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";
57 static char illegal_cmd[] = "3997 Illegal command for a Director with Monitor directive enabled\n";
59 /* Imported functions */
60 extern void terminate_child();
61 extern int job_cmd(JCR *jcr);
62 extern int status_cmd(JCR *sjcr);
63 extern int qstatus_cmd(JCR *jcr);
65 /* Forward referenced functions */
66 static int label_cmd(JCR *jcr);
67 static int relabel_cmd(JCR *jcr);
68 static int readlabel_cmd(JCR *jcr);
69 static int release_cmd(JCR *jcr);
70 static int setdebug_cmd(JCR *jcr);
71 static int cancel_cmd(JCR *cjcr);
72 static int mount_cmd(JCR *jcr);
73 static int unmount_cmd(JCR *jcr);
74 static int autochanger_cmd(JCR *sjcr);
75 static int do_label(JCR *jcr, int relabel);
76 static DEVICE *find_device(JCR *jcr, char *dname);
77 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot);
78 static void label_volume_if_ok(JCR *jcr, DEVICE *dev, char *oldname,
79 char *newname, char *poolname,
80 int Slot, int relabel);
84 int (*func)(JCR *jcr);
85 int monitoraccess; /* specify if monitors have access to this function */
89 * The following are the recognized commands from the Director.
91 static struct s_cmds cmds[] = {
92 {"JobId=", job_cmd, 0}, /* start Job */
93 {"setdebug=", setdebug_cmd, 0}, /* set debug level */
94 {"cancel", cancel_cmd, 0},
95 {"label", label_cmd, 0}, /* label a tape */
96 {"relabel", relabel_cmd, 0}, /* relabel a tape */
97 {"mount", mount_cmd, 0},
98 {"unmount", unmount_cmd, 0},
99 {"status", status_cmd, 1},
100 {".status", qstatus_cmd, 1},
101 {"autochanger", autochanger_cmd, 0},
102 {"release", release_cmd, 0},
103 {"readlabel", readlabel_cmd, 0},
104 {NULL, NULL} /* list terminator */
109 * Connection request. We accept connections either from the
110 * Director or a Client (File daemon).
112 * Note, we are running as a seperate thread of the Storage daemon.
113 * and it is because a Director has made a connection with
114 * us on the "Message" channel.
116 * Basic tasks done here:
117 * - Create a JCR record
118 * - If it was from the FD, call handle_filed_connection()
119 * - Authenticate the Director
120 * - We wait for a command
121 * - We execute the command
122 * - We continue or exit depending on the return status
124 void *handle_connection_request(void *arg)
126 BSOCK *bs = (BSOCK *)arg;
131 char name[MAX_NAME_LENGTH];
133 if (bnet_recv(bs) <= 0) {
134 Emsg0(M_ERROR, 0, _("Connection request failed.\n"));
140 * Do a sanity check on the message received
142 if (bs->msglen < 25 || bs->msglen > (int)sizeof(name)-25) {
143 Emsg1(M_ERROR, 0, _("Invalid Dir connection. Len=%d\n"), bs->msglen);
148 * See if this is a File daemon connection. If so
151 Dmsg1(110, "Conn: %s", bs->msg);
152 if (sscanf(bs->msg, "Hello Start Job %127s", name) == 1) {
153 handle_filed_connection(bs, name);
157 Dmsg0(110, "Start Dir Job\n");
158 jcr = new_jcr(sizeof(JCR), stored_free_jcr); /* create Job Control Record */
159 jcr->dir_bsock = bs; /* save Director bsock */
160 jcr->dir_bsock->jcr = jcr;
161 /* Initialize FD start condition variable */
162 int errstat = pthread_cond_init(&jcr->job_start_wait, NULL);
164 Jmsg1(jcr, M_FATAL, 0, _("Unable to init job cond variable: ERR=%s\n"), strerror(errstat));
169 Dmsg0(1000, "stored in start_job\n");
172 * Authenticate the Director
174 if (!authenticate_director(jcr)) {
175 Jmsg(jcr, M_FATAL, 0, _("Unable to authenticate Director\n"));
179 Dmsg0(90, "Message channel init completed.\n");
181 for (quit=0; !quit;) {
183 if ((bnet_stat = bnet_recv(bs)) <= 0) {
