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) 2001-2005 Kern Sibbald
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 bool job_cmd(JCR *jcr);
62 extern bool use_cmd(JCR *jcr);
63 extern bool run_cmd(JCR *jcr);
64 extern bool status_cmd(JCR *sjcr);
65 extern bool qstatus_cmd(JCR *jcr);
66 extern bool query_cmd(JCR *jcr);
68 /* Forward referenced functions */
69 static bool label_cmd(JCR *jcr);
70 static bool relabel_cmd(JCR *jcr);
71 static bool readlabel_cmd(JCR *jcr);
72 static bool release_cmd(JCR *jcr);
73 static bool setdebug_cmd(JCR *jcr);
74 static bool cancel_cmd(JCR *cjcr);
75 static bool mount_cmd(JCR *jcr);
76 static bool unmount_cmd(JCR *jcr);
77 static bool autochanger_cmd(JCR *sjcr);
78 static bool do_label(JCR *jcr, int relabel);
79 static DEVICE *find_device(JCR *jcr, POOL_MEM &dname);
80 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot);
81 static void label_volume_if_ok(JCR *jcr, DEVICE *dev, char *oldname,
82 char *newname, char *poolname,
83 int Slot, int relabel);
84 static bool try_autoload_device(JCR *jcr, int slot, const char *VolName);
88 bool (*func)(JCR *jcr);
89 int monitoraccess; /* specify if monitors have access to this function */
93 * The following are the recognized commands from the Director.
95 static struct s_cmds cmds[] = {
96 {"JobId=", job_cmd, 0}, /* start Job */
97 {"autochanger", autochanger_cmd, 0},
98 {"bootstrap", bootstrap_cmd, 0},
99 {"cancel", cancel_cmd, 0},
100 {"label", label_cmd, 0}, /* label a tape */
101 {"mount", mount_cmd, 0},
102 {"readlabel", readlabel_cmd, 0},
103 {"release", release_cmd, 0},
104 {"relabel", relabel_cmd, 0}, /* relabel a tape */
105 {"setdebug=", setdebug_cmd, 0}, /* set debug level */
106 {"status", status_cmd, 1},
107 {".status", qstatus_cmd, 1},
108 {"unmount", unmount_cmd, 0},
109 {"use device=", use_cmd, 0},
111 {"query", query_cmd, 0},
112 {NULL, NULL} /* list terminator */
117 * Connection request. We accept connections either from the
118 * Director or a Client (File daemon).
120 * Note, we are running as a seperate thread of the Storage daemon.
121 * and it is because a Director has made a connection with
122 * us on the "Message" channel.
124 * Basic tasks done here:
125 * - Create a JCR record
126 * - If it was from the FD, call handle_filed_connection()
127 * - Authenticate the Director
128 * - We wait for a command
129 * - We execute the command
130 * - We continue or exit depending on the return status
132 void *handle_connection_request(void *arg)
134 BSOCK *bs = (BSOCK *)arg;
139 char name[MAX_NAME_LENGTH];
141 if (bnet_recv(bs) <= 0) {
142 Emsg0(M_ERROR, 0, _("Connection request failed.\n"));
148 * Do a sanity check on the message received
150 if (bs->msglen < 25 || bs->msglen > (int)sizeof(name)-25) {
151 Emsg1(M_ERROR, 0, _("Invalid connection. Len=%d\n"), bs->msglen);
156 * See if this is a File daemon connection. If so
159 Dmsg1(110, "Conn: %s", bs->msg);
160 if (sscanf(bs->msg, "Hello Start Job %127s", name) == 1) {
161 handle_filed_connection(bs, name);
165 Dmsg0(110, "Start Dir Job\n");
166 jcr = new_jcr(sizeof(JCR), stored_free_jcr); /* create Job Control Record */
167 jcr->dir_bsock = bs; /* save Director bsock */
168 jcr->dir_bsock->jcr = jcr;
169 /* Initialize FD start condition variable */
170 int errstat = pthread_cond_init(&jcr->job_start_wait, NULL);
172 Jmsg1(jcr, M_FATAL, 0, _("Unable to init job cond variable: ERR=%s\n"), strerror(errstat));
176 Dmsg0(1000, "stored in start_job\n");
179 * Authenticate the Director
181 if (!authenticate_director(jcr)) {
