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
26 version 2 as ammended with additional clauses defined in the
27 file LICENSE in the main source directory.
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
32 the file LICENSE for additional details.
39 /* Exported variables */
41 /* Imported variables */
42 extern BSOCK *filed_chan;
43 extern int r_first, r_last;
44 extern struct s_res resources[];
45 extern char my_name[];
46 extern time_t daemon_start_time;
47 extern struct s_last_job last_job;
49 /* Static variables */
50 static char derrmsg[] = "3900 Invalid command\n";
51 static char OKsetdebug[] = "3000 OK setdebug=%d\n";
52 static char illegal_cmd[] = "3997 Illegal command for a Director with Monitor directive enabled\n";
54 /* Imported functions */
55 extern void terminate_child();
56 extern bool job_cmd(JCR *jcr);
57 extern bool use_cmd(JCR *jcr);
58 extern bool run_cmd(JCR *jcr);
59 extern bool status_cmd(JCR *sjcr);
60 extern bool qstatus_cmd(JCR *jcr);
61 //extern bool query_cmd(JCR *jcr);
63 /* Forward referenced functions */
64 static bool label_cmd(JCR *jcr);
65 static bool relabel_cmd(JCR *jcr);
66 static bool readlabel_cmd(JCR *jcr);
67 static bool release_cmd(JCR *jcr);
68 static bool setdebug_cmd(JCR *jcr);
69 static bool cancel_cmd(JCR *cjcr);
70 static bool mount_cmd(JCR *jcr);
71 static bool unmount_cmd(JCR *jcr);
72 static bool autochanger_cmd(JCR *sjcr);
73 static bool do_label(JCR *jcr, int relabel);
74 static DEVICE *find_device(JCR *jcr, POOL_MEM &dev_name);
75 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot);
76 static void label_volume_if_ok(JCR *jcr, DEVICE *dev, char *oldname,
77 char *newname, char *poolname,
78 int Slot, int relabel);
79 static bool try_autoload_device(JCR *jcr, int slot, const char *VolName);
80 static void send_dir_busy_message(BSOCK *dir, DEVICE *dev);
84 bool (*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 {"autochanger", autochanger_cmd, 0},
94 {"bootstrap", bootstrap_cmd, 0},
95 {"cancel", cancel_cmd, 0},
96 {"label", label_cmd, 0}, /* label a tape */
97 {"mount", mount_cmd, 0},
98 {"readlabel", readlabel_cmd, 0},
99 {"release", release_cmd, 0},
100 {"relabel", relabel_cmd, 0}, /* relabel a tape */
101 {"setdebug=", setdebug_cmd, 0}, /* set debug level */
102 {"status", status_cmd, 1},
103 {".status", qstatus_cmd, 1},
104 {"unmount", unmount_cmd, 0},
105 {"use storage=", use_cmd, 0},
107 // {"query", query_cmd, 0},
108 {NULL, NULL} /* list terminator */
113 * Connection request. We accept connections either from the
114 * Director or a Client (File daemon).
116 * Note, we are running as a seperate thread of the Storage daemon.
117 * and it is because a Director has made a connection with
118 * us on the "Message" channel.