184 break; /* connection terminated */
186 Dmsg1(9, "<dird: %s\n", bs->msg);
188 for (i=0; cmds[i].cmd; i++) {
189 if (strncmp(cmds[i].cmd, bs->msg, strlen(cmds[i].cmd)) == 0) {
190 if ((!cmds[i].monitoraccess) && (jcr->director->monitor)) {
191 Dmsg1(100, "Command %s illegal.\n", cmds[i].cmd);
192 bnet_fsend(bs, illegal_cmd);
193 bnet_sig(bs, BNET_EOD);
196 if (!cmds[i].func(jcr)) { /* do command */
197 quit = true; /* error, get out */
198 Dmsg1(90, "Command %s requsts quit\n", cmds[i].cmd);
200 found = true; /* indicate command found */
204 if (!found) { /* command not found */
205 bnet_fsend(bs, derrmsg);
210 bnet_sig(bs, BNET_TERMINATE);
216 * Set debug level as requested by the Director
219 static int setdebug_cmd(JCR *jcr)
221 BSOCK *dir = jcr->dir_bsock;
222 int level, trace_flag;
224 Dmsg1(10, "setdebug_cmd: %s", dir->msg);
225 if (sscanf(dir->msg, "setdebug=%d trace=%d", &level, &trace_flag) != 2 || level < 0) {
226 bnet_fsend(dir, "3991 Bad setdebug command: %s\n", dir->msg);
230 set_trace(trace_flag);
231 return bnet_fsend(dir, OKsetdebug, level);
238 static int cancel_cmd(JCR *cjcr)
240 BSOCK *dir = cjcr->dir_bsock;
242 char Job[MAX_NAME_LENGTH];
245 if (sscanf(dir->msg, "cancel Job=%127s", Job) == 1) {
246 if (!(jcr=get_jcr_by_full_name(Job))) {
247 bnet_fsend(dir, _("3992 Job %s not found.\n"), Job);
250 oldStatus = jcr->JobStatus;
251 set_jcr_job_status(jcr, JS_Canceled);
252 if (!jcr->authenticated && oldStatus == JS_WaitFD) {
253 pthread_cond_signal(&jcr->job_start_wait); /* wake waiting thread */
256 if (jcr->file_bsock) {
257 bnet_sig(jcr->file_bsock, BNET_TERMINATE);
259 /* If thread waiting on mount, wake him */
260 if (jcr->dcr && jcr->dcr->dev &&
261 (jcr->dcr->dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
262 jcr->dcr->dev->dev_blocked == BST_UNMOUNTED ||
263 jcr->dcr->dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
264 pthread_cond_signal(&jcr->dcr->dev->wait_next_vol);
266 bnet_fsend(dir, _("3000 Job %s marked to be canceled.\n"), jcr->Job);
270 bnet_fsend(dir, _("3993 Error scanning cancel command.\n"));
272 bnet_sig(dir, BNET_EOD);
280 static int label_cmd(JCR *jcr)
282 return do_label(jcr, 0);
285 static int relabel_cmd(JCR *jcr)
287 return do_label(jcr, 1);
290 static int do_label(JCR *jcr, int relabel)
292 POOLMEM *dname, *newname, *oldname, *poolname, *mtype;
293 BSOCK *dir = jcr->dir_bsock;
298 dname = get_memory(dir->msglen+1);
299 newname = get_memory(dir->msglen+1);
300 oldname = get_memory(dir->msglen+1);
301 poolname = get_memory(dir->msglen+1);
302 mtype = get_memory(dir->msglen+1);
304 if (sscanf(dir->msg, "relabel %s OldName=%s NewName=%s PoolName=%s MediaType=%s Slot=%d",
305 dname, oldname, newname, poolname, mtype, &slot) == 6) {
310 if (sscanf(dir->msg, "label %s VolumeName=%s PoolName=%s MediaType=%s Slot=%d",
311 dname, newname, poolname, mtype, &slot) == 5) {
316 unbash_spaces(newname);
317 unbash_spaces(oldname);
318 unbash_spaces(poolname);
319 unbash_spaces(mtype);
320 dev = find_device(jcr, dname);
322 /******FIXME**** compare MediaTypes */
323 P(dev->mutex); /* Use P to avoid indefinite block */
324 if (!(dev->state & ST_OPENED)) {
325 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
326 force_close_dev(dev);
327 /* Under certain "safe" conditions, we can steal the lock */
328 } else if (dev->dev_blocked &&
329 (dev->dev_blocked == BST_UNMOUNTED ||
330 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
331 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
332 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
