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";
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 readlabel_cmd(JCR *jcr);
68 static int release_cmd(JCR *jcr);
69 static int setdebug_cmd(JCR *jcr);
70 static int cancel_cmd(JCR *cjcr);
71 static int mount_cmd(JCR *jcr);
72 static int unmount_cmd(JCR *jcr);
73 static int autochanger_cmd(JCR *sjcr);
74 static int do_label(JCR *jcr, int relabel);
75 static bool find_device(JCR *jcr, char *dname);
76 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot);
77 static void label_volume_if_ok(JCR *jcr, DEVICE *dev, char *oldname,
78 char *newname, char *poolname,
79 int Slot, int relabel);
83 int (*func)(JCR *jcr);
87 * The following are the recognized commands from the Director.
89 static struct s_cmds cmds[] = {
90 {"JobId=", job_cmd}, /* start Job */
91 {"setdebug=", setdebug_cmd}, /* set debug level */
92 {"cancel", cancel_cmd},
93 {"label", label_cmd}, /* label a tape */
94 {"relabel", relabel_cmd}, /* relabel a tape */
96 {"unmount", unmount_cmd},
97 {"status", status_cmd},
98 {"autochanger", autochanger_cmd},
99 {"release", release_cmd},
100 {"readlabel", readlabel_cmd},
101 {NULL, NULL} /* list terminator */
106 * Connection request. We accept connections either from the
107 * Director or a Client (File daemon).
109 * Note, we are running as a seperate thread of the Storage daemon.
110 * and it is because a Director has made a connection with
111 * us on the "Message" channel.
113 * Basic tasks done here:
114 * - Create a JCR record
115 * - If it was from the FD, call handle_filed_connection()
116 * - Authenticate the Director
117 * - We wait for a command
118 * - We execute the command
119 * - We continue or exit depending on the return status
121 void *connection_request(void *arg)
123 BSOCK *bs = (BSOCK *)arg;
128 char name[MAX_NAME_LENGTH];
130 if (bnet_recv(bs) <= 0) {
131 Emsg0(M_ERROR, 0, _("Connection request failed.\n"));
136 * Do a sanity check on the message received
138 if (bs->msglen < 25 || bs->msglen > (int)sizeof(name)-25) {
139 Emsg1(M_ERROR, 0, _("Invalid Dir connection. Len=%d\n"), bs->msglen);
142 * See if this is a File daemon connection. If so
145 Dmsg1(110, "Conn: %s", bs->msg);
146 if (sscanf(bs->msg, "Hello Start Job %127s", name) == 1) {
147 handle_filed_connection(bs, name);
151 Dmsg0(110, "Start Dir Job\n");
152 jcr = new_jcr(sizeof(JCR), stored_free_jcr); /* create Job Control Record */
153 jcr->dir_bsock = bs; /* save Director bsock */
154 jcr->dir_bsock->jcr = jcr;
156 Dmsg0(1000, "stored in start_job\n");
159 * Authenticate the Director
161 if (!authenticate_director(jcr)) {
162 Jmsg(jcr, M_FATAL, 0, _("Unable to authenticate Director\n"));
166 Dmsg0(90, "Message channel init completed.\n");
168 for (quit=0; !quit;) {
170 if ((bnet_stat = bnet_recv(bs)) <= 0) {
171 break; /* connection terminated */
173 Dmsg1(9, "<dird: %s\n", bs->msg);
175 for (i=0; cmds[i].cmd; i++) {
176 if (strncmp(cmds[i].cmd, bs->msg, strlen(cmds[i].cmd)) == 0) {
177 if (!cmds[i].func(jcr)) { /* do command */
178 quit = true; /* error, get out */
179 Dmsg1(90, "Command %s requsts quit\n", cmds[i].cmd);
181 found = true; /* indicate command found */
185 if (!found) { /* command not found */
186 bnet_fsend(bs, derrmsg);
191 bnet_sig(bs, BNET_TERMINATE);
197 * Set debug level as requested by the Director
200 static int setdebug_cmd(JCR *jcr)
202 BSOCK *dir = jcr->dir_bsock;
203 int level, trace_flag;
205 Dmsg1(10, "setdebug_cmd: %s", dir->msg);
206 if (sscanf(dir->msg, "setdebug=%d trace=%d", &level, &trace_flag) != 2 || level < 0) {