120 * Basic tasks done here:
121 * - Create a JCR record
122 * - If it was from the FD, call handle_filed_connection()
123 * - Authenticate the Director
124 * - We wait for a command
125 * - We execute the command
126 * - We continue or exit depending on the return status
128 void *handle_connection_request(void *arg)
130 BSOCK *bs = (BSOCK *)arg;
135 char name[MAX_NAME_LENGTH];
137 if (bnet_recv(bs) <= 0) {
138 Emsg0(M_ERROR, 0, _("Connection request failed.\n"));
144 * Do a sanity check on the message received
146 if (bs->msglen < 25 || bs->msglen > (int)sizeof(name)-25) {
147 Emsg1(M_ERROR, 0, _("Invalid connection. Len=%d\n"), bs->msglen);
152 * See if this is a File daemon connection. If so
155 Dmsg1(110, "Conn: %s", bs->msg);
156 if (sscanf(bs->msg, "Hello Start Job %127s", name) == 1) {
157 handle_filed_connection(bs, name);
162 * This is a connection from the Director, so setup a JCR
164 Dmsg0(110, "Start Dir Job\n");
165 jcr = new_jcr(sizeof(JCR), stored_free_jcr); /* create Job Control Record */
166 jcr->dir_bsock = bs; /* save Director bsock */
167 jcr->dir_bsock->jcr = jcr;
168 jcr->dcrs = New(alist(10, not_owned_by_alist));
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 generate_daemon_event(jcr, "JobEnd");
218 dequeue_messages(jcr); /* send any queued messages */
219 bnet_sig(bs, BNET_TERMINATE);
225 * Set debug level as requested by the Director
228 static bool setdebug_cmd(JCR *jcr)
230 BSOCK *dir = jcr->dir_bsock;
231 int level, trace_flag;
233 Dmsg1(10, "setdebug_cmd: %s", dir->msg);
234 if (sscanf(dir->msg, "setdebug=%d trace=%d", &level, &trace_flag) != 2 || level < 0) {
235 bnet_fsend(dir, "3991 Bad setdebug command: %s\n", dir->msg);
239 set_trace(trace_flag);
240 return bnet_fsend(dir, OKsetdebug, level);
247 static bool cancel_cmd(JCR *cjcr)
249 BSOCK *dir = cjcr->dir_bsock;
251 char Job[MAX_NAME_LENGTH];
254 if (sscanf(dir->msg, "cancel Job=%127s", Job) == 1) {
255 if (!(jcr=get_jcr_by_full_name(Job))) {
256 bnet_fsend(dir, _("3902 Job %s not found.\n"), Job);
259 oldStatus = jcr->JobStatus;
260 set_jcr_job_status(jcr, JS_Canceled);
261 if (!jcr->authenticated && oldStatus == JS_WaitFD) {
262 pthread_cond_signal(&jcr->job_start_wait); /* wake waiting thread */
265 if (jcr->file_bsock) {
266 bnet_sig(jcr->file_bsock, BNET_TERMINATE);
268 /* If thread waiting on mount, wake him */
269 if (jcr->dcr && jcr->dcr->dev && jcr->dcr->dev->waiting_for_mount()) {
270 pthread_cond_signal(&jcr->dcr->dev->wait_next_vol);
271 pthread_cond_broadcast(&wait_device_release);
273 bnet_fsend(dir, _("3000 Job %s marked to be canceled.\n"), jcr->Job);
277 bnet_fsend(dir, _("3903 Error scanning cancel command.\n"));
279 bnet_sig(dir, BNET_EOD);
287 static bool label_cmd(JCR *jcr)
289 return do_label(jcr, 0);
292 static bool relabel_cmd(JCR *jcr)
294 return do_label(jcr, 1);
297 static bool do_label(JCR *jcr, int relabel)
299 POOLMEM *newname, *oldname, *poolname, *mtype;
301 BSOCK *dir = jcr->dir_bsock;
306 newname = get_memory(dir->msglen+1);
307 oldname = get_memory(dir->msglen+1);
308 poolname = get_memory(dir->msglen+1);
309 mtype = get_memory(dir->msglen+1);
311 if (sscanf(dir->msg, "relabel %127s OldName=%127s NewName=%127s PoolName=%127s MediaType=%127s Slot=%d",
312 dev_name.c_str(), oldname, newname, poolname, mtype, &slot) == 6) {
317 if (sscanf(dir->msg, "label %127s VolumeName=%127s PoolName=%127s MediaType=%127s Slot=%d",
318 dev_name.c_str(), newname, poolname, mtype, &slot) == 5) {
323 unbash_spaces(newname);
324 unbash_spaces(oldname);
325 unbash_spaces(poolname);
326 unbash_spaces(mtype);
327 dev = find_device(jcr, dev_name);
329 P(dev->mutex); /* Use P to avoid indefinite block */
330 if (!dev->is_open()) {
331 Dmsg0(400, "Can relabel. Device is not open\n");
332 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
333 force_close_device(dev);
334 /* Under certain "safe" conditions, we can steal the lock */
335 } else if (dev->can_steal_lock()) {
336 Dmsg0(400, "Can relabel. can_steal_lock\n");
337 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
338 } else if (dev->is_busy() || dev->is_blocked()) {
339 send_dir_busy_message(dir, dev);
340 } else { /* device not being used */
341 Dmsg0(400, "Can relabel. device not used\n");
342 label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
346 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), dev_name.c_str());
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);
353 free_memory(oldname);
354 free_memory(newname);
355 free_memory(poolname);
357 bnet_sig(dir, BNET_EOD);
362 * Read the tape label and determine if we can safely
363 * label the tape (not a Bacula volume), then label it.
