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);
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);
88 * The following are the recognized commands from the Director.
90 static struct s_cmds cmds[] = {
91 {"JobId=", job_cmd}, /* start Job */
92 {"setdebug=", setdebug_cmd}, /* set debug level */
93 {"cancel", cancel_cmd},
94 {"label", label_cmd}, /* label a tape */
95 {"relabel", relabel_cmd}, /* relabel a tape */
97 {"unmount", unmount_cmd},
98 {"status", status_cmd},
99 {".status", qstatus_cmd},
100 {"autochanger", autochanger_cmd},
101 {"release", release_cmd},
102 {"readlabel", readlabel_cmd},
103 {NULL, NULL} /* list terminator */
108 * Connection request. We accept connections either from the
109 * Director or a Client (File daemon).
111 * Note, we are running as a seperate thread of the Storage daemon.
112 * and it is because a Director has made a connection with
113 * us on the "Message" channel.
115 * Basic tasks done here:
116 * - Create a JCR record
117 * - If it was from the FD, call handle_filed_connection()
118 * - Authenticate the Director
119 * - We wait for a command
120 * - We execute the command
121 * - We continue or exit depending on the return status
123 void *handle_connection_request(void *arg)
125 BSOCK *bs = (BSOCK *)arg;
130 char name[MAX_NAME_LENGTH];
132 if (bnet_recv(bs) <= 0) {
133 Emsg0(M_ERROR, 0, _("Connection request failed.\n"));
139 * Do a sanity check on the message received
141 if (bs->msglen < 25 || bs->msglen > (int)sizeof(name)-25) {
142 Emsg1(M_ERROR, 0, _("Invalid Dir connection. Len=%d\n"), bs->msglen);
147 * See if this is a File daemon connection. If so
150 Dmsg1(110, "Conn: %s", bs->msg);
151 if (sscanf(bs->msg, "Hello Start Job %127s", name) == 1) {
152 handle_filed_connection(bs, name);
156 Dmsg0(110, "Start Dir Job\n");
157 jcr = new_jcr(sizeof(JCR), stored_free_jcr); /* create Job Control Record */
158 jcr->dir_bsock = bs; /* save Director bsock */
159 jcr->dir_bsock->jcr = jcr;
160 /* Initialize FD start condition variable */
161 int errstat = pthread_cond_init(&jcr->job_start_wait, NULL);
163 Jmsg1(jcr, M_FATAL, 0, _("Unable to init job cond variable: ERR=%s\n"), strerror(errstat));
168 Dmsg0(1000, "stored in start_job\n");
171 * Authenticate the Director
173 if (!authenticate_director(jcr)) {
174 Jmsg(jcr, M_FATAL, 0, _("Unable to authenticate Director\n"));
178 Dmsg0(90, "Message channel init completed.\n");
180 for (quit=0; !quit;) {
182 if ((bnet_stat = bnet_recv(bs)) <= 0) {
183 break; /* connection terminated */
185 Dmsg1(9, "<dird: %s\n", bs->msg);
187 for (i=0; cmds[i].cmd; i++) {
188 if (strncmp(cmds[i].cmd, bs->msg, strlen(cmds[i].cmd)) == 0) {
189 if (!cmds[i].func(jcr)) { /* do command */
190 quit = true; /* error, get out */
191 Dmsg1(90, "Command %s requsts quit\n", cmds[i].cmd);
193 found = true; /* indicate command found */
197 if (!found) { /* command not found */
198 bnet_fsend(bs, derrmsg);
203 bnet_sig(bs, BNET_TERMINATE);
209 * Set debug level as requested by the Director
212 static int setdebug_cmd(JCR *jcr)
214 BSOCK *dir = jcr->dir_bsock;
215 int level, trace_flag;
217 Dmsg1(10, "setdebug_cmd: %s", dir->msg);
218 if (sscanf(dir->msg, "setdebug=%d trace=%d", &level, &trace_flag) != 2 || level < 0) {
219 bnet_fsend(dir, "3991 Bad setdebug command: %s\n", dir->msg);
223 set_trace(trace_flag);