207 bnet_fsend(dir, "3991 Bad setdebug command: %s\n", dir->msg);
211 set_trace(trace_flag);
212 return bnet_fsend(dir, OKsetdebug, level);
219 static int cancel_cmd(JCR *cjcr)
221 BSOCK *dir = cjcr->dir_bsock;
223 char Job[MAX_NAME_LENGTH];
226 if (sscanf(dir->msg, "cancel Job=%127s", Job) == 1) {
227 if (!(jcr=get_jcr_by_full_name(Job))) {
228 bnet_fsend(dir, _("3992 Job %s not found.\n"), Job);
231 oldStatus = jcr->JobStatus;
232 set_jcr_job_status(jcr, JS_Canceled);
233 if (!jcr->authenticated && oldStatus == JS_WaitFD) {
234 pthread_cond_signal(&jcr->job_start_wait); /* wake waiting thread */
237 if (jcr->file_bsock) {
238 bnet_sig(jcr->file_bsock, BNET_TERMINATE);
240 /* If thread waiting on mount, wake him */
241 if (jcr->device && jcr->device->dev &&
242 (jcr->device->dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
243 jcr->device->dev->dev_blocked == BST_UNMOUNTED ||
244 jcr->device->dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
245 pthread_cond_signal(&jcr->device->dev->wait_next_vol);
247 bnet_fsend(dir, _("3000 Job %s marked to be canceled.\n"), jcr->Job);
251 bnet_fsend(dir, _("3993 Error scanning cancel command.\n"));
253 bnet_sig(dir, BNET_EOD);
261 static int label_cmd(JCR *jcr)
263 return do_label(jcr, 0);
266 static int relabel_cmd(JCR *jcr)
268 return do_label(jcr, 1);
271 static int do_label(JCR *jcr, int relabel)
273 POOLMEM *dname, *newname, *oldname, *poolname, *mtype;
274 BSOCK *dir = jcr->dir_bsock;
279 dname = get_memory(dir->msglen+1);
280 newname = get_memory(dir->msglen+1);
281 oldname = get_memory(dir->msglen+1);
282 poolname = get_memory(dir->msglen+1);
283 mtype = get_memory(dir->msglen+1);
285 if (sscanf(dir->msg, "relabel %s OldName=%s NewName=%s PoolName=%s MediaType=%s Slot=%d",
286 dname, oldname, newname, poolname, mtype, &slot) == 6) {
291 if (sscanf(dir->msg, "label %s VolumeName=%s PoolName=%s MediaType=%s Slot=%d",
292 dname, newname, poolname, mtype, &slot) == 5) {
297 unbash_spaces(newname);
298 unbash_spaces(oldname);
299 unbash_spaces(poolname);
300 unbash_spaces(mtype);
301 if (find_device(jcr, dname)) {
302 /******FIXME**** compare MediaTypes */
303 dev = jcr->device->dev;
305 P(dev->mutex); /* Use P to avoid indefinite block */
306 if (!(dev->state & ST_OPENED)) {
307 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
308 force_close_dev(dev);
309 /* Under certain "safe" conditions, we can steal the lock */
310 } else if (dev->dev_blocked &&
311 (dev->dev_blocked == BST_UNMOUNTED ||
312 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
313 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
314 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
315 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
316 if (dev_state(dev, ST_READ)) {
317 bnet_fsend(dir, _("3911 Device %s is busy with 1 reader.\n"),
320 bnet_fsend(dir, _("3912 Device %s is busy with %d writer(s).\n"),
321 dev_name(dev), dev->num_writers);
323 } else { /* device not being used */
324 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
328 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
331 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
332 pm_strcpy(&jcr->errmsg, dir->msg);
333 bnet_fsend(dir, _("3903 Error scanning label command: %s\n"), jcr->errmsg);
336 free_memory(oldname);
337 free_memory(newname);
338 free_memory(poolname);
340 bnet_sig(dir, BNET_EOD);
345 * Read the tape label and determine if we can safely
346 * label the tape (not a Bacula volume), then label it.