365 * Enter with the mutex set
367 static void label_volume_if_ok(JCR *jcr, DEVICE *dev, char *oldname,
368 char *newname, char *poolname,
369 int slot, int relabel)
371 BSOCK *dir = jcr->dir_bsock;
377 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
378 Dmsg1(100, "Stole device %s lock, writing label.\n", dev->print_name());
380 /* Note, try_autoload_device() opens the device */
381 if (!try_autoload_device(jcr, slot, newname)) {
382 goto bail_out; /* error */
385 /* See what we have for a Volume */
386 label_status = read_dev_volume_label(dcr);
388 switch(label_status) {
390 case VOL_VERSION_ERROR:
391 case VOL_LABEL_ERROR:
395 "3920 Cannot label Volume because it is already labeled: \"%s\"\n"),
396 dev->VolHdr.VolumeName);
399 /* Relabel request. If oldname matches, continue */
400 if (strcmp(oldname, dev->VolHdr.VolumeName) != 0) {
401 bnet_fsend(dir, _("3921 Wrong volume mounted.\n"));
404 if (dev->label_type != B_BACULA_LABEL) {
405 bnet_fsend(dir, _("3922 Cannot relabel an ANSI/IBM labeled Volume.\n"));
408 free_volume(dev); /* release old volume name */
409 /* Fall through wanted! */
412 if (!write_new_volume_label_to_dev(dcr, newname, poolname)) {
413 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
416 bstrncpy(dcr->VolumeName, newname, sizeof(dcr->VolumeName));
417 /* The following 3000 OK label. string is scanned in ua_label.c */
418 bnet_fsend(dir, "3000 OK label. Volume=%s Device=%s\n",
419 newname, dev->print_name());
422 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
425 bnet_fsend(dir, _("3913 Cannot label Volume. "
426 "Unknown status %d from read_volume_label()\n"), label_status);
431 if (!dev->is_open()) {
434 give_back_device_lock(dev, &hold);
440 * Read the tape label
442 * Enter with the mutex set
444 static bool read_label(DCR *dcr)
448 BSOCK *dir = jcr->dir_bsock;
450 DEVICE *dev = dcr->dev;
452 steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
454 dcr->VolumeName[0] = 0;
455 dev->clear_labeled(); /* force read of label */
456 switch (read_dev_volume_label(dcr)) {
458 bnet_fsend(dir, _("3001 Mounted Volume: %s\n"), dev->VolHdr.VolumeName);
462 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
463 dev->print_name(), jcr->errmsg);
467 give_back_device_lock(dev, &hold);
471 static DEVICE *find_device(JCR *jcr, POOL_MEM &devname)
474 AUTOCHANGER *changer;
477 unbash_spaces(devname);
479 foreach_res(device, R_DEVICE) {
480 /* Find resource, and make sure we were able to open it */
481 if (fnmatch(device->hdr.name, devname.c_str(), 0) == 0) {
483 device->dev = init_dev(jcr, device);
486 Jmsg(jcr, M_WARNING, 0, _("\n"
487 " Device \"%s\" requested by DIR could not be opened or does not exist.\n"),
491 Dmsg1(20, "Found device %s\n", device->hdr.name);
496 foreach_res(changer, R_AUTOCHANGER) {
497 /* Find resource, and make sure we were able to open it */
498 if (fnmatch(devname.c_str(), changer->hdr.name, 0) == 0) {
499 /* Try each device in this AutoChanger */
500 foreach_alist(device, changer->device) {
501 Dmsg1(100, "Try changer device %s\n", device->hdr.name);
503 device->dev = init_dev(jcr, device);
506 Dmsg1(100, "Device %s could not be opened. Skipped\n", devname.c_str());
507 Jmsg(jcr, M_WARNING, 0, _("\n"
508 " Device \"%s\" in changer \"%s\" requested by DIR could not be opened or does not exist.\n"),
509 device->hdr.name, devname.c_str());
512 if (!device->dev->autoselect) {
513 continue; /* device is not available */
515 Dmsg1(20, "Found changer device %s\n", device->hdr.name);
519 break; /* we found it but could not open a device */
524 jcr->dcr = new_dcr(jcr, device->dev);
526 jcr->dcr->device = device;
527 return jcr->dcr->dev;
535 * Mount command from Director
537 static bool mount_cmd(JCR *jcr)
540 BSOCK *dir = jcr->dir_bsock;
544 if (sscanf(dir->msg, "mount %127s", devname.c_str()) == 1) {
545 dev = find_device(jcr, devname);
548 P(dev->mutex); /* Use P to avoid indefinite block */
549 switch (dev->dev_blocked) { /* device blocked? */
550 case BST_WAITING_FOR_SYSOP:
551 /* Someone is waiting, wake him */
