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;
127 char name[MAX_NAME_LENGTH];
129 if (bnet_recv(bs) <= 0) {
130 Emsg0(M_ERROR, 0, _("Connection request failed.\n"));
135 * Do a sanity check on the message received
137 if (bs->msglen < 25 || bs->msglen > (int)sizeof(name)-25) {
138 Emsg1(M_ERROR, 0, _("Invalid Dir connection. Len=%d\n"), bs->msglen);
141 * See if this is a File daemon connection. If so
144 if (sscanf(bs->msg, "Hello Start Job %127s calling\n", name) == 1) {
145 handle_filed_connection(bs, name);
149 jcr = new_jcr(sizeof(JCR), stored_free_jcr); /* create Job Control Record */
150 jcr->dir_bsock = bs; /* save Director bsock */
151 jcr->dir_bsock->jcr = jcr;
153 Dmsg0(1000, "stored in start_job\n");
156 * Authenticate the Director
158 if (!authenticate_director(jcr)) {
159 Jmsg(jcr, M_FATAL, 0, _("Unable to authenticate Director\n"));
163 Dmsg0(90, "Message channel init completed.\n");
165 for (quit=0; !quit;) {
167 if ((bnet_stat = bnet_recv(bs)) <= 0) {
168 break; /* connection terminated */
170 Dmsg1(9, "<dird: %s\n", bs->msg);
172 for (i=0; cmds[i].cmd; i++) {
173 if (strncmp(cmds[i].cmd, bs->msg, strlen(cmds[i].cmd)) == 0) {
174 if (!cmds[i].func(jcr)) { /* do command */
175 quit = TRUE; /* error, get out */
176 Dmsg1(90, "Command %s requsts quit\n", cmds[i].cmd);
178 found = TRUE; /* indicate command found */
182 if (!found) { /* command not found */
183 bnet_fsend(bs, derrmsg);
188 bnet_sig(bs, BNET_TERMINATE);
194 * Set debug level as requested by the Director
197 static int setdebug_cmd(JCR *jcr)
199 BSOCK *dir = jcr->dir_bsock;
202 Dmsg1(10, "setdebug_cmd: %s", dir->msg);
203 if (sscanf(dir->msg, "setdebug=%d", &level) != 1 || level < 0) {
204 bnet_fsend(dir, "3991 Bad setdebug command: %s\n", dir->msg);
208 return bnet_fsend(dir, OKsetdebug, level);
215 static int cancel_cmd(JCR *cjcr)
217 BSOCK *dir = cjcr->dir_bsock;
219 char Job[MAX_NAME_LENGTH];
222 if (sscanf(dir->msg, "cancel Job=%127s", Job) == 1) {
223 if (!(jcr=get_jcr_by_full_name(Job))) {
224 bnet_fsend(dir, _("3992 Job %s not found.\n"), Job);
227 oldStatus = jcr->JobStatus;
228 set_jcr_job_status(jcr, JS_Canceled);
229 if (!jcr->authenticated && oldStatus == JS_WaitFD) {
230 pthread_cond_signal(&jcr->job_start_wait); /* wake waiting thread */
233 if (jcr->file_bsock) {
234 bnet_sig(jcr->file_bsock, BNET_TERMINATE);
236 /* If thread waiting on mount, wake him */
237 if (jcr->device && jcr->device->dev &&
238 (jcr->device->dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
239 jcr->device->dev->dev_blocked == BST_UNMOUNTED ||
240 jcr->device->dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
241 pthread_cond_signal(&jcr->device->dev->wait_next_vol);
243 bnet_fsend(dir, _("3000 Job %s marked to be canceled.\n"), jcr->Job);
247 bnet_fsend(dir, _("3993 Error scanning cancel command.\n"));
249 bnet_sig(dir, BNET_EOD);
257 static int label_cmd(JCR *jcr)
259 return do_label(jcr, 0);
262 static int relabel_cmd(JCR *jcr)
264 return do_label(jcr, 1);
267 static int do_label(JCR *jcr, int relabel)
269 POOLMEM *dname, *newname, *oldname, *poolname, *mtype;
270 BSOCK *dir = jcr->dir_bsock;
275 dname = get_memory(dir->msglen+1);
276 newname = get_memory(dir->msglen+1);
277 oldname = get_memory(dir->msglen+1);
278 poolname = get_memory(dir->msglen+1);
279 mtype = get_memory(dir->msglen+1);
281 if (sscanf(dir->msg, "relabel %s OldName=%s NewName=%s PoolName=%s MediaType=%s Slot=%d",
282 dname, oldname, newname, poolname, mtype, &slot) == 6) {
287 if (sscanf(dir->msg, "label %s VolumeName=%s PoolName=%s MediaType=%s Slot=%d",
288 dname, newname, poolname, mtype, &slot) == 5) {
293 unbash_spaces(newname);
294 unbash_spaces(oldname);
295 unbash_spaces(poolname);
296 unbash_spaces(mtype);
297 if (find_device(jcr, dname)) {
298 /******FIXME**** compare MediaTypes */