348 * Enter with the mutex set
350 static void label_volume_if_ok(JCR *jcr, DEVICE *dev, char *oldname,
351 char *newname, char *poolname,
352 int slot, int relabel)
354 BSOCK *dir = jcr->dir_bsock;
358 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
359 block = new_block(dev);
361 pm_strcpy(&jcr->VolumeName, newname);
362 jcr->VolCatInfo.Slot = slot;
363 if (autoload_device(jcr, dev, 0, dir) < 0) { /* autoload if possible */
367 /* Ensure that the device is open -- autoload_device() closes it */
368 for ( ; !(dev->state & ST_OPENED); ) {
369 if (open_dev(dev, jcr->VolumeName, OPEN_READ_WRITE) < 0) {
370 bnet_fsend(dir, _("3910 Unable to open device %s. ERR=%s\n"),
371 dev_name(dev), strerror_dev(dev));
376 /* See what we have for a Volume */
377 switch (read_dev_volume_label(jcr, dev, block)) {
379 case VOL_VERSION_ERROR:
380 case VOL_LABEL_ERROR:
384 "3911 Cannot label Volume because it is already labeled: \"%s\"\n"),
385 dev->VolHdr.VolName);
388 /* Relabel request. If oldname matches, continue */
389 if (strcmp(oldname, dev->VolHdr.VolName) != 0) {
390 bnet_fsend(dir, _("Wrong volume mounted.\n"));
393 /* Fall through wanted! */
396 if (!write_volume_label_to_dev(jcr, jcr->device, newname, poolname)) {
397 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
400 pm_strcpy(&jcr->VolumeName, newname);
401 bnet_fsend(dir, _("3000 OK label. Volume=%s Device=%s\n"),
402 newname, dev_name(dev));
405 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
408 bnet_fsend(dir, _("3913 Cannot label Volume. \
409 Unknown status %d from read_volume_label()\n"), jcr->label_status);
414 give_back_device_lock(dev, &hold);
421 * Read the tape label
423 * Enter with the mutex set
425 static int read_label(JCR *jcr, DEVICE *dev)
428 BSOCK *dir = jcr->dir_bsock;
432 steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
434 jcr->VolumeName[0] = 0;
435 block = new_block(dev);
436 dev->state &= ~ST_LABEL; /* force read of label */
437 switch (read_dev_volume_label(jcr, dev, block)) {
439 bnet_fsend(dir, _("3001 Mounted Volume: %s\n"), dev->VolHdr.VolName);
443 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device \"%s\" because:\n%s"),
444 dev_name(dev), jcr->errmsg);
449 give_back_device_lock(dev, &hold);
453 static bool find_device(JCR *jcr, char *dname)
455 DEVRES *device = NULL;
458 unbash_spaces(dname);
460 while ((device=(DEVRES *)GetNextRes(R_DEVICE, (RES *)device))) {
461 /* Find resource, and make sure we were able to open it */
462 if (strcmp(device->hdr.name, dname) == 0 && device->dev) {
463 Dmsg1(20, "Found device %s\n", device->hdr.name);
464 jcr->device = device;
470 jcr->dcr = new_dcr(jcr, device->dev);
478 * Mount command from Director
480 static int mount_cmd(JCR *jcr)
483 BSOCK *dir = jcr->dir_bsock;
486 dname = get_memory(dir->msglen+1);
487 if (sscanf(dir->msg, "mount %s", dname) == 1) {
488 if (find_device(jcr, dname)) {
490 dev = jcr->device->dev;
491 P(dev->mutex); /* Use P to avoid indefinite block */
492 switch (dev->dev_blocked) { /* device blocked? */
493 case BST_WAITING_FOR_SYSOP:
494 /* Someone is waiting, wake him */
495 Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
496 dev->dev_blocked = BST_MOUNT;
497 bnet_fsend(dir, "3001 OK mount. Device=%s\n", dev_name(dev));
498 pthread_cond_signal(&dev->wait_next_vol);
501 /* In both of these two cases, we (the user) unmounted the Volume */
502 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
504 /* We freed the device, so reopen it and wake any waiting threads */
505 if (open_dev(dev, NULL, OPEN_READ_WRITE) < 0) {
506 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
510 block = new_block(dev);
511 read_dev_volume_label(jcr, dev, block);