224 return bnet_fsend(dir, OKsetdebug, level);
231 static int cancel_cmd(JCR *cjcr)
233 BSOCK *dir = cjcr->dir_bsock;
235 char Job[MAX_NAME_LENGTH];
238 if (sscanf(dir->msg, "cancel Job=%127s", Job) == 1) {
239 if (!(jcr=get_jcr_by_full_name(Job))) {
240 bnet_fsend(dir, _("3992 Job %s not found.\n"), Job);
243 oldStatus = jcr->JobStatus;
244 set_jcr_job_status(jcr, JS_Canceled);
245 if (!jcr->authenticated && oldStatus == JS_WaitFD) {
246 pthread_cond_signal(&jcr->job_start_wait); /* wake waiting thread */
249 if (jcr->file_bsock) {
250 bnet_sig(jcr->file_bsock, BNET_TERMINATE);
252 /* If thread waiting on mount, wake him */
253 if (jcr->dcr && jcr->dcr->dev &&
254 (jcr->dcr->dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
255 jcr->dcr->dev->dev_blocked == BST_UNMOUNTED ||
256 jcr->dcr->dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
257 pthread_cond_signal(&jcr->dcr->dev->wait_next_vol);
259 bnet_fsend(dir, _("3000 Job %s marked to be canceled.\n"), jcr->Job);
263 bnet_fsend(dir, _("3993 Error scanning cancel command.\n"));
265 bnet_sig(dir, BNET_EOD);
273 static int label_cmd(JCR *jcr)
275 return do_label(jcr, 0);
278 static int relabel_cmd(JCR *jcr)
280 return do_label(jcr, 1);
283 static int do_label(JCR *jcr, int relabel)
285 POOLMEM *dname, *newname, *oldname, *poolname, *mtype;
286 BSOCK *dir = jcr->dir_bsock;
291 dname = get_memory(dir->msglen+1);
292 newname = get_memory(dir->msglen+1);
293 oldname = get_memory(dir->msglen+1);
294 poolname = get_memory(dir->msglen+1);
295 mtype = get_memory(dir->msglen+1);
297 if (sscanf(dir->msg, "relabel %s OldName=%s NewName=%s PoolName=%s MediaType=%s Slot=%d",
298 dname, oldname, newname, poolname, mtype, &slot) == 6) {
303 if (sscanf(dir->msg, "label %s VolumeName=%s PoolName=%s MediaType=%s Slot=%d",
304 dname, newname, poolname, mtype, &slot) == 5) {
309 unbash_spaces(newname);
310 unbash_spaces(oldname);
311 unbash_spaces(poolname);
312 unbash_spaces(mtype);
313 dev = find_device(jcr, dname);
315 /******FIXME**** compare MediaTypes */
316 P(dev->mutex); /* Use P to avoid indefinite block */
317 if (!(dev->state & ST_OPENED)) {
318 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
319 force_close_dev(dev);
320 /* Under certain "safe" conditions, we can steal the lock */
321 } else if (dev->dev_blocked &&
322 (dev->dev_blocked == BST_UNMOUNTED ||
323 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
324 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
325 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
326 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
327 if (dev_state(dev, ST_READ)) {
328 bnet_fsend(dir, _("3911 Device %s is busy with 1 reader.\n"),
331 bnet_fsend(dir, _("3912 Device %s is busy with %d writer(s).\n"),
332 dev_name(dev), dev->num_writers);
334 } else { /* device not being used */
335 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
339 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
342 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
343 pm_strcpy(&jcr->errmsg, dir->msg);
344 bnet_fsend(dir, _("3903 Error scanning label command: %s\n"), jcr->errmsg);
347 free_memory(oldname);
348 free_memory(newname);
349 free_memory(poolname);
351 bnet_sig(dir, BNET_EOD);
356 * Read the tape label and determine if we can safely
357 * label the tape (not a Bacula volume), then label it.