182 Jmsg(jcr, M_FATAL, 0, _("Unable to authenticate Director\n"));
185 Dmsg0(90, "Message channel init completed.\n");
187 for (quit=false; !quit;) {
189 if ((bnet_stat = bnet_recv(bs)) <= 0) {
190 break; /* connection terminated */
192 Dmsg1(199, "<dird: %s\n", bs->msg);
194 for (i=0; cmds[i].cmd; i++) {
195 if (strncmp(cmds[i].cmd, bs->msg, strlen(cmds[i].cmd)) == 0) {
196 if ((!cmds[i].monitoraccess) && (jcr->director->monitor)) {
197 Dmsg1(100, "Command %s illegal.\n", cmds[i].cmd);
198 bnet_fsend(bs, illegal_cmd);
199 bnet_sig(bs, BNET_EOD);
202 Dmsg1(200, "Do command: %s\n", cmds[i].cmd);
203 if (!cmds[i].func(jcr)) { /* do command */
204 quit = true; /* error, get out */
205 Dmsg1(190, "Command %s requsts quit\n", cmds[i].cmd);
207 found = true; /* indicate command found */
211 if (!found) { /* command not found */
212 bnet_fsend(bs, derrmsg);
217 dequeue_messages(jcr); /* send any queued messages */
218 bnet_sig(bs, BNET_TERMINATE);
224 * Set debug level as requested by the Director
227 static bool setdebug_cmd(JCR *jcr)
229 BSOCK *dir = jcr->dir_bsock;
230 int level, trace_flag;
232 Dmsg1(10, "setdebug_cmd: %s", dir->msg);
233 if (sscanf(dir->msg, "setdebug=%d trace=%d", &level, &trace_flag) != 2 || level < 0) {
234 bnet_fsend(dir, "3991 Bad setdebug command: %s\n", dir->msg);
238 set_trace(trace_flag);
239 return bnet_fsend(dir, OKsetdebug, level);
246 static bool cancel_cmd(JCR *cjcr)
248 BSOCK *dir = cjcr->dir_bsock;
250 char Job[MAX_NAME_LENGTH];
253 if (sscanf(dir->msg, "cancel Job=%127s", Job) == 1) {
254 if (!(jcr=get_jcr_by_full_name(Job))) {
255 bnet_fsend(dir, _("3992 Job %s not found.\n"), Job);
258 oldStatus = jcr->JobStatus;
259 set_jcr_job_status(jcr, JS_Canceled);
260 if (!jcr->authenticated && oldStatus == JS_WaitFD) {
261 pthread_cond_signal(&jcr->job_start_wait); /* wake waiting thread */
264 if (jcr->file_bsock) {
265 bnet_sig(jcr->file_bsock, BNET_TERMINATE);
267 /* If thread waiting on mount, wake him */
268 if (jcr->dcr && jcr->dcr->dev &&
269 (jcr->dcr->dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
270 jcr->dcr->dev->dev_blocked == BST_UNMOUNTED ||
271 jcr->dcr->dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
272 pthread_cond_signal(&jcr->dcr->dev->wait_next_vol);
274 bnet_fsend(dir, _("3000 Job %s marked to be canceled.\n"), jcr->Job);
278 bnet_fsend(dir, _("3993 Error scanning cancel command.\n"));
280 bnet_sig(dir, BNET_EOD);
288 static bool label_cmd(JCR *jcr)
290 return do_label(jcr, 0);
293 static bool relabel_cmd(JCR *jcr)
295 return do_label(jcr, 1);
298 static bool do_label(JCR *jcr, int relabel)
300 POOLMEM *newname, *oldname, *poolname, *mtype;
302 BSOCK *dir = jcr->dir_bsock;
307 newname = get_memory(dir->msglen+1);
308 oldname = get_memory(dir->msglen+1);
309 poolname = get_memory(dir->msglen+1);
310 mtype = get_memory(dir->msglen+1);
312 if (sscanf(dir->msg, "relabel %127s OldName=%127s NewName=%127s PoolName=%127s MediaType=%127s Slot=%d",
313 dname.c_str(), oldname, newname, poolname, mtype, &slot) == 6) {
318 if (sscanf(dir->msg, "label %127s VolumeName=%127s PoolName=%127s MediaType=%127s Slot=%d",
319 dname.c_str(), newname, poolname, mtype, &slot) == 5) {
324 unbash_spaces(newname);
325 unbash_spaces(oldname);
326 unbash_spaces(poolname);
327 unbash_spaces(mtype);
328 dev = find_device(jcr, dname);
330 /******FIXME**** compare MediaTypes */
331 P(dev->mutex); /* Use P to avoid indefinite block */
332 if (!dev->is_open()) {
333 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
334 force_close_dev(dev);