513 if (dev->dev_blocked == BST_UNMOUNTED) {
514 /* We blocked the device, so unblock it */
515 Dmsg0(100, "Unmounted. Unblocking device\n");
516 read_label(jcr, dev); /* this should not be necessary */
519 Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
520 dev->dev_blocked = BST_MOUNT;
522 if (dev_state(dev, ST_LABEL)) {
523 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
524 dev_name(dev), dev->VolHdr.VolName);
526 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
527 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
530 pthread_cond_signal(&dev->wait_next_vol);
533 case BST_DOING_ACQUIRE:
534 bnet_fsend(dir, _("3001 Device %s is mounted; doing acquire.\n"),
538 case BST_WRITING_LABEL:
539 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"), dev_name(dev));
542 case BST_NOT_BLOCKED:
543 if (dev_state(dev, ST_OPENED)) {
544 if (dev_state(dev, ST_LABEL)) {
545 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
546 dev_name(dev), dev->VolHdr.VolName);
548 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
549 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
553 if (!dev_is_tape(dev)) {
554 bnet_fsend(dir, _("3906 cannot mount non-tape.\n"));
557 if (open_dev(dev, NULL, OPEN_READ_WRITE) < 0) {
558 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
562 read_label(jcr, dev);
563 if (dev_state(dev, ST_LABEL)) {
564 bnet_fsend(dir, _("3001 Device %s is already mounted with Volume \"%s\"\n"),
565 dev_name(dev), dev->VolHdr.VolName);
567 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
568 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
575 bnet_fsend(dir, _("3905 Bizarre wait state %d\n"), dev->dev_blocked);
580 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
583 pm_strcpy(&jcr->errmsg, dir->msg);
584 bnet_fsend(dir, _("3909 Error scanning mount command: %s\n"), jcr->errmsg);
587 bnet_sig(dir, BNET_EOD);
592 * unmount command from Director
594 static int unmount_cmd(JCR *jcr)
597 BSOCK *dir = jcr->dir_bsock;
600 dname = get_memory(dir->msglen+1);
601 if (sscanf(dir->msg, "unmount %s", dname) == 1) {
602 if (find_device(jcr, dname)) {
603 dev = jcr->device->dev;
604 P(dev->mutex); /* Use P to avoid indefinite block */
605 if (!(dev->state & ST_OPENED)) {
606 Dmsg0(90, "Device already unmounted\n");
607 bnet_fsend(dir, _("3901 Device \"%s\" is already unmounted.\n"), dev_name(dev));
609 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP) {
610 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
612 open_dev(dev, NULL, 0); /* fake open for close */
613 offline_or_rewind_dev(dev);
614 force_close_dev(dev);
615 dev->dev_blocked = BST_UNMOUNTED_WAITING_FOR_SYSOP;
616 bnet_fsend(dir, _("3001 Device \"%s\" unmounted.\n"), dev_name(dev));
618 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
619 bnet_fsend(dir, _("3902 Device \"%s\" is busy in acquire.\n"), dev_name(dev));
621 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
622 bnet_fsend(dir, _("3903 Device \"%s\" is being labeled.\n"), dev_name(dev));
624 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
625 if (dev_state(dev, ST_READ)) {
626 Dmsg0(90, "Device in read mode\n");
627 bnet_fsend(dir, _("3904 Device \"%s\" is busy reading.\n"), dev_name(dev));
629 Dmsg1(90, "Device busy with %d writers\n", dev->num_writers);
630 bnet_fsend(dir, _("3905 Device %s is busy with %d writer(s).\n"),
631 dev_name(dev), dev->num_writers);
634 } else { /* device not being used */
635 Dmsg0(90, "Device not in use, unmounting\n");
636 /* On FreeBSD, I am having ASSERT() failures in block_device()
637 * and I can only imagine that the thread id that we are
638 * leaving in no_wait_id is being re-used. So here,
639 * we simply do it by hand. Gross, but a solution.