359 * Enter with the mutex set
361 static void label_volume_if_ok(JCR *jcr, DEVICE *dev, char *oldname,
362 char *newname, char *poolname,
363 int slot, int relabel)
365 BSOCK *dir = jcr->dir_bsock;
370 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
371 block = new_block(dev);
373 pm_strcpy(&jcr->VolumeName, newname);
374 jcr->VolCatInfo.Slot = slot;
375 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
379 /* Ensure that the device is open -- autoload_device() closes it */
380 for ( ; !(dev->state & ST_OPENED); ) {
381 if (open_dev(dev, jcr->VolumeName, OPEN_READ_WRITE) < 0) {
382 bnet_fsend(dir, _("3910 Unable to open device %s. ERR=%s\n"),
383 dev_name(dev), strerror_dev(dev));
388 /* See what we have for a Volume */
389 switch (read_dev_volume_label(dcr, block)) {
391 case VOL_VERSION_ERROR:
392 case VOL_LABEL_ERROR:
396 "3911 Cannot label Volume because it is already labeled: \"%s\"\n"),
397 dev->VolHdr.VolName);
400 /* Relabel request. If oldname matches, continue */
401 if (strcmp(oldname, dev->VolHdr.VolName) != 0) {
402 bnet_fsend(dir, _("Wrong volume mounted.\n"));
405 /* Fall through wanted! */
408 if (!write_new_volume_label_to_dev(dcr, newname, poolname)) {
409 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
412 pm_strcpy(&jcr->VolumeName, newname);
413 /* The following 3000 OK label. string is scanned in ua_label.c */
414 bnet_fsend(dir, "3000 OK label. Volume=%s Device=%s\n",
415 newname, dev_name(dev));
418 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
421 bnet_fsend(dir, _("3913 Cannot label Volume. \
422 Unknown status %d from read_volume_label()\n"), jcr->label_status);
427 give_back_device_lock(dev, &hold);
433 * Read the tape label
435 * Enter with the mutex set
437 static int read_label(JCR *jcr, DEVICE *dev)
440 BSOCK *dir = jcr->dir_bsock;
445 steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
447 jcr->VolumeName[0] = 0;
448 block = new_block(dev);
449 dev->state &= ~ST_LABEL; /* force read of label */
450 switch (read_dev_volume_label(dcr, block)) {
452 bnet_fsend(dir, _("3001 Mounted Volume: %s\n"), dev->VolHdr.VolName);
456 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device \"%s\" because:\n%s"),
457 dev_name(dev), jcr->errmsg);
462 give_back_device_lock(dev, &hold);
466 static DEVICE *find_device(JCR *jcr, char *dname)
471 unbash_spaces(dname);
473 foreach_res(device, R_DEVICE) {
474 /* Find resource, and make sure we were able to open it */
475 if (strcmp(device->hdr.name, dname) == 0 && device->dev) {
476 Dmsg1(20, "Found device %s\n", device->hdr.name);
477 jcr->device = device;
484 * ****FIXME***** device->dev may not point to right device
485 * if there are multiple devices open
487 jcr->dcr = new_dcr(jcr, device->dev);
489 return jcr->dcr->dev;
497 * Mount command from Director
499 static int mount_cmd(JCR *jcr)
502 BSOCK *dir = jcr->dir_bsock;
506 dname = get_memory(dir->msglen+1);
507 if (sscanf(dir->msg, "mount %s", dname) == 1) {
508 dev = find_device(jcr, dname);
512 P(dev->mutex); /* Use P to avoid indefinite block */
513 switch (dev->dev_blocked) { /* device blocked? */
514 case BST_WAITING_FOR_SYSOP:
515 /* Someone is waiting, wake him */
516 Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
517 dev->dev_blocked = BST_MOUNT;
518 bnet_fsend(dir, "3001 OK mount. Device=%s\n", dev_name(dev));
519 pthread_cond_signal(&dev->wait_next_vol);
522 /* In both of these two cases, we (the user) unmounted the Volume */
523 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
525 /* We freed the device, so reopen it and wake any waiting threads */
526 if (open_dev(dev, NULL, OPEN_READ_WRITE) < 0) {
527 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
531 block = new_block(dev);
532 read_dev_volume_label(dcr, block);
534 if (dev->dev_blocked == BST_UNMOUNTED) {
535 /* We blocked the device, so unblock it */
536 Dmsg0(100, "Unmounted. Unblocking device\n");
537 read_label(jcr, dev); /* this should not be necessary */
540 Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
541 dev->dev_blocked = BST_MOUNT;
543 if (dev_state(dev, ST_LABEL)) {
544 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
545 dev_name(dev), dev->VolHdr.VolName);
547 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
548 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
551 pthread_cond_signal(&dev->wait_next_vol);
554 case BST_DOING_ACQUIRE:
555 bnet_fsend(dir, _("3001 Device %s is mounted; doing acquire.\n"),
559 case BST_WRITING_LABEL:
560 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"), dev_name(dev));
563 case BST_NOT_BLOCKED:
564 if (dev_state(dev, ST_OPENED)) {
