.\n"),
548 if (!dev_is_tape(dev)) {
549 bnet_fsend(dir, _("3906 cannot mount non-tape.\n"));
552 if (open_dev(dev, NULL, READ_WRITE) < 0) {
553 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
557 read_label(jcr, dev);
558 if (dev->state & ST_LABEL) {
559 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
560 dev->dev_name, dev->VolHdr.VolName);
562 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
563 "Try unmounting and remounting the Volume.\n"),
570 bnet_fsend(dir, _("3905 Bizarre wait state %d\n"), dev->dev_blocked);
575 bnet_fsend(dir, _("3999 Device %s not found\n"), dev_name);
578 pm_strcpy(&jcr->errmsg, dir->msg);
579 bnet_fsend(dir, _("3906 Error scanning mount command: %s\n"), jcr->errmsg);
581 free_memory(dev_name);
582 bnet_sig(dir, BNET_EOD);
587 * unmount command from Director
589 static int unmount_cmd(JCR *jcr)
592 BSOCK *dir = jcr->dir_bsock;
597 dname = get_memory(dir->msglen+1);
598 if (sscanf(dir->msg, "unmount %s", dname) == 1) {
599 unbash_spaces(dname);
602 while ((device=(DEVRES *)GetNextRes(R_DEVICE, (RES *)device))) {
603 /* Find resource, and make sure we were able to open it */
604 if (strcmp(device->hdr.name, dname) == 0 && device->dev) {
605 Dmsg1(20, "Found device %s\n", device->hdr.name);
612 jcr->device = device;
614 P(dev->mutex); /* Use P to avoid indefinite block */
615 if (!(dev->state & ST_OPENED)) {
616 Dmsg0(90, "Device already unmounted\n");
617 bnet_fsend(dir, _("3901 Device %s is already unmounted.\n"), dev_name(dev));
619 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP) {
620 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
622 open_dev(dev, NULL, 0); /* fake open for close */
623 offline_or_rewind_dev(dev);
624 force_close_dev(dev);
625 dev->dev_blocked = BST_UNMOUNTED_WAITING_FOR_SYSOP;
626 bnet_fsend(dir, _("3001 Device %s unmounted.\n"), dev_name(dev));
628 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
629 bnet_fsend(dir, _("3902 Device %s is busy in acquire.\n"),
632 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
633 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
636 } else if (dev->state & ST_READ || dev->num_writers) {
637 if (dev->state & ST_READ) {
638 Dmsg0(90, "Device in read mode\n");
639 bnet_fsend(dir, _("3904 Device %s is busy with 1 reader.\n"),
642 Dmsg1(90, "Device busy with %d writers\n", dev->num_writers);
643 bnet_fsend(dir, _("3905 Device %s is busy with %d writer(s).\n"),
644 dev_name(dev), dev->num_writers);
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);
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);
672 bnet_sig(dir, BNET_EOD);
677 * Release command from Director. This rewinds the device and if
678 * configured does a offline and ensures that Bacula will
679 * re-read the label of the tape before continuing. This gives
680 * the operator the chance to change the tape anytime before the
683 static int release_cmd(JCR *jcr)
686 BSOCK *dir = jcr->dir_bsock;
691 dname = get_memory(dir->msglen+1);
692 if (sscanf(dir->msg, "release %s", dname) == 1) {
693 unbash_spaces(dname);
696 while ((device=(DEVRES *)GetNextRes(R_DEVICE, (RES *)device))) {
697 /* Find resource, and make sure we were able to open it */
698 if (strcmp(device->hdr.name, dname) == 0 && device->dev) {
699 Dmsg1(20, "Found device %s\n", device->hdr.name);
706 jcr->device = device;
708 P(dev->mutex); /* Use P to avoid indefinite block */
709 if (!(dev->state & ST_OPENED)) {
710 Dmsg0(90, "Device already released\n");
711 bnet_fsend(dir, _("3911 Device %s already released.\n"), dev_name(dev));
713 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
714 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP) {
715 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
717 bnet_fsend(dir, _("3912 Device %s waiting for mount.\n"), dev_name(dev));
719 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
720 bnet_fsend(dir, _("3913 Device %s is busy in acquire.\n"),
723 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
724 bnet_fsend(dir, _("3914 Device %s is being labeled.\n"),
727 } else if (dev->state & ST_READ || dev->num_writers) {
728 if (dev->state & ST_READ) {
729 Dmsg0(90, "Device in read mode\n");
730 bnet_fsend(dir, _("3915 Device %s is busy with 1 reader.\n"),
733 Dmsg1(90, "Device busy with %d writers\n", dev->num_writers);
734 bnet_fsend(dir, _("3916 Device %s is busy with %d writer(s).\n"),
735 dev_name(dev), dev->num_writers);
738 } else { /* device not being used */
739 Dmsg0(90, "Device not in use, unmounting\n");
740 release_volume(jcr, dev);
741 bnet_fsend(dir, _("3012 Device %s released.\n"), dev_name(dev));
745 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
748 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
749 pm_strcpy(&jcr->errmsg, dir->msg);
750 bnet_fsend(dir, _("3917 Error scanning release command: %s\n"), jcr->errmsg);
753 bnet_sig(dir, BNET_EOD);
760 * Autochanger command from Director
762 static int autochanger_cmd(JCR *jcr)
765 BSOCK *dir = jcr->dir_bsock;
770 devname = get_memory(dir->msglen+1);
771 if (sscanf(dir->msg, "autochanger list %s ", devname) == 1) {
772 unbash_spaces(devname);
775 while ((device=(DEVRES *)GetNextRes(R_DEVICE, (RES *)device))) {
776 /* Find resource, and make sure we were able to open it */
777 if (strcmp(device->hdr.name, devname) == 0 && device->dev) {
778 Dmsg1(20, "Found device %s\n", device->hdr.name);
785 jcr->device = device;
787 P(dev->mutex); /* Use P to avoid indefinite block */
788 if (!dev_is_tape(dev)) {
789 bnet_fsend(dir, _("3995 Device %s is not an autochanger.\n"),
791 } else if (!(dev->state & ST_OPENED)) {
792 if (open_dev(dev, NULL, READ_WRITE) < 0) {
793 bnet_fsend(dir, _("3994 Connot open device: %s\n"), strerror_dev(dev));
795 autochanger_list(jcr, dev, dir);
796 force_close_dev(dev);
798 /* Under certain "safe" conditions, we can steal the lock */
799 } else if (dev->dev_blocked &&
800 (dev->dev_blocked == BST_UNMOUNTED ||
801 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
802 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
803 autochanger_list(jcr, dev, dir);
804 } else if (dev->state & ST_READ || dev->num_writers) {
805 if (dev->state & ST_READ) {
806 bnet_fsend(dir, _("3901 Device %s is busy with 1 reader.\n"),
809 bnet_fsend(dir, _("3902 Device %s is busy with %d writer(s).\n"),
810 dev_name(dev), dev->num_writers);
812 } else { /* device not being used */
813 autochanger_list(jcr, dev, dir);
817 bnet_fsend(dir, _("3999 Device %s not found\n"), devname);
819 } else { /* error on scanf */
820 pm_strcpy(&jcr->errmsg, dir->msg);
821 bnet_fsend(dir, _("3907 Error scanning autocharger list command: %s\n"),
824 free_memory(devname);
825 bnet_sig(dir, BNET_EOD);