333 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
334 if (dev_state(dev, ST_READ)) {
335 bnet_fsend(dir, _("3911 Device %s is busy with 1 reader.\n"),
338 bnet_fsend(dir, _("3912 Device %s is busy with %d writer(s).\n"),
339 dev_name(dev), dev->num_writers);
341 } else { /* device not being used */
342 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
346 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
349 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
350 pm_strcpy(&jcr->errmsg, dir->msg);
351 bnet_fsend(dir, _("3903 Error scanning label command: %s\n"), jcr->errmsg);
354 free_memory(oldname);
355 free_memory(newname);
356 free_memory(poolname);
358 bnet_sig(dir, BNET_EOD);
363 * Read the tape label and determine if we can safely
364 * label the tape (not a Bacula volume), then label it.
366 * Enter with the mutex set
368 static void label_volume_if_ok(JCR *jcr, DEVICE *dev, char *oldname,
369 char *newname, char *poolname,
370 int slot, int relabel)
372 BSOCK *dir = jcr->dir_bsock;
377 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
378 block = new_block(dev);
380 pm_strcpy(&jcr->VolumeName, newname);
381 jcr->VolCatInfo.Slot = slot;
382 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
386 /* Ensure that the device is open -- autoload_device() closes it */
387 for ( ; !(dev->state & ST_OPENED); ) {
388 if (open_dev(dev, jcr->VolumeName, OPEN_READ_WRITE) < 0) {
389 bnet_fsend(dir, _("3910 Unable to open device %s. ERR=%s\n"),
390 dev_name(dev), strerror_dev(dev));
395 /* See what we have for a Volume */
396 switch (read_dev_volume_label(dcr, block)) {
398 case VOL_VERSION_ERROR:
399 case VOL_LABEL_ERROR:
403 "3911 Cannot label Volume because it is already labeled: \"%s\"\n"),
404 dev->VolHdr.VolName);
407 /* Relabel request. If oldname matches, continue */
408 if (strcmp(oldname, dev->VolHdr.VolName) != 0) {
409 bnet_fsend(dir, _("Wrong volume mounted.\n"));
412 /* Fall through wanted! */
415 if (!write_new_volume_label_to_dev(dcr, newname, poolname)) {
416 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
419 pm_strcpy(&jcr->VolumeName, newname);
420 /* The following 3000 OK label. string is scanned in ua_label.c */
421 bnet_fsend(dir, "3000 OK label. Volume=%s Device=%s\n",
422 newname, dev_name(dev));
425 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
428 bnet_fsend(dir, _("3913 Cannot label Volume. \
429 Unknown status %d from read_volume_label()\n"), jcr->label_status);
434 give_back_device_lock(dev, &hold);
440 * Read the tape label
442 * Enter with the mutex set
444 static int read_label(JCR *jcr, DEVICE *dev)
447 BSOCK *dir = jcr->dir_bsock;
452 steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
454 jcr->VolumeName[0] = 0;
455 block = new_block(dev);
456 dev->state &= ~ST_LABEL; /* force read of label */
457 switch (read_dev_volume_label(dcr, block)) {
459 bnet_fsend(dir, _("3001 Mounted Volume: %s\n"), dev->VolHdr.VolName);
463 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device \"%s\" because:\n%s"),
464 dev_name(dev), jcr->errmsg);
469 give_back_device_lock(dev, &hold);
473 static DEVICE *find_device(JCR *jcr, char *dname)
478 unbash_spaces(dname);
480 foreach_res(device, R_DEVICE) {
481 /* Find resource, and make sure we were able to open it */
482 if (strcmp(device->hdr.name, dname) == 0 && device->dev) {
483 Dmsg1(20, "Found device %s\n", device->hdr.name);
484 jcr->device = device;
491 * ****FIXME***** device->dev may not point to right device
492 * if there are multiple devices open