565 if (dev_state(dev, ST_LABEL)) {
566 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
567 dev_name(dev), dev->VolHdr.VolName);
569 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
570 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
574 if (!dev_is_tape(dev)) {
575 bnet_fsend(dir, _("3906 cannot mount non-tape.\n"));
578 if (open_dev(dev, NULL, OPEN_READ_WRITE) < 0) {
579 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
583 read_label(jcr, dev);
584 if (dev_state(dev, ST_LABEL)) {
585 bnet_fsend(dir, _("3001 Device %s is already mounted with Volume \"%s\"\n"),
586 dev_name(dev), dev->VolHdr.VolName);
588 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
589 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
596 bnet_fsend(dir, _("3905 Bizarre wait state %d\n"), dev->dev_blocked);
601 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
604 pm_strcpy(&jcr->errmsg, dir->msg);
605 bnet_fsend(dir, _("3909 Error scanning mount command: %s\n"), jcr->errmsg);
608 bnet_sig(dir, BNET_EOD);
613 * unmount command from Director
615 static int unmount_cmd(JCR *jcr)
618 BSOCK *dir = jcr->dir_bsock;
621 dname = get_memory(dir->msglen+1);
622 if (sscanf(dir->msg, "unmount %s", dname) == 1) {
623 dev = find_device(jcr, dname);
625 P(dev->mutex); /* Use P to avoid indefinite block */
626 if (!(dev->state & ST_OPENED)) {
627 Dmsg0(90, "Device already unmounted\n");
628 bnet_fsend(dir, _("3901 Device \"%s\" is already unmounted.\n"), dev_name(dev));
630 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP) {
631 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
633 open_dev(dev, NULL, 0); /* fake open for close */
634 offline_or_rewind_dev(dev);
635 force_close_dev(dev);
636 dev->dev_blocked = BST_UNMOUNTED_WAITING_FOR_SYSOP;
637 bnet_fsend(dir, _("3001 Device \"%s\" unmounted.\n"), dev_name(dev));
639 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
640 bnet_fsend(dir, _("3902 Device \"%s\" is busy in acquire.\n"), dev_name(dev));
642 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
643 bnet_fsend(dir, _("3903 Device \"%s\" is being labeled.\n"), dev_name(dev));
645 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
646 if (dev_state(dev, ST_READ)) {
647 Dmsg0(90, "Device in read mode\n");
648 bnet_fsend(dir, _("3904 Device \"%s\" is busy reading.\n"), dev_name(dev));
650 Dmsg1(90, "Device busy with %d writers\n", dev->num_writers);
651 bnet_fsend(dir, _("3905 Device %s is busy with %d writer(s).\n"),
652 dev_name(dev), dev->num_writers);
655 } else { /* device not being used */
656 Dmsg0(90, "Device not in use, unmounting\n");
657 /* On FreeBSD, I am having ASSERT() failures in block_device()
658 * and I can only imagine that the thread id that we are
659 * leaving in no_wait_id is being re-used. So here,
660 * we simply do it by hand. Gross, but a solution.
662 /* block_device(dev, BST_UNMOUNTED); replace with 2 lines below */
663 dev->dev_blocked = BST_UNMOUNTED;
665 open_dev(dev, NULL, 0); /* fake open for close */
666 offline_or_rewind_dev(dev);
667 force_close_dev(dev);
668 bnet_fsend(dir, _("3002 Device %s unmounted.\n"), dev_name(dev));
672 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
675 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
676 pm_strcpy(&jcr->errmsg, dir->msg);
677 bnet_fsend(dir, _("3907 Error scanning unmount command: %s\n"), jcr->errmsg);
680 bnet_sig(dir, BNET_EOD);
685 * Release command from Director. This rewinds the device and if
686 * configured does a offline and ensures that Bacula will
687 * re-read the label of the tape before continuing. This gives
688 * the operator the chance to change the tape anytime before the
691 static int release_cmd(JCR *jcr)
694 BSOCK *dir = jcr->dir_bsock;
697 dname = get_memory(dir->msglen+1);
698 if (sscanf(dir->msg, "release %s", dname) == 1) {
699 dev = find_device(jcr, dname);
701 P(dev->mutex); /* Use P to avoid indefinite block */
702 if (!(dev->state & ST_OPENED)) {
703 Dmsg0(90, "Device already released\n");
704 bnet_fsend(dir, _("3911 Device %s already released.\n"), dev_name(dev));
706 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
707 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP) {
708 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
710 bnet_fsend(dir, _("3912 Device %s waiting for mount.\n"), dev_name(dev));
712 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
713 bnet_fsend(dir, _("3913 Device %s is busy in acquire.\n"), dev_name(dev));
715 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
716 bnet_fsend(dir, _("3914 Device %s is being labeled.\n"), dev_name(dev));
