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 DEVICE *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 *handle_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"));
137 * Do a sanity check on the message received
139 if (bs->msglen < 25 || bs->msglen > (int)sizeof(name)-25) {
140 Emsg1(M_ERROR, 0, _("Invalid Dir connection. Len=%d\n"), bs->msglen);
145 * See if this is a File daemon connection. If so
148 Dmsg1(110, "Conn: %s", bs->msg);
149 if (sscanf(bs->msg, "Hello Start Job %127s", name) == 1) {
150 handle_filed_connection(bs, name);
154 Dmsg0(110, "Start Dir Job\n");
155 jcr = new_jcr(sizeof(JCR), stored_free_jcr); /* create Job Control Record */
156 jcr->dir_bsock = bs; /* save Director bsock */
157 jcr->dir_bsock->jcr = jcr;
158 /* Initialize FD start condition variable */
159 int errstat = pthread_cond_init(&jcr->job_start_wait, NULL);
161 Jmsg1(jcr, M_FATAL, 0, _("Unable to init job cond variable: ERR=%s\n"), strerror(errstat));
166 Dmsg0(1000, "stored in start_job\n");
169 * Authenticate the Director
171 if (!authenticate_director(jcr)) {
172 Jmsg(jcr, M_FATAL, 0, _("Unable to authenticate Director\n"));
176 Dmsg0(90, "Message channel init completed.\n");
178 for (quit=0; !quit;) {
180 if ((bnet_stat = bnet_recv(bs)) <= 0) {
181 break; /* connection terminated */
183 Dmsg1(9, "<dird: %s\n", bs->msg);
185 for (i=0; cmds[i].cmd; i++) {
186 if (strncmp(cmds[i].cmd, bs->msg, strlen(cmds[i].cmd)) == 0) {
187 if (!cmds[i].func(jcr)) { /* do command */
188 quit = true; /* error, get out */
189 Dmsg1(90, "Command %s requsts quit\n", cmds[i].cmd);
191 found = true; /* indicate command found */
195 if (!found) { /* command not found */
196 bnet_fsend(bs, derrmsg);
201 bnet_sig(bs, BNET_TERMINATE);
207 * Set debug level as requested by the Director
210 static int setdebug_cmd(JCR *jcr)
212 BSOCK *dir = jcr->dir_bsock;
213 int level, trace_flag;
215 Dmsg1(10, "setdebug_cmd: %s", dir->msg);
216 if (sscanf(dir->msg, "setdebug=%d trace=%d", &level, &trace_flag) != 2 || level < 0) {
217 bnet_fsend(dir, "3991 Bad setdebug command: %s\n", dir->msg);
221 set_trace(trace_flag);
222 return bnet_fsend(dir, OKsetdebug, level);
229 static int cancel_cmd(JCR *cjcr)
231 BSOCK *dir = cjcr->dir_bsock;
233 char Job[MAX_NAME_LENGTH];
236 if (sscanf(dir->msg, "cancel Job=%127s", Job) == 1) {
237 if (!(jcr=get_jcr_by_full_name(Job))) {
238 bnet_fsend(dir, _("3992 Job %s not found.\n"), Job);
241 oldStatus = jcr->JobStatus;
242 set_jcr_job_status(jcr, JS_Canceled);
243 if (!jcr->authenticated && oldStatus == JS_WaitFD) {
244 pthread_cond_signal(&jcr->job_start_wait); /* wake waiting thread */
247 if (jcr->file_bsock) {
248 bnet_sig(jcr->file_bsock, BNET_TERMINATE);
250 /* If thread waiting on mount, wake him */
251 if (jcr->dcr && jcr->dcr->dev &&
252 (jcr->dcr->dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
253 jcr->dcr->dev->dev_blocked == BST_UNMOUNTED ||
254 jcr->dcr->dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
255 pthread_cond_signal(&jcr->dcr->dev->wait_next_vol);
257 bnet_fsend(dir, _("3000 Job %s marked to be canceled.\n"), jcr->Job);
261 bnet_fsend(dir, _("3993 Error scanning cancel command.\n"));
263 bnet_sig(dir, BNET_EOD);
271 static int label_cmd(JCR *jcr)
273 return do_label(jcr, 0);
276 static int relabel_cmd(JCR *jcr)
278 return do_label(jcr, 1);
281 static int do_label(JCR *jcr, int relabel)
283 POOLMEM *dname, *newname, *oldname, *poolname, *mtype;
284 BSOCK *dir = jcr->dir_bsock;
289 dname = get_memory(dir->msglen+1);
290 newname = get_memory(dir->msglen+1);
291 oldname = get_memory(dir->msglen+1);
292 poolname = get_memory(dir->msglen+1);
293 mtype = get_memory(dir->msglen+1);
295 if (sscanf(dir->msg, "relabel %s OldName=%s NewName=%s PoolName=%s MediaType=%s Slot=%d",
296 dname, oldname, newname, poolname, mtype, &slot) == 6) {
301 if (sscanf(dir->msg, "label %s VolumeName=%s PoolName=%s MediaType=%s Slot=%d",
302 dname, newname, poolname, mtype, &slot) == 5) {
307 unbash_spaces(newname);
308 unbash_spaces(oldname);
309 unbash_spaces(poolname);
310 unbash_spaces(mtype);
311 dev = find_device(jcr, dname);
313 /******FIXME**** compare MediaTypes */
314 P(dev->mutex); /* Use P to avoid indefinite block */
315 if (!(dev->state & ST_OPENED)) {
316 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