335 /* Under certain "safe" conditions, we can steal the lock */
336 } else if (dev->dev_blocked &&
337 (dev->dev_blocked == BST_UNMOUNTED ||
338 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
339 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
340 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
341 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
342 if (dev_state(dev, ST_READ)) {
343 bnet_fsend(dir, _("3911 Device %s is busy with 1 reader.\n"),
346 bnet_fsend(dir, _("3912 Device %s is busy with %d writer(s).\n"),
347 dev_name(dev), dev->num_writers);
349 } else { /* device not being used */
350 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
354 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), dname.c_str());
357 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
358 pm_strcpy(jcr->errmsg, dir->msg);
359 bnet_fsend(dir, _("3903 Error scanning label command: %s\n"), jcr->errmsg);
361 free_memory(oldname);
362 free_memory(newname);
363 free_memory(poolname);
365 bnet_sig(dir, BNET_EOD);
370 * Read the tape label and determine if we can safely
371 * label the tape (not a Bacula volume), then label it.
373 * Enter with the mutex set
375 static void label_volume_if_ok(JCR *jcr, DEVICE *dev, char *oldname,
376 char *newname, char *poolname,
377 int slot, int relabel)
379 BSOCK *dir = jcr->dir_bsock;
385 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
387 if (!try_autoload_device(jcr, slot, newname)) {
388 goto bail_out; /* error */
391 /* See what we have for a Volume */
393 label_status = read_dev_volume_label_guess(dcr, 1);
395 label_status = read_dev_volume_label(dcr);
398 switch(label_status) {
400 case VOL_VERSION_ERROR:
401 case VOL_LABEL_ERROR:
405 "3911 Cannot label Volume because it is already labeled: \"%s\"\n"),
406 dev->VolHdr.VolName);
409 /* Relabel request. If oldname matches, continue */
410 if (strcmp(oldname, dev->VolHdr.VolName) != 0) {
411 bnet_fsend(dir, _("Wrong volume mounted.\n"));
414 /* Fall through wanted! */
417 if (!write_new_volume_label_to_dev(dcr, newname, poolname)) {
418 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
421 bstrncpy(dcr->VolumeName, newname, sizeof(dcr->VolumeName));
422 /* The following 3000 OK label. string is scanned in ua_label.c */
423 bnet_fsend(dir, "3000 OK label. Volume=%s Device=%s\n",
424 newname, dev_name(dev));
427 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
430 bnet_fsend(dir, _("3913 Cannot label Volume. "
431 "Unknown status %d from read_volume_label()\n"), label_status);
436 give_back_device_lock(dev, &hold);
442 * Read the tape label
444 * Enter with the mutex set
446 static bool read_label(DCR *dcr)
450 BSOCK *dir = jcr->dir_bsock;
452 DEVICE *dev = dcr->dev;
454 steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
456 dcr->VolumeName[0] = 0;
457 dev->state &= ~ST_LABEL; /* force read of label */
458 switch (read_dev_volume_label(dcr)) {
460 bnet_fsend(dir, _("3001 Mounted Volume: %s\n"), dev->VolHdr.VolName);
464 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device \"%s\" because:\n%s"),
465 dev_name(dev), jcr->errmsg);
469 give_back_device_lock(dev, &hold);
473 static DEVICE *find_device(JCR *jcr, POOL_MEM &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.c_str()) == 0 && device->dev) {
483 Dmsg1(20, "Found device %s\n", device->hdr.name);
490 * ****FIXME***** device->dev may not point to right device
491 * if there are multiple devices open
493 jcr->dcr = new_dcr(jcr, device->dev);
495 jcr->dcr->device = device;
496 return jcr->dcr->dev;
504 * Mount command from Director