494 jcr->dcr = new_dcr(jcr, device->dev);
496 return jcr->dcr->dev;
504 * Mount command from Director
506 static int mount_cmd(JCR *jcr)
509 BSOCK *dir = jcr->dir_bsock;
513 dname = get_memory(dir->msglen+1);
514 if (sscanf(dir->msg, "mount %s", dname) == 1) {
515 dev = find_device(jcr, dname);
519 P(dev->mutex); /* Use P to avoid indefinite block */
520 switch (dev->dev_blocked) { /* device blocked? */
521 case BST_WAITING_FOR_SYSOP:
522 /* Someone is waiting, wake him */
523 Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
524 dev->dev_blocked = BST_MOUNT;
525 bnet_fsend(dir, "3001 OK mount. Device=%s\n", dev_name(dev));
526 pthread_cond_signal(&dev->wait_next_vol);
529 /* In both of these two cases, we (the user) unmounted the Volume */
530 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
532 /* We freed the device, so reopen it and wake any waiting threads */
533 if (open_dev(dev, NULL, OPEN_READ_WRITE) < 0) {
534 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
538 block = new_block(dev);
539 read_dev_volume_label(dcr, block);
541 if (dev->dev_blocked == BST_UNMOUNTED) {
542 /* We blocked the device, so unblock it */
543 Dmsg0(100, "Unmounted. Unblocking device\n");
544 read_label(jcr, dev); /* this should not be necessary */
547 Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
548 dev->dev_blocked = BST_MOUNT;
550 if (dev_state(dev, ST_LABEL)) {
551 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
552 dev_name(dev), dev->VolHdr.VolName);
554 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
555 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
558 pthread_cond_signal(&dev->wait_next_vol);
561 case BST_DOING_ACQUIRE:
562 bnet_fsend(dir, _("3001 Device %s is mounted; doing acquire.\n"),
566 case BST_WRITING_LABEL:
567 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"), dev_name(dev));
570 case BST_NOT_BLOCKED:
571 if (dev_state(dev, ST_OPENED)) {
572 if (dev_state(dev, ST_LABEL)) {
573 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
574 dev_name(dev), dev->VolHdr.VolName);
576 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
577 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
581 if (!dev_is_tape(dev)) {
582 bnet_fsend(dir, _("3906 cannot mount non-tape.\n"));
585 if (open_dev(dev, NULL, OPEN_READ_WRITE) < 0) {
586 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
590 read_label(jcr, dev);
591 if (dev_state(dev, ST_LABEL)) {
592 bnet_fsend(dir, _("3001 Device %s is already mounted with Volume \"%s\"\n"),
593 dev_name(dev), dev->VolHdr.VolName);
595 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
596 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
603 bnet_fsend(dir, _("3905 Bizarre wait state %d\n"), dev->dev_blocked);
608 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
611 pm_strcpy(&jcr->errmsg, dir->msg);
612 bnet_fsend(dir, _("3909 Error scanning mount command: %s\n"), jcr->errmsg);
615 bnet_sig(dir, BNET_EOD);
620 * unmount command from Director
622 static int unmount_cmd(JCR *jcr)
625 BSOCK *dir = jcr->dir_bsock;
628 dname = get_memory(dir->msglen+1);
629 if (sscanf(dir->msg, "unmount %s", dname) == 1) {
630 dev = find_device(jcr, dname);
632 P(dev->mutex); /* Use P to avoid indefinite block */
633 if (!(dev->state & ST_OPENED)) {
634 Dmsg0(90, "Device already unmounted\n");
635 bnet_fsend(dir, _("3901 Device \"%s\" is already unmounted.\n"), dev_name(dev));
637 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP) {
638 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