317 force_close_dev(dev);
318 /* Under certain "safe" conditions, we can steal the lock */
319 } else if (dev->dev_blocked &&
320 (dev->dev_blocked == BST_UNMOUNTED ||
321 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
322 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
323 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
324 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
325 if (dev_state(dev, ST_READ)) {
326 bnet_fsend(dir, _("3911 Device %s is busy with 1 reader.\n"),
329 bnet_fsend(dir, _("3912 Device %s is busy with %d writer(s).\n"),
330 dev_name(dev), dev->num_writers);
332 } else { /* device not being used */
333 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
337 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
340 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
341 pm_strcpy(&jcr->errmsg, dir->msg);
342 bnet_fsend(dir, _("3903 Error scanning label command: %s\n"), jcr->errmsg);
345 free_memory(oldname);
346 free_memory(newname);
347 free_memory(poolname);
349 bnet_sig(dir, BNET_EOD);
354 * Read the tape label and determine if we can safely
355 * label the tape (not a Bacula volume), then label it.
357 * Enter with the mutex set
359 static void label_volume_if_ok(JCR *jcr, DEVICE *dev, char *oldname,
360 char *newname, char *poolname,
361 int slot, int relabel)
363 BSOCK *dir = jcr->dir_bsock;
368 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
369 block = new_block(dev);
371 pm_strcpy(&jcr->VolumeName, newname);
372 jcr->VolCatInfo.Slot = slot;
373 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
377 /* Ensure that the device is open -- autoload_device() closes it */
378 for ( ; !(dev->state & ST_OPENED); ) {
379 if (open_dev(dev, jcr->VolumeName, OPEN_READ_WRITE) < 0) {
380 bnet_fsend(dir, _("3910 Unable to open device %s. ERR=%s\n"),
381 dev_name(dev), strerror_dev(dev));
386 /* See what we have for a Volume */
387 switch (read_dev_volume_label(dcr, block)) {
389 case VOL_VERSION_ERROR:
390 case VOL_LABEL_ERROR:
394 "3911 Cannot label Volume because it is already labeled: \"%s\"\n"),
395 dev->VolHdr.VolName);
398 /* Relabel request. If oldname matches, continue */
399 if (strcmp(oldname, dev->VolHdr.VolName) != 0) {
400 bnet_fsend(dir, _("Wrong volume mounted.\n"));
403 /* Fall through wanted! */
406 if (!write_new_volume_label_to_dev(dcr, newname, poolname)) {
407 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
410 pm_strcpy(&jcr->VolumeName, newname);
411 /* The following 3000 OK label. string is scanned in ua_label.c */
412 bnet_fsend(dir, "3000 OK label. Volume=%s Device=%s\n",
413 newname, dev_name(dev));
416 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
419 bnet_fsend(dir, _("3913 Cannot label Volume. \
420 Unknown status %d from read_volume_label()\n"), jcr->label_status);
425 give_back_device_lock(dev, &hold);
431 * Read the tape label
433 * Enter with the mutex set
435 static int read_label(JCR *jcr, DEVICE *dev)
438 BSOCK *dir = jcr->dir_bsock;
443 steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
445 jcr->VolumeName[0] = 0;
446 block = new_block(dev);
447 dev->state &= ~ST_LABEL; /* force read of label */
448 switch (read_dev_volume_label(dcr, block)) {
450 bnet_fsend(dir, _("3001 Mounted Volume: %s\n"), dev->VolHdr.VolName);
454 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device \"%s\" because:\n%s"),
455 dev_name(dev), jcr->errmsg);
460 give_back_device_lock(dev, &hold);
464 static DEVICE *find_device(JCR *jcr, char *dname)
469 unbash_spaces(dname);
471 foreach_res(device, R_DEVICE) {
472 /* Find resource, and make sure we were able to open it */
473 if (strcmp(device->hdr.name, dname) == 0 && device->dev) {
474 Dmsg1(20, "Found device %s\n", device->hdr.name);
475 jcr->device = device;
482 * ****FIXME***** device->dev may not point to right device
483 * if there are multiple devices open
485 jcr->dcr = new_dcr(jcr, device->dev);
487 return jcr->dcr->dev;
495 * Mount command from Director
497 static int mount_cmd(JCR *jcr)
500 BSOCK *dir = jcr->dir_bsock;
504 dname = get_memory(dir->msglen+1);
505 if (sscanf(dir->msg, "mount %s", dname) == 1) {
506 dev = find_device(jcr, dname);
510 P(dev->mutex); /* Use P to avoid indefinite block */
511 switch (dev->dev_blocked) { /* device blocked? */