506 static bool mount_cmd(JCR *jcr)
509 BSOCK *dir = jcr->dir_bsock;
513 if (sscanf(dir->msg, "mount %127s", dname.c_str()) == 1) {
514 dev = find_device(jcr, dname);
517 P(dev->mutex); /* Use P to avoid indefinite block */
518 switch (dev->dev_blocked) { /* device blocked? */
519 case BST_WAITING_FOR_SYSOP:
520 /* Someone is waiting, wake him */
521 Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
522 dev->dev_blocked = BST_MOUNT;
523 bnet_fsend(dir, "3001 OK mount. Device=%s\n", dev_name(dev));
524 pthread_cond_signal(&dev->wait_next_vol);
527 /* In both of these two cases, we (the user) unmounted the Volume */
528 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
530 /* We freed the device, so reopen it and wake any waiting threads */
531 if (open_dev(dev, NULL, OPEN_READ_WRITE) < 0) {
532 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
536 read_dev_volume_label(dcr);
537 if (dev->dev_blocked == BST_UNMOUNTED) {
538 /* We blocked the device, so unblock it */
539 Dmsg0(100, "Unmounted. Unblocking device\n");
540 read_label(dcr); /* this should not be necessary */
543 Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
544 dev->dev_blocked = BST_MOUNT;
546 if (dev->is_labeled()) {
547 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
548 dev_name(dev), dev->VolHdr.VolName);
550 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
551 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
554 pthread_cond_signal(&dev->wait_next_vol);
557 case BST_DOING_ACQUIRE:
558 bnet_fsend(dir, _("3001 Device %s is mounted; doing acquire.\n"),
562 case BST_WRITING_LABEL:
563 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"), dev_name(dev));
566 case BST_NOT_BLOCKED:
567 if (dev->is_open()) {
568 if (dev->is_labeled()) {
569 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
570 dev_name(dev), dev->VolHdr.VolName);
572 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
573 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
577 if (!dev_is_tape(dev)) {
578 bnet_fsend(dir, _("3906 cannot mount non-tape.\n"));
581 if (open_dev(dev, NULL, OPEN_READ_WRITE) < 0) {
582 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
587 if (dev->is_labeled()) {
588 bnet_fsend(dir, _("3001 Device %s is already mounted with Volume \"%s\"\n"),
589 dev_name(dev), dev->VolHdr.VolName);
591 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
592 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
599 bnet_fsend(dir, _("3905 Bizarre wait state %d\n"), dev->dev_blocked);
604 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), dname.c_str());
607 pm_strcpy(jcr->errmsg, dir->msg);
608 bnet_fsend(dir, _("3909 Error scanning mount command: %s\n"), jcr->errmsg);
610 bnet_sig(dir, BNET_EOD);
615 * unmount command from Director
617 static bool unmount_cmd(JCR *jcr)
620 BSOCK *dir = jcr->dir_bsock;
623 if (sscanf(dir->msg, "unmount %127s", dname.c_str()) == 1) {
624 dev = find_device(jcr, dname);
626 P(dev->mutex); /* Use P to avoid indefinite block */
627 if (!dev->is_open()) {
628 Dmsg0(90, "Device already unmounted\n");
629 bnet_fsend(dir, _("3901 Device \"%s\" is already unmounted.\n"), dev_name(dev));
631 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP) {
632 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
634 open_dev(dev, NULL, 0); /* fake open for close */
635 offline_or_rewind_dev(dev);
636 force_close_dev(dev);
637 dev->dev_blocked = BST_UNMOUNTED_WAITING_FOR_SYSOP;
638 bnet_fsend(dir, _("3001 Device \"%s\" unmounted.\n"), dev_name(dev));
640 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