299 dev = jcr->device->dev;
301 P(dev->mutex); /* Use P to avoid indefinite block */
302 if (!(dev->state & ST_OPENED)) {
303 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
304 force_close_dev(dev);
305 /* Under certain "safe" conditions, we can steal the lock */
306 } else if (dev->dev_blocked &&
307 (dev->dev_blocked == BST_UNMOUNTED ||
308 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
309 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
310 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
311 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
312 if (dev_state(dev, ST_READ)) {
313 bnet_fsend(dir, _("3911 Device %s is busy with 1 reader.\n"),
316 bnet_fsend(dir, _("3912 Device %s is busy with %d writer(s).\n"),
317 dev_name(dev), dev->num_writers);
319 } else { /* device not being used */
320 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
324 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
327 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
328 pm_strcpy(&jcr->errmsg, dir->msg);
329 bnet_fsend(dir, _("3903 Error scanning label command: %s\n"), jcr->errmsg);
332 free_memory(oldname);
333 free_memory(newname);
334 free_memory(poolname);
336 bnet_sig(dir, BNET_EOD);
341 * Read the tape label and determine if we can safely
342 * label the tape (not a Bacula volume), then label it.
344 * Enter with the mutex set
346 static void label_volume_if_ok(JCR *jcr, DEVICE *dev, char *oldname,
347 char *newname, char *poolname,
348 int slot, int relabel)
350 BSOCK *dir = jcr->dir_bsock;
354 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
356 pm_strcpy(&jcr->VolumeName, newname);
357 jcr->VolCatInfo.Slot = slot;
358 autoload_device(jcr, dev, 0, dir); /* autoload if possible */
359 block = new_block(dev);
361 /* Ensure that the device is open -- autoload_device() closes it */
362 for ( ; !(dev->state & ST_OPENED); ) {
363 if (open_dev(dev, jcr->VolumeName, READ_WRITE) < 0) {
364 bnet_fsend(dir, _("3910 Unable to open device %s. ERR=%s\n"),
365 dev_name(dev), strerror_dev(dev));
370 /* See what we have for a Volume */
371 switch (read_dev_volume_label(jcr, dev, block)) {
373 case VOL_VERSION_ERROR:
374 case VOL_LABEL_ERROR:
378 "3911 Cannot label Volume because it is already labeled: \"%s\"\n"),
379 dev->VolHdr.VolName);
382 /* Relabel request. If oldname matches, continue */
383 if (strcmp(oldname, dev->VolHdr.VolName) != 0) {
384 bnet_fsend(dir, _("Wrong volume mounted.\n"));
387 /* Fall through wanted! */
390 if (!write_volume_label_to_dev(jcr, jcr->device, newname, poolname)) {
391 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
394 pm_strcpy(&jcr->VolumeName, newname);
395 bnet_fsend(dir, _("3000 OK label. Volume=%s Device=%s\n"),
396 newname, dev_name(dev));
399 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
402 bnet_fsend(dir, _("3913 Cannot label Volume. \
403 Unknown status %d from read_volume_label()\n"), jcr->label_status);
408 give_back_device_lock(dev, &hold);
415 * Read the tape label
417 * Enter with the mutex set
419 static int read_label(JCR *jcr, DEVICE *dev)
422 BSOCK *dir = jcr->dir_bsock;
426 steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
428 jcr->VolumeName[0] = 0;
429 block = new_block(dev);
430 dev->state &= ~ST_LABEL; /* force read of label */
431 switch (read_dev_volume_label(jcr, dev, block)) {
433 bnet_fsend(dir, _("3001 Mounted Volume: %s\n"), dev->VolHdr.VolName);
437 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device \"%s\" because:\n%s"),
438 dev_name(dev), jcr->errmsg);
443 give_back_device_lock(dev, &hold);
447 static bool find_device(JCR *jcr, char *dname)
449 DEVRES *device = NULL;
452 unbash_spaces(dname);
454 while ((device=(DEVRES *)GetNextRes(R_DEVICE, (RES *)device))) {
455 /* Find resource, and make sure we were able to open it */