640 open_dev(dev, NULL, 0); /* fake open for close */
641 offline_or_rewind_dev(dev);
642 force_close_dev(dev);
643 dev->dev_blocked = BST_UNMOUNTED_WAITING_FOR_SYSOP;
644 bnet_fsend(dir, _("3001 Device \"%s\" unmounted.\n"), dev_name(dev));
646 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
647 bnet_fsend(dir, _("3902 Device \"%s\" is busy in acquire.\n"), dev_name(dev));
649 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
650 bnet_fsend(dir, _("3903 Device \"%s\" is being labeled.\n"), dev_name(dev));
652 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
653 if (dev_state(dev, ST_READ)) {
654 Dmsg0(90, "Device in read mode\n");
655 bnet_fsend(dir, _("3904 Device \"%s\" is busy reading.\n"), dev_name(dev));
657 Dmsg1(90, "Device busy with %d writers\n", dev->num_writers);
658 bnet_fsend(dir, _("3905 Device %s is busy with %d writer(s).\n"),
659 dev_name(dev), dev->num_writers);
662 } else { /* device not being used */
663 Dmsg0(90, "Device not in use, unmounting\n");
664 /* On FreeBSD, I am having ASSERT() failures in block_device()
665 * and I can only imagine that the thread id that we are
666 * leaving in no_wait_id is being re-used. So here,
667 * we simply do it by hand. Gross, but a solution.
669 /* block_device(dev, BST_UNMOUNTED); replace with 2 lines below */
670 dev->dev_blocked = BST_UNMOUNTED;
672 open_dev(dev, NULL, 0); /* fake open for close */
673 offline_or_rewind_dev(dev);
674 force_close_dev(dev);
675 bnet_fsend(dir, _("3002 Device %s unmounted.\n"), dev_name(dev));
679 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
682 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
683 pm_strcpy(&jcr->errmsg, dir->msg);
684 bnet_fsend(dir, _("3907 Error scanning unmount command: %s\n"), jcr->errmsg);
687 bnet_sig(dir, BNET_EOD);
692 * Release command from Director. This rewinds the device and if
693 * configured does a offline and ensures that Bacula will
694 * re-read the label of the tape before continuing. This gives
695 * the operator the chance to change the tape anytime before the
698 static int release_cmd(JCR *jcr)
701 BSOCK *dir = jcr->dir_bsock;
704 dname = get_memory(dir->msglen+1);
705 if (sscanf(dir->msg, "release %s", dname) == 1) {
706 dev = find_device(jcr, dname);
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"), dev_name(dev));
722 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
723 bnet_fsend(dir, _("3914 Device %s is being labeled.\n"), dev_name(dev));
725 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
726 if (dev_state(dev, ST_READ)) {
727 Dmsg0(90, "Device in read mode\n");
728 bnet_fsend(dir, _("3915 Device %s is busy with 1 reader.\n"), dev_name(dev));
730 Dmsg1(90, "Device busy with %d writers\n", dev->num_writers);
731 bnet_fsend(dir, _("3916 Device %s is busy with %d writer(s).\n"),
732 dev_name(dev), dev->num_writers);
735 } else { /* device not being used */
736 Dmsg0(90, "Device not in use, unmounting\n");
737 release_volume(jcr, dev);
738 bnet_fsend(dir, _("3012 Device %s released.\n"), dev_name(dev));
742 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
745 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
746 pm_strcpy(&jcr->errmsg, dir->msg);
747 bnet_fsend(dir, _("3917 Error scanning release command: %s\n"), jcr->errmsg);
750 bnet_sig(dir, BNET_EOD);
757 * Autochanger command from Director
759 static int autochanger_cmd(JCR *jcr)
762 BSOCK *dir = jcr->dir_bsock;
766 dname = get_memory(dir->msglen+1);
767 if (sscanf(dir->msg, "autochanger list %s ", dname) == 1) {