641 bnet_fsend(dir, _("3902 Device \"%s\" is busy in acquire.\n"), dev_name(dev));
643 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
644 bnet_fsend(dir, _("3903 Device \"%s\" is being labeled.\n"), dev_name(dev));
646 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
647 if (dev_state(dev, ST_READ)) {
648 Dmsg0(90, "Device in read mode\n");
649 bnet_fsend(dir, _("3904 Device \"%s\" is busy reading.\n"), dev_name(dev));
651 Dmsg1(90, "Device busy with %d writers\n", dev->num_writers);
652 bnet_fsend(dir, _("3905 Device %s is busy with %d writer(s).\n"),
653 dev_name(dev), dev->num_writers);
656 } else { /* device not being used */
657 Dmsg0(90, "Device not in use, unmounting\n");
658 /* On FreeBSD, I am having ASSERT() failures in block_device()
659 * and I can only imagine that the thread id that we are
660 * leaving in no_wait_id is being re-used. So here,
661 * we simply do it by hand. Gross, but a solution.
663 /* block_device(dev, BST_UNMOUNTED); replace with 2 lines below */
664 dev->dev_blocked = BST_UNMOUNTED;
666 open_dev(dev, NULL, 0); /* fake open for close */
667 offline_or_rewind_dev(dev);
668 force_close_dev(dev);
669 bnet_fsend(dir, _("3002 Device %s unmounted.\n"), dev_name(dev));
673 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), dname.c_str());
676 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
677 pm_strcpy(jcr->errmsg, dir->msg);
678 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 bool release_cmd(JCR *jcr)
694 BSOCK *dir = jcr->dir_bsock;
697 if (sscanf(dir->msg, "release %127s", dname.c_str()) == 1) {
698 dev = find_device(jcr, dname);
700 P(dev->mutex); /* Use P to avoid indefinite block */
701 if (!dev->is_open()) {
702 Dmsg0(90, "Device already released\n");
703 bnet_fsend(dir, _("3911 Device %s already released.\n"), dev_name(dev));
705 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
706 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP) {
707 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
709 bnet_fsend(dir, _("3912 Device %s waiting for mount.\n"), dev_name(dev));
711 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
712 bnet_fsend(dir, _("3913 Device %s is busy in acquire.\n"), dev_name(dev));
714 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
715 bnet_fsend(dir, _("3914 Device %s is being labeled.\n"), dev_name(dev));
717 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
718 if (dev_state(dev, ST_READ)) {
719 Dmsg0(90, "Device in read mode\n");
720 bnet_fsend(dir, _("3915 Device %s is busy with 1 reader.\n"), dev_name(dev));
722 Dmsg1(90, "Device busy with %d writers\n", dev->num_writers);
723 bnet_fsend(dir, _("3916 Device %s is busy with %d writer(s).\n"),
724 dev_name(dev), dev->num_writers);
727 } else { /* device not being used */
728 Dmsg0(90, "Device not in use, unmounting\n");
729 release_volume(jcr->dcr);
730 bnet_fsend(dir, _("3012 Device %s released.\n"), dev_name(dev));
734 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), dname.c_str());
737 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
738 pm_strcpy(jcr->errmsg, dir->msg);
739 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 bool autochanger_cmd(JCR *jcr)
753 BSOCK *dir = jcr->dir_bsock;
757 if (sscanf(dir->msg, "autochanger list %127s ", dname.c_str()) == 1) {
758 dev = find_device(jcr, dname);
761 P(dev->mutex); /* Use P to avoid indefinite block */
762 if (!dev_is_tape(dev)) {
763 bnet_fsend(dir, _("3995 Device %s is not an autochanger.\n"), dev_name(dev));
764 } else if (!dev->is_open()) {