641 /* block_device(dev, BST_UNMOUNTED); replace with 2 lines below */
642 dev->dev_blocked = BST_UNMOUNTED;
644 open_dev(dev, NULL, 0); /* fake open for close */
645 offline_or_rewind_dev(dev);
646 force_close_dev(dev);
647 bnet_fsend(dir, _("3002 Device %s unmounted.\n"), dev_name(dev));
651 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
654 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
655 pm_strcpy(&jcr->errmsg, dir->msg);
656 bnet_fsend(dir, _("3907 Error scanning unmount command: %s\n"), jcr->errmsg);
659 bnet_sig(dir, BNET_EOD);
664 * Release command from Director. This rewinds the device and if
665 * configured does a offline and ensures that Bacula will
666 * re-read the label of the tape before continuing. This gives
667 * the operator the chance to change the tape anytime before the
670 static int release_cmd(JCR *jcr)
673 BSOCK *dir = jcr->dir_bsock;
676 dname = get_memory(dir->msglen+1);
677 if (sscanf(dir->msg, "release %s", dname) == 1) {
678 if (find_device(jcr, dname)) {
679 dev = jcr->device->dev;
680 P(dev->mutex); /* Use P to avoid indefinite block */
681 if (!(dev->state & ST_OPENED)) {
682 Dmsg0(90, "Device already released\n");
683 bnet_fsend(dir, _("3911 Device %s already released.\n"), dev_name(dev));
685 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
686 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP) {
687 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
689 bnet_fsend(dir, _("3912 Device %s waiting for mount.\n"), dev_name(dev));
691 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
692 bnet_fsend(dir, _("3913 Device %s is busy in acquire.\n"), dev_name(dev));
694 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
695 bnet_fsend(dir, _("3914 Device %s is being labeled.\n"), dev_name(dev));
697 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
698 if (dev_state(dev, ST_READ)) {
699 Dmsg0(90, "Device in read mode\n");
700 bnet_fsend(dir, _("3915 Device %s is busy with 1 reader.\n"), dev_name(dev));
702 Dmsg1(90, "Device busy with %d writers\n", dev->num_writers);
703 bnet_fsend(dir, _("3916 Device %s is busy with %d writer(s).\n"),
704 dev_name(dev), dev->num_writers);
707 } else { /* device not being used */
708 Dmsg0(90, "Device not in use, unmounting\n");
709 release_volume(jcr, dev);
710 bnet_fsend(dir, _("3012 Device %s released.\n"), dev_name(dev));
714 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
717 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
718 pm_strcpy(&jcr->errmsg, dir->msg);
719 bnet_fsend(dir, _("3917 Error scanning release command: %s\n"), jcr->errmsg);
722 bnet_sig(dir, BNET_EOD);
729 * Autochanger command from Director
731 static int autochanger_cmd(JCR *jcr)
734 BSOCK *dir = jcr->dir_bsock;
737 dname = get_memory(dir->msglen+1);
738 if (sscanf(dir->msg, "autochanger list %s ", dname) == 1) {
739 if (find_device(jcr, dname)) {
740 dev = jcr->device->dev;
741 P(dev->mutex); /* Use P to avoid indefinite block */
742 if (!dev_is_tape(dev)) {
743 bnet_fsend(dir, _("3995 Device %s is not an autochanger.\n"), dev_name(dev));
744 } else if (!(dev->state & ST_OPENED)) {
745 autochanger_list(jcr, dev, dir);
746 /* Under certain "safe" conditions, we can steal the lock */
747 } else if (dev->dev_blocked &&