512 case BST_WAITING_FOR_SYSOP:
513 /* Someone is waiting, wake him */
514 Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
515 dev->dev_blocked = BST_MOUNT;
516 bnet_fsend(dir, "3001 OK mount. Device=%s\n", dev_name(dev));
517 pthread_cond_signal(&dev->wait_next_vol);
520 /* In both of these two cases, we (the user) unmounted the Volume */
521 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
523 /* We freed the device, so reopen it and wake any waiting threads */
524 if (open_dev(dev, NULL, OPEN_READ_WRITE) < 0) {
525 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
529 block = new_block(dev);
530 read_dev_volume_label(dcr, block);
532 if (dev->dev_blocked == BST_UNMOUNTED) {
533 /* We blocked the device, so unblock it */
534 Dmsg0(100, "Unmounted. Unblocking device\n");
535 read_label(jcr, dev); /* this should not be necessary */
538 Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
539 dev->dev_blocked = BST_MOUNT;
541 if (dev_state(dev, ST_LABEL)) {
542 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
543 dev_name(dev), dev->VolHdr.VolName);
545 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
546 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
549 pthread_cond_signal(&dev->wait_next_vol);
552 case BST_DOING_ACQUIRE:
553 bnet_fsend(dir, _("3001 Device %s is mounted; doing acquire.\n"),
557 case BST_WRITING_LABEL:
558 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"), dev_name(dev));
561 case BST_NOT_BLOCKED:
562 if (dev_state(dev, ST_OPENED)) {
563 if (dev_state(dev, ST_LABEL)) {
564 bnet_fsend(dir, _("3001 Device %s is 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"),
572 if (!dev_is_tape(dev)) {
573 bnet_fsend(dir, _("3906 cannot mount non-tape.\n"));
576 if (open_dev(dev, NULL, OPEN_READ_WRITE) < 0) {
577 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
581 read_label(jcr, dev);
582 if (dev_state(dev, ST_LABEL)) {
583 bnet_fsend(dir, _("3001 Device %s is already mounted with Volume \"%s\"\n"),
584 dev_name(dev), dev->VolHdr.VolName);
586 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
587 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
594 bnet_fsend(dir, _("3905 Bizarre wait state %d\n"), dev->dev_blocked);
599 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
602 pm_strcpy(&jcr->errmsg, dir->msg);
603 bnet_fsend(dir, _("3909 Error scanning mount command: %s\n"), jcr->errmsg);
606 bnet_sig(dir, BNET_EOD);
611 * unmount command from Director
613 static int unmount_cmd(JCR *jcr)
616 BSOCK *dir = jcr->dir_bsock;
619 dname = get_memory(dir->msglen+1);
620 if (sscanf(dir->msg, "unmount %s", dname) == 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);
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);
678 bnet_sig(dir, BNET_EOD);
683 * Release command from Director. This rewinds the device and if
684 * configured does a offline and ensures that Bacula will
685 * re-read the label of the tape before continuing. This gives
686 * the operator the chance to change the tape anytime before the
689 static int release_cmd(JCR *jcr)
692 BSOCK *dir = jcr->dir_bsock;
695 dname = get_memory(dir->msglen+1);
696 if (sscanf(dir->msg, "release %s", dname) == 1) {
697 dev = find_device(jcr, dname);
699 P(dev->mutex); /* Use P to avoid indefinite block */
700 if (!(dev->state & ST_OPENED)) {
701 Dmsg0(90, "Device already released\n");
702 bnet_fsend(dir, _("3911 Device %s already released.\n"), dev_name(dev));
704 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
705 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP) {
706 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
708 bnet_fsend(dir, _("3912 Device %s waiting for mount.\n"), dev_name(dev));
710 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
711 bnet_fsend(dir, _("3913 Device %s is busy in acquire.\n"), dev_name(dev));
713 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
714 bnet_fsend(dir, _("3914 Device %s is being labeled.\n"), dev_name(dev));
716 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
717 if (dev_state(dev, ST_READ)) {
718 Dmsg0(90, "Device in read mode\n");
719 bnet_fsend(dir, _("3915 Device %s is busy with 1 reader.\n"), dev_name(dev));
721 Dmsg1(90, "Device busy with %d writers\n", dev->num_writers);
722 bnet_fsend(dir, _("3916 Device %s is busy with %d writer(s).\n"),