765 autochanger_list(dcr, dir);
766 /* Under certain "safe" conditions, we can steal the lock */
767 } else if (dev->dev_blocked &&
768 (dev->dev_blocked == BST_UNMOUNTED ||
769 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
770 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
771 autochanger_list(dcr, dir);
772 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
773 if (dev_state(dev, ST_READ)) {
774 bnet_fsend(dir, _("3901 Device %s is busy with 1 reader.\n"), dev_name(dev));
776 bnet_fsend(dir, _("3902 Device %s is busy with %d writer(s).\n"),
777 dev_name(dev), dev->num_writers);
779 } else { /* device not being used */
780 autochanger_list(dcr, dir);
784 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), dname.c_str());
786 } else { /* error on scanf */
787 pm_strcpy(jcr->errmsg, dir->msg);
788 bnet_fsend(dir, _("3908 Error scanning autocharger list command: %s\n"),
791 bnet_sig(dir, BNET_EOD);
796 * Read and return the Volume label
798 static bool readlabel_cmd(JCR *jcr)
801 BSOCK *dir = jcr->dir_bsock;
805 if (sscanf(dir->msg, "readlabel %127s Slot=%d", dname.c_str(), &Slot) == 2) {
806 dev = find_device(jcr, dname);
808 P(dev->mutex); /* Use P to avoid indefinite block */
809 if (!dev->is_open()) {
810 read_volume_label(jcr, dev, Slot);
811 force_close_dev(dev);
812 /* Under certain "safe" conditions, we can steal the lock */
813 } else if (dev->dev_blocked &&
814 (dev->dev_blocked == BST_UNMOUNTED ||
815 dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
816 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
817 read_volume_label(jcr, dev, Slot);
818 } else if (dev_state(dev, ST_READ) || dev->num_writers) {
819 if (dev_state(dev, ST_READ)) {
820 bnet_fsend(dir, _("3911 Device %s is busy with 1 reader.\n"),
823 bnet_fsend(dir, _("3912 Device %s is busy with %d writer(s).\n"),
824 dev_name(dev), dev->num_writers);
826 } else { /* device not being used */
827 read_volume_label(jcr, dev, Slot);
831 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), dname.c_str());
834 pm_strcpy(jcr->errmsg, dir->msg);
835 bnet_fsend(dir, _("3909 Error scanning readlabel command: %s\n"), jcr->errmsg);
837 bnet_sig(dir, BNET_EOD);
842 * Read the tape label
844 * Enter with the mutex set
846 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot)
848 BSOCK *dir = jcr->dir_bsock;
853 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
855 if (!try_autoload_device(jcr, Slot, "")) {
856 goto bail_out; /* error */
859 dev->state &= ~ST_LABEL; /* force read of label */
860 switch (read_dev_volume_label(dcr)) {
862 /* DO NOT add quotes around the Volume name. It is scanned in the DIR */
863 bnet_fsend(dir, _("3001 Volume=%s Slot=%d\n"), dev->VolHdr.VolName, Slot);
864 Dmsg1(100, "Volume: %s\n", dev->VolHdr.VolName);
867 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device \"%s\" because:\n%s"),
868 dev_name(dev), jcr->errmsg);
873 give_back_device_lock(dev, &hold);
877 static bool try_autoload_device(JCR *jcr, int slot, const char *VolName)
880 BSOCK *dir = jcr->dir_bsock;
881 DEVICE *dev = dcr->dev;
883 bstrncpy(dcr->VolumeName, VolName, sizeof(dcr->VolumeName));
884 dcr->VolCatInfo.Slot = slot;
885 dcr->VolCatInfo.InChanger = slot > 0;
886 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
890 /* Ensure that the device is open -- autoload_device() closes it */
891 for ( ; !dev->is_open(); ) {
892 if (open_dev(dev, dcr->VolumeName, OPEN_READ_WRITE) < 0) {
893 bnet_fsend(dir, _("3910 Unable to open device %s. ERR=%s\n"),
894 dev_name(dev), dev->strerror());