552 Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
553 dev->dev_blocked = BST_MOUNT;
554 bnet_fsend(dir, "3001 OK mount. Device=%s\n",
556 pthread_cond_broadcast(&dev->wait_next_vol);
557 pthread_cond_broadcast(&wait_device_release);
560 /* In both of these two cases, we (the user) unmounted the Volume */
561 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
563 /* We freed the device, so reopen it and wake any waiting threads */
564 if (dev->open(dcr, OPEN_READ_WRITE) < 0) {
565 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
569 read_dev_volume_label(dcr);
570 if (dev->dev_blocked == BST_UNMOUNTED) {
571 /* We blocked the device, so unblock it */
572 Dmsg0(100, "Unmounted. Unblocking device\n");
573 read_label(dcr); /* this should not be necessary */
576 Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
577 dev->dev_blocked = BST_MOUNT;
579 if (dev->is_labeled()) {
580 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
581 dev->print_name(), dev->VolHdr.VolumeName);
583 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
584 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
587 pthread_cond_broadcast(&dev->wait_next_vol);
588 pthread_cond_broadcast(&wait_device_release);
591 case BST_DOING_ACQUIRE:
592 bnet_fsend(dir, _("3001 Device %s is doing acquire.\n"),
596 case BST_WRITING_LABEL:
597 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
601 case BST_NOT_BLOCKED:
602 if (dev->is_open()) {
603 if (dev->is_labeled()) {
604 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
605 dev->print_name(), dev->VolHdr.VolumeName);
607 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
608 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
611 } else if (dev->is_tape()) {
612 if (dev->open(NULL, OPEN_READ_WRITE) < 0) {
613 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
618 if (dev->is_labeled()) {
619 bnet_fsend(dir, _("3001 Device %s is already mounted with Volume \"%s\"\n"),
620 dev->print_name(), dev->VolHdr.VolumeName);
622 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
623 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
626 } else if (dev->is_dvd()) {
627 if (mount_dev(dev, 1)) {
628 bnet_fsend(dir, _("3002 Device %s is mounted.\n"),
631 bnet_fsend(dir, "3907 %s", strerror_dev(dev));
633 } else { /* must be file */
634 bnet_fsend(dir, _("3906 File device %s is always mounted.\n"),
640 bnet_fsend(dir, _("3905 Bizarre wait state %d\n"), dev->dev_blocked);
645 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), devname.c_str());
648 pm_strcpy(jcr->errmsg, dir->msg);
649 bnet_fsend(dir, _("3909 Error scanning mount command: %s\n"), jcr->errmsg);
651 bnet_sig(dir, BNET_EOD);
656 * unmount command from Director
658 static bool unmount_cmd(JCR *jcr)
661 BSOCK *dir = jcr->dir_bsock;
664 if (sscanf(dir->msg, "unmount %127s", devname.c_str()) == 1) {
665 dev = find_device(jcr, devname);
667 P(dev->mutex); /* Use P to avoid indefinite block */
668 if (!dev->is_open()) {
669 Dmsg0(90, "Device already unmounted\n");
670 bnet_fsend(dir, _("3901 Device %s is already unmounted.\n"),
673 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP) {
674 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
676 offline_or_rewind_dev(dev);
677 force_close_device(dev);
678 dev->dev_blocked = BST_UNMOUNTED_WAITING_FOR_SYSOP;
679 bnet_fsend(dir, _("3001 Device %s unmounted.\n"),
682 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
683 bnet_fsend(dir, _("3902 Device %s is busy in acquire.\n"),
686 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
687 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
690 } else if (dev->is_busy()) {
691 send_dir_busy_message(dir, dev);
692 } else { /* device not being used */
693 Dmsg0(90, "Device not in use, unmounting\n");
694 /* On FreeBSD, I am having ASSERT() failures in block_device()
695 * and I can only imagine that the thread id that we are
696 * leaving in no_wait_id is being re-used. So here,
697 * we simply do it by hand. Gross, but a solution.