456 if (strcmp(device->hdr.name, dname) == 0 && device->dev) {
457 Dmsg1(20, "Found device %s\n", device->hdr.name);
458 jcr->device = device;
469 * Mount command from Director
471 static int mount_cmd(JCR *jcr)
474 BSOCK *dir = jcr->dir_bsock;
477 dname = get_memory(dir->msglen+1);
478 if (sscanf(dir->msg, "mount %s", dname) == 1) {
479 if (find_device(jcr, dname)) {
481 dev = jcr->device->dev;
482 P(dev->mutex); /* Use P to avoid indefinite block */
483 switch (dev->dev_blocked) { /* device blocked? */
484 case BST_WAITING_FOR_SYSOP:
485 /* Someone is waiting, wake him */
486 Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
487 dev->dev_blocked = BST_MOUNT;
488 bnet_fsend(dir, "3001 OK mount. Device=%s\n", dev_name(dev));
489 pthread_cond_signal(&dev->wait_next_vol);
492 /* In both of these two cases, we (the user) unmounted the Volume */
493 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
495 /* We freed the device, so reopen it and wake any waiting threads */
496 if (open_dev(dev, NULL, READ_WRITE) < 0) {
497 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
501 block = new_block(dev);
502 read_dev_volume_label(jcr, dev, block);
504 if (dev->dev_blocked == BST_UNMOUNTED) {
505 /* We blocked the device, so unblock it */
506 Dmsg0(100, "Unmounted. Unblocking device\n");
507 read_label(jcr, dev); /* this should not be necessary */
510 Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
511 dev->dev_blocked = BST_MOUNT;
513 if (dev_state(dev, ST_LABEL)) {
514 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
515 dev_name(dev), dev->VolHdr.VolName);
517 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
518 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
521 pthread_cond_signal(&dev->wait_next_vol);
524 case BST_DOING_ACQUIRE:
525 bnet_fsend(dir, _("3001 Device %s is mounted; doing acquire.\n"),
529 case BST_WRITING_LABEL:
530 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"), dev_name(dev));
533 case BST_NOT_BLOCKED:
534 if (dev_state(dev, ST_OPENED)) {
535 if (dev_state(dev, ST_LABEL)) {
536 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
537 dev_name(dev), dev->VolHdr.VolName);
539 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
540 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
544 if (!dev_is_tape(dev)) {
545 bnet_fsend(dir, _("3906 cannot mount non-tape.\n"));
548 if (open_dev(dev, NULL, READ_WRITE) < 0) {
549 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
553 read_label(jcr, dev);
554 if (dev_state(dev, ST_LABEL)) {
555 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
556 dev_name(dev), dev->VolHdr.VolName);
558 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
559 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
566 bnet_fsend(dir, _("3905 Bizarre wait state %d\n"), dev->dev_blocked);
571 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
574 pm_strcpy(&jcr->errmsg, dir->msg);
575 bnet_fsend(dir, _("3909 Error scanning mount command: %s\n"), jcr->errmsg);
578 bnet_sig(dir, BNET_EOD);
583 * unmount command from Director
585 static int unmount_cmd(JCR *jcr)
588 BSOCK *dir = jcr->dir_bsock;
591 dname = get_memory(dir->msglen+1);
592 if (sscanf(dir->msg, "unmount %s", dname) == 1) {
593 if (find_device(jcr, dname)) {
594 dev = jcr->device->dev;
595 P(dev->mutex); /* Use P to avoid indefinite block */
596 if (!(dev->state & ST_OPENED)) {
597 Dmsg0(90, "Device already unmounted\n");
598 bnet_fsend(dir, _("3901 Device \"%s\" is already unmounted.\n"), dev_name(dev));
600 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP) {
601 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
603 open_dev(dev, NULL, 0); /* fake open for close */
604 offline_or_rewind_dev(dev);
605 force_close_dev(dev);
606 dev->dev_blocked = BST_UNMOUNTED_WAITING_FOR_SYSOP;