768 dev = find_device(jcr, dname);
771 P(dev->mutex); /* Use P to avoid indefinite block */
772 if (!dev_is_tape(dev)) {
773 bnet_fsend(dir, _("3995 Device %s is not an autochanger.\n"), dev_name(dev));
774 } else if (!(dev->state & ST_OPENED)) {
775 autochanger_list(dcr, dir);
776 /* Under certain "safe" conditions, we can steal the lock */
777 } else if (dev->dev_blocked &&
778 (dev->dev_blocked == BST_UNMOUNTED ||
779 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
780 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
781 autochanger_list(dcr, dir);
782 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
783 if (dev_state(dev, ST_READ)) {
784 bnet_fsend(dir, _("3901 Device %s is busy with 1 reader.\n"), dev_name(dev));
786 bnet_fsend(dir, _("3902 Device %s is busy with %d writer(s).\n"),
787 dev_name(dev), dev->num_writers);
789 } else { /* device not being used */
790 autochanger_list(dcr, dir);
794 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
796 } else { /* error on scanf */
797 pm_strcpy(&jcr->errmsg, dir->msg);
798 bnet_fsend(dir, _("3908 Error scanning autocharger list command: %s\n"),
802 bnet_sig(dir, BNET_EOD);
807 * Read and return the Volume label
809 static int readlabel_cmd(JCR *jcr)
812 BSOCK *dir = jcr->dir_bsock;
816 dname = get_memory(dir->msglen+1);
817 if (sscanf(dir->msg, "readlabel %s Slot=%d", dname, &Slot) == 2) {
818 dev = find_device(jcr, dname);
820 P(dev->mutex); /* Use P to avoid indefinite block */
821 if (!dev_state(dev, ST_OPENED)) {
822 read_volume_label(jcr, dev, Slot);
823 force_close_dev(dev);
824 /* Under certain "safe" conditions, we can steal the lock */
825 } else if (dev->dev_blocked &&
826 (dev->dev_blocked == BST_UNMOUNTED ||
827 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
828 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
829 read_volume_label(jcr, dev, Slot);
830 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
831 if (dev_state(dev, ST_READ)) {
832 bnet_fsend(dir, _("3911 Device %s is busy with 1 reader.\n"),
835 bnet_fsend(dir, _("3912 Device %s is busy with %d writer(s).\n"),
836 dev_name(dev), dev->num_writers);
838 } else { /* device not being used */
839 read_volume_label(jcr, dev, Slot);
843 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
846 pm_strcpy(&jcr->errmsg, dir->msg);
847 bnet_fsend(dir, _("3909 Error scanning readlabel command: %s\n"), jcr->errmsg);
850 bnet_sig(dir, BNET_EOD);
855 * Read the tape label
857 * Enter with the mutex set
859 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot)
861 BSOCK *dir = jcr->dir_bsock;
866 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
867 block = new_block(dev);
869 jcr->VolumeName[0] = 0;
870 jcr->VolCatInfo.Slot = Slot;
871 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
875 /* Ensure that the device is open -- autoload_device() closes it */
876 for ( ; !dev_state(dev, ST_OPENED); ) {
877 if (open_dev(dev, jcr->VolumeName, OPEN_READ_WRITE) < 0) {
878 bnet_fsend(dir, _("3910 Unable to open device \"%s\". ERR=%s\n"),
879 dev_name(dev), strerror_dev(dev));
884 dev->state &= ~ST_LABEL; /* force read of label */
885 switch (read_dev_volume_label(dcr, block)) {
887 /* DO NOT add quotes around the Volume name. It is scanned in the DIR */
888 bnet_fsend(dir, _("3001 Volume=%s Slot=%d\n"), dev->VolHdr.VolName, Slot);
889 Dmsg1(100, "Volume: %s\n", dev->VolHdr.VolName);
892 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device \"%s\" because:\n%s"),
893 dev_name(dev), jcr->errmsg);
899 give_back_device_lock(dev, &hold);