723 dev_name(dev), dev->num_writers);
726 } else { /* device not being used */
727 Dmsg0(90, "Device not in use, unmounting\n");
728 release_volume(jcr, dev);
729 bnet_fsend(dir, _("3012 Device %s released.\n"), dev_name(dev));
733 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
736 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
737 pm_strcpy(&jcr->errmsg, dir->msg);
738 bnet_fsend(dir, _("3917 Error scanning release command: %s\n"), jcr->errmsg);
741 bnet_sig(dir, BNET_EOD);
748 * Autochanger command from Director
750 static int autochanger_cmd(JCR *jcr)
753 BSOCK *dir = jcr->dir_bsock;
757 dname = get_memory(dir->msglen+1);
758 if (sscanf(dir->msg, "autochanger list %s ", dname) == 1) {
759 dev = find_device(jcr, dname);
762 P(dev->mutex); /* Use P to avoid indefinite block */
763 if (!dev_is_tape(dev)) {
764 bnet_fsend(dir, _("3995 Device %s is not an autochanger.\n"), dev_name(dev));
765 } else if (!(dev->state & ST_OPENED)) {
766 autochanger_list(dcr, dir);
767 /* Under certain "safe" conditions, we can steal the lock */
768 } else if (dev->dev_blocked &&
769 (dev->dev_blocked == BST_UNMOUNTED ||
770 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
771 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
772 autochanger_list(dcr, dir);
773 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
774 if (dev_state(dev, ST_READ)) {
775 bnet_fsend(dir, _("3901 Device %s is busy with 1 reader.\n"), dev_name(dev));
777 bnet_fsend(dir, _("3902 Device %s is busy with %d writer(s).\n"),
778 dev_name(dev), dev->num_writers);
780 } else { /* device not being used */
781 autochanger_list(dcr, dir);
785 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
787 } else { /* error on scanf */
788 pm_strcpy(&jcr->errmsg, dir->msg);
789 bnet_fsend(dir, _("3908 Error scanning autocharger list command: %s\n"),
793 bnet_sig(dir, BNET_EOD);
798 * Read and return the Volume label
800 static int readlabel_cmd(JCR *jcr)
803 BSOCK *dir = jcr->dir_bsock;
807 dname = get_memory(dir->msglen+1);
808 if (sscanf(dir->msg, "readlabel %s Slot=%d", dname, &Slot) == 2) {
809 dev = find_device(jcr, dname);
811 P(dev->mutex); /* Use P to avoid indefinite block */
812 if (!dev_state(dev, ST_OPENED)) {
813 read_volume_label(jcr, dev, Slot);
814 force_close_dev(dev);
815 /* Under certain "safe" conditions, we can steal the lock */
816 } else if (dev->dev_blocked &&
817 (dev->dev_blocked == BST_UNMOUNTED ||
818 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
819 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
820 read_volume_label(jcr, dev, Slot);
821 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
822 if (dev_state(dev, ST_READ)) {
823 bnet_fsend(dir, _("3911 Device %s is busy with 1 reader.\n"),
826 bnet_fsend(dir, _("3912 Device %s is busy with %d writer(s).\n"),
827 dev_name(dev), dev->num_writers);
829 } else { /* device not being used */
830 read_volume_label(jcr, dev, Slot);
834 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
837 pm_strcpy(&jcr->errmsg, dir->msg);
838 bnet_fsend(dir, _("3909 Error scanning readlabel command: %s\n"), jcr->errmsg);
841 bnet_sig(dir, BNET_EOD);
846 * Read the tape label
848 * Enter with the mutex set
850 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot)
852 BSOCK *dir = jcr->dir_bsock;
857 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
858 block = new_block(dev);
860 jcr->VolumeName[0] = 0;
861 jcr->VolCatInfo.Slot = Slot;
862 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
866 /* Ensure that the device is open -- autoload_device() closes it */
867 for ( ; !dev_state(dev, ST_OPENED); ) {
868 if (open_dev(dev, jcr->VolumeName, OPEN_READ_WRITE) < 0) {
869 bnet_fsend(dir, _("3910 Unable to open device \"%s\". ERR=%s\n"),
870 dev_name(dev), strerror_dev(dev));
875 dev->state &= ~ST_LABEL; /* force read of label */
876 switch (read_dev_volume_label(dcr, block)) {
878 /* DO NOT add quotes around the Volume name. It is scanned in the DIR */
879 bnet_fsend(dir, _("3001 Volume=%s Slot=%d\n"), dev->VolHdr.VolName, Slot);
880 Dmsg1(100, "Volume: %s\n", dev->VolHdr.VolName);
883 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device \"%s\" because:\n%s"),
884 dev_name(dev), jcr->errmsg);
890 give_back_device_lock(dev, &hold);