607 bnet_fsend(dir, _("3001 Device \"%s\" unmounted.\n"), dev_name(dev));
609 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
610 bnet_fsend(dir, _("3902 Device \"%s\" is busy in acquire.\n"), dev_name(dev));
612 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
613 bnet_fsend(dir, _("3903 Device \"%s\" is being labeled.\n"), dev_name(dev));
615 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
616 if (dev_state(dev, ST_READ)) {
617 Dmsg0(90, "Device in read mode\n");
618 bnet_fsend(dir, _("3904 Device \"%s\" is busy reading.\n"), dev_name(dev));
620 Dmsg1(90, "Device busy with %d writers\n", dev->num_writers);
621 bnet_fsend(dir, _("3905 Device %s is busy with %d writer(s).\n"),
622 dev_name(dev), dev->num_writers);
625 } else { /* device not being used */
626 Dmsg0(90, "Device not in use, unmounting\n");
627 /* On FreeBSD, I am having ASSERT() failures in block_device()
628 * and I can only imagine that the thread id that we are
629 * leaving in no_wait_id is being re-used. So here,
630 * we simply do it by hand. Gross, but a solution.
632 /* block_device(dev, BST_UNMOUNTED); replace with 2 lines below */
633 dev->dev_blocked = BST_UNMOUNTED;
635 open_dev(dev, NULL, 0); /* fake open for close */
636 offline_or_rewind_dev(dev);
637 force_close_dev(dev);
638 bnet_fsend(dir, _("3002 Device %s unmounted.\n"), dev_name(dev));
642 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
645 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
646 pm_strcpy(&jcr->errmsg, dir->msg);
647 bnet_fsend(dir, _("3907 Error scanning unmount command: %s\n"), jcr->errmsg);
650 bnet_sig(dir, BNET_EOD);
655 * Release command from Director. This rewinds the device and if
656 * configured does a offline and ensures that Bacula will
657 * re-read the label of the tape before continuing. This gives
658 * the operator the chance to change the tape anytime before the
661 static int release_cmd(JCR *jcr)
664 BSOCK *dir = jcr->dir_bsock;
667 dname = get_memory(dir->msglen+1);
668 if (sscanf(dir->msg, "release %s", dname) == 1) {
669 if (find_device(jcr, dname)) {
670 dev = jcr->device->dev;
671 P(dev->mutex); /* Use P to avoid indefinite block */
672 if (!(dev->state & ST_OPENED)) {
673 Dmsg0(90, "Device already released\n");
674 bnet_fsend(dir, _("3911 Device %s already released.\n"), dev_name(dev));
676 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
677 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP) {
678 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
680 bnet_fsend(dir, _("3912 Device %s waiting for mount.\n"), dev_name(dev));
682 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
683 bnet_fsend(dir, _("3913 Device %s is busy in acquire.\n"), dev_name(dev));
685 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
686 bnet_fsend(dir, _("3914 Device %s is being labeled.\n"), dev_name(dev));
688 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
689 if (dev_state(dev, ST_READ)) {
690 Dmsg0(90, "Device in read mode\n");
691 bnet_fsend(dir, _("3915 Device %s is busy with 1 reader.\n"), dev_name(dev));
693 Dmsg1(90, "Device busy with %d writers\n", dev->num_writers);
694 bnet_fsend(dir, _("3916 Device %s is busy with %d writer(s).\n"),
695 dev_name(dev), dev->num_writers);
698 } else { /* device not being used */
699 Dmsg0(90, "Device not in use, unmounting\n");
700 release_volume(jcr, dev);
701 bnet_fsend(dir, _("3012 Device %s released.\n"), dev_name(dev));
705 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
708 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
709 pm_strcpy(&jcr->errmsg, dir->msg);
710 bnet_fsend(dir, _("3917 Error scanning release command: %s\n"), jcr->errmsg);
713 bnet_sig(dir, BNET_EOD);
720 * Autochanger command from Director
722 static int autochanger_cmd(JCR *jcr)