718 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
719 if (dev_state(dev, ST_READ)) {
720 Dmsg0(90, "Device in read mode\n");
721 bnet_fsend(dir, _("3915 Device %s is busy with 1 reader.\n"), dev_name(dev));
723 Dmsg1(90, "Device busy with %d writers\n", dev->num_writers);
724 bnet_fsend(dir, _("3916 Device %s is busy with %d writer(s).\n"),
725 dev_name(dev), dev->num_writers);
728 } else { /* device not being used */
729 Dmsg0(90, "Device not in use, unmounting\n");
730 release_volume(jcr, dev);
731 bnet_fsend(dir, _("3012 Device %s released.\n"), dev_name(dev));
735 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
738 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
739 pm_strcpy(&jcr->errmsg, dir->msg);
740 bnet_fsend(dir, _("3917 Error scanning release command: %s\n"), jcr->errmsg);
743 bnet_sig(dir, BNET_EOD);
750 * Autochanger command from Director
752 static int autochanger_cmd(JCR *jcr)
755 BSOCK *dir = jcr->dir_bsock;
759 dname = get_memory(dir->msglen+1);
760 if (sscanf(dir->msg, "autochanger list %s ", dname) == 1) {
761 dev = find_device(jcr, dname);
764 P(dev->mutex); /* Use P to avoid indefinite block */
765 if (!dev_is_tape(dev)) {
766 bnet_fsend(dir, _("3995 Device %s is not an autochanger.\n"), dev_name(dev));
767 } else if (!(dev->state & ST_OPENED)) {
768 autochanger_list(dcr, dir);
769 /* Under certain "safe" conditions, we can steal the lock */
770 } else if (dev->dev_blocked &&
771 (dev->dev_blocked == BST_UNMOUNTED ||
772 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
773 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
774 autochanger_list(dcr, dir);
775 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
776 if (dev_state(dev, ST_READ)) {
777 bnet_fsend(dir, _("3901 Device %s is busy with 1 reader.\n"), dev_name(dev));
779 bnet_fsend(dir, _("3902 Device %s is busy with %d writer(s).\n"),
780 dev_name(dev), dev->num_writers);
782 } else { /* device not being used */
783 autochanger_list(dcr, dir);
787 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
789 } else { /* error on scanf */
790 pm_strcpy(&jcr->errmsg, dir->msg);
791 bnet_fsend(dir, _("3908 Error scanning autocharger list command: %s\n"),
795 bnet_sig(dir, BNET_EOD);
800 * Read and return the Volume label
802 static int readlabel_cmd(JCR *jcr)
805 BSOCK *dir = jcr->dir_bsock;
809 dname = get_memory(dir->msglen+1);
810 if (sscanf(dir->msg, "readlabel %s Slot=%d", dname, &Slot) == 2) {
811 dev = find_device(jcr, dname);
813 P(dev->mutex); /* Use P to avoid indefinite block */
814 if (!dev_state(dev, ST_OPENED)) {
815 read_volume_label(jcr, dev, Slot);
816 force_close_dev(dev);
817 /* Under certain "safe" conditions, we can steal the lock */
818 } else if (dev->dev_blocked &&
819 (dev->dev_blocked == BST_UNMOUNTED ||
820 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
821 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
822 read_volume_label(jcr, dev, Slot);
823 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
824 if (dev_state(dev, ST_READ)) {
825 bnet_fsend(dir, _("3911 Device %s is busy with 1 reader.\n"),
828 bnet_fsend(dir, _("3912 Device %s is busy with %d writer(s).\n"),
829 dev_name(dev), dev->num_writers);
831 } else { /* device not being used */
832 read_volume_label(jcr, dev, Slot);
836 bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
839 pm_strcpy(&jcr->errmsg, dir->msg);
840 bnet_fsend(dir, _("3909 Error scanning readlabel command: %s\n"), jcr->errmsg);
843 bnet_sig(dir, BNET_EOD);
848 * Read the tape label
850 * Enter with the mutex set
852 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot)
854 BSOCK *dir = jcr->dir_bsock;
859 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
860 block = new_block(dev);
862 jcr->VolumeName[0] = 0;
863 jcr->VolCatInfo.Slot = Slot;
864 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
868 /* Ensure that the device is open -- autoload_device() closes it */
869 for ( ; !dev_state(dev, ST_OPENED); ) {
870 if (open_dev(dev, jcr->VolumeName, OPEN_READ_WRITE) < 0) {
871 bnet_fsend(dir, _("3910 Unable to open device \"%s\". ERR=%s\n"),
872 dev_name(dev), strerror_dev(dev));
877 dev->state &= ~ST_LABEL; /* force read of label */
878 switch (read_dev_volume_label(dcr, block)) {
880 /* DO NOT add quotes around the Volume name. It is scanned in the DIR */
881 bnet_fsend(dir, _("3001 Volume=%s Slot=%d\n"), dev->VolHdr.VolName, Slot);
882 Dmsg1(100, "Volume: %s\n", dev->VolHdr.VolName);
885 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device \"%s\" because:\n%s"),
886 dev_name(dev), jcr->errmsg);
892 give_back_device_lock(dev, &hold);