748 (dev->dev_blocked == BST_UNMOUNTED ||
749 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
750 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
751 autochanger_list(jcr, dev, dir);
752 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
753 if (dev_state(dev, ST_READ)) {
754 bnet_fsend(dir, _("3901 Device %s is busy with 1 reader.\n"), dev_name(dev));
756 bnet_fsend(dir, _("3902 Device %s is busy with %d writer(s).\n"),
757 dev_name(dev), dev->num_writers);
759 } else { /* device not being used */
760 autochanger_list(jcr, dev, dir);
764 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
766 } else { /* error on scanf */
767 pm_strcpy(&jcr->errmsg, dir->msg);
768 bnet_fsend(dir, _("3908 Error scanning autocharger list command: %s\n"),
772 bnet_sig(dir, BNET_EOD);
777 * Read and return the Volume label
779 static int readlabel_cmd(JCR *jcr)
782 BSOCK *dir = jcr->dir_bsock;
786 dname = get_memory(dir->msglen+1);
787 if (sscanf(dir->msg, "readlabel %s Slot=%d", dname, &Slot) == 2) {
788 if (find_device(jcr, dname)) {
789 dev = jcr->device->dev;
791 P(dev->mutex); /* Use P to avoid indefinite block */
792 if (!dev_state(dev, ST_OPENED)) {
793 read_volume_label(jcr, dev, Slot);
794 force_close_dev(dev);
795 /* Under certain "safe" conditions, we can steal the lock */
796 } else if (dev->dev_blocked &&
797 (dev->dev_blocked == BST_UNMOUNTED ||
798 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
799 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
800 read_volume_label(jcr, dev, Slot);
801 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
802 if (dev_state(dev, ST_READ)) {
803 bnet_fsend(dir, _("3911 Device %s is busy with 1 reader.\n"),
806 bnet_fsend(dir, _("3912 Device %s is busy with %d writer(s).\n"),
807 dev_name(dev), dev->num_writers);
809 } else { /* device not being used */
810 read_volume_label(jcr, dev, Slot);
814 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
817 pm_strcpy(&jcr->errmsg, dir->msg);
818 bnet_fsend(dir, _("3909 Error scanning readlabel command: %s\n"), jcr->errmsg);
821 bnet_sig(dir, BNET_EOD);
826 * Read the tape label
828 * Enter with the mutex set
830 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot)
832 BSOCK *dir = jcr->dir_bsock;
836 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
837 block = new_block(dev);
839 jcr->VolumeName[0] = 0;
840 jcr->VolCatInfo.Slot = Slot;
841 if (autoload_device(jcr, dev, 0, dir) < 0) { /* autoload if possible */
845 /* Ensure that the device is open -- autoload_device() closes it */
846 for ( ; !dev_state(dev, ST_OPENED); ) {
847 if (open_dev(dev, jcr->VolumeName, OPEN_READ_WRITE) < 0) {
848 bnet_fsend(dir, _("3910 Unable to open device \"%s\". ERR=%s\n"),
849 dev_name(dev), strerror_dev(dev));
854 dev->state &= ~ST_LABEL; /* force read of label */
855 switch (read_dev_volume_label(jcr, dev, block)) {
857 /* DO NOT add quotes around the Volume name. It is scanned in the DIR */
858 bnet_fsend(dir, _("3001 Volume=%s Slot=%d\n"), dev->VolHdr.VolName, Slot);
859 Dmsg1(100, "Volume: %s\n", dev->VolHdr.VolName);
862 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device \"%s\" because:\n%s"),
863 dev_name(dev), jcr->errmsg);
869 give_back_device_lock(dev, &hold);