725 BSOCK *dir = jcr->dir_bsock;
728 dname = get_memory(dir->msglen+1);
729 if (sscanf(dir->msg, "autochanger list %s ", dname) == 1) {
730 if (find_device(jcr, dname)) {
731 dev = jcr->device->dev;
732 P(dev->mutex); /* Use P to avoid indefinite block */
733 if (!dev_is_tape(dev)) {
734 bnet_fsend(dir, _("3995 Device %s is not an autochanger.\n"), dev_name(dev));
735 } else if (!(dev->state & ST_OPENED)) {
736 autochanger_list(jcr, dev, dir);
737 /* Under certain "safe" conditions, we can steal the lock */
738 } else if (dev->dev_blocked &&
739 (dev->dev_blocked == BST_UNMOUNTED ||
740 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
741 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
742 autochanger_list(jcr, dev, dir);
743 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
744 if (dev_state(dev, ST_READ)) {
745 bnet_fsend(dir, _("3901 Device %s is busy with 1 reader.\n"), dev_name(dev));
747 bnet_fsend(dir, _("3902 Device %s is busy with %d writer(s).\n"),
748 dev_name(dev), dev->num_writers);
750 } else { /* device not being used */
751 autochanger_list(jcr, dev, dir);
755 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
757 } else { /* error on scanf */
758 pm_strcpy(&jcr->errmsg, dir->msg);
759 bnet_fsend(dir, _("3908 Error scanning autocharger list command: %s\n"),
763 bnet_sig(dir, BNET_EOD);
768 * Read and return the Volume label
770 static int readlabel_cmd(JCR *jcr)
773 BSOCK *dir = jcr->dir_bsock;
777 dname = get_memory(dir->msglen+1);
778 if (sscanf(dir->msg, "readlabel %s Slot=%d", dname, &Slot) == 2) {
779 if (find_device(jcr, dname)) {
780 dev = jcr->device->dev;
782 P(dev->mutex); /* Use P to avoid indefinite block */
783 if (!dev_state(dev, ST_OPENED)) {
784 if (open_dev(dev, NULL, READ_WRITE) < 0) {
785 bnet_fsend(dir, _("3994 Connot open device: %s\n"), strerror_dev(dev));
787 read_volume_label(jcr, dev, Slot);
788 force_close_dev(dev);
790 /* Under certain "safe" conditions, we can steal the lock */
791 } else if (dev->dev_blocked &&
792 (dev->dev_blocked == BST_UNMOUNTED ||
793 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
794 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
795 read_volume_label(jcr, dev, Slot);
796 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
797 if (dev_state(dev, ST_READ)) {
798 bnet_fsend(dir, _("3911 Device %s is busy with 1 reader.\n"),
801 bnet_fsend(dir, _("3912 Device %s is busy with %d writer(s).\n"),
802 dev_name(dev), dev->num_writers);
804 } else { /* device not being used */
805 read_volume_label(jcr, dev, Slot);
809 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
812 pm_strcpy(&jcr->errmsg, dir->msg);
813 bnet_fsend(dir, _("3909 Error scanning readlabel command: %s\n"), jcr->errmsg);
816 bnet_sig(dir, BNET_EOD);
821 * Read the tape label
823 * Enter with the mutex set
825 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot)
827 BSOCK *dir = jcr->dir_bsock;
831 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
833 jcr->VolumeName[0] = 0;
834 jcr->VolCatInfo.Slot = Slot;
835 autoload_device(jcr, dev, 0, dir); /* autoload if possible */
836 block = new_block(dev);
838 /* Ensure that the device is open -- autoload_device() closes it */
839 for ( ; !dev_state(dev, ST_OPENED); ) {
840 if (open_dev(dev, jcr->VolumeName, READ_WRITE) < 0) {
841 bnet_fsend(dir, _("3910 Unable to open device \"%s\". ERR=%s\n"),
842 dev_name(dev), strerror_dev(dev));
847 dev->state &= ~ST_LABEL; /* force read of label */
848 switch (read_dev_volume_label(jcr, dev, block)) {
850 bnet_fsend(dir, _("3001 Volume=\"%s\" Slot=%d\n"), dev->VolHdr.VolName, Slot);
851 Dmsg1(100, "Volume: %s\n", dev->VolHdr.VolName);
854 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device \"%s\" because:\n%s"),
855 dev_name(dev), jcr->errmsg);
861 give_back_device_lock(dev, &hold);