699 /* block_device(dev, BST_UNMOUNTED); replace with 2 lines below */
700 dev->dev_blocked = BST_UNMOUNTED;
702 offline_or_rewind_dev(dev);
703 force_close_device(dev);
704 bnet_fsend(dir, _("3002 Device %s unmounted.\n"),
709 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), devname.c_str());
712 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
713 pm_strcpy(jcr->errmsg, dir->msg);
714 bnet_fsend(dir, _("3907 Error scanning unmount command: %s\n"), jcr->errmsg);
716 bnet_sig(dir, BNET_EOD);
721 * Release command from Director. This rewinds the device and if
722 * configured does a offline and ensures that Bacula will
723 * re-read the label of the tape before continuing. This gives
724 * the operator the chance to change the tape anytime before the
727 static bool release_cmd(JCR *jcr)
730 BSOCK *dir = jcr->dir_bsock;
733 if (sscanf(dir->msg, "release %127s", devname.c_str()) == 1) {
734 dev = find_device(jcr, devname);
736 P(dev->mutex); /* Use P to avoid indefinite block */
737 if (!dev->is_open()) {
738 Dmsg0(90, "Device already released\n");
739 bnet_fsend(dir, _("3911 Device %s already released.\n"),
742 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
743 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP) {
744 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
746 bnet_fsend(dir, _("3912 Device %s waiting for mount.\n"),
749 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
750 bnet_fsend(dir, _("3913 Device %s is busy in acquire.\n"),
753 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
754 bnet_fsend(dir, _("3914 Device %s is being labeled.\n"),
757 } else if (dev->is_busy()) {
758 send_dir_busy_message(dir, dev);
759 } else { /* device not being used */
760 Dmsg0(90, "Device not in use, unmounting\n");
761 release_volume(jcr->dcr);
762 bnet_fsend(dir, _("3012 Device %s released.\n"),
767 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), devname.c_str());
770 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
771 pm_strcpy(jcr->errmsg, dir->msg);
772 bnet_fsend(dir, _("3917 Error scanning release command: %s\n"), jcr->errmsg);
774 bnet_sig(dir, BNET_EOD);
781 * Autochanger command from Director
783 static bool autochanger_cmd(JCR *jcr)
786 BSOCK *dir = jcr->dir_bsock;
789 const char *cmd = NULL;
792 if (sscanf(dir->msg, "autochanger list %127s ", devname.c_str()) == 1) {
795 } else if (sscanf(dir->msg, "autochanger slots %127s ", devname.c_str()) == 1) {
800 dev = find_device(jcr, devname);
803 P(dev->mutex); /* Use P to avoid indefinite block */
804 if (!dev->is_tape()) {
805 bnet_fsend(dir, _("3995 Device %s is not an autochanger.\n"),
807 } else if (!dev->is_open()) {
808 autochanger_cmd(dcr, dir, cmd);
809 /* Under certain "safe" conditions, we can steal the lock */
810 } else if (dev->can_steal_lock()) {
811 autochanger_cmd(dcr, dir, cmd);
812 } else if (dev->is_busy()) {
813 send_dir_busy_message(dir, dev);
814 } else { /* device not being used */
815 autochanger_cmd(dcr, dir, cmd);
819 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), devname.c_str());
821 } else { /* error on scanf */
822 pm_strcpy(jcr->errmsg, dir->msg);
823 bnet_fsend(dir, _("3908 Error scanning autocharger list/slots command: %s\n"),
826 bnet_sig(dir, BNET_EOD);
831 * Read and return the Volume label
833 static bool readlabel_cmd(JCR *jcr)
836 BSOCK *dir = jcr->dir_bsock;
840 if (sscanf(dir->msg, "readlabel %127s Slot=%d", devname.c_str(), &Slot) == 2) {
841 dev = find_device(jcr, devname);
843 P(dev->mutex); /* Use P to avoid indefinite block */
844 if (!dev->is_open()) {
845 read_volume_label(jcr, dev, Slot);
846 force_close_device(dev);
847 /* Under certain "safe" conditions, we can steal the lock */
848 } else if (dev->can_steal_lock()) {
849 read_volume_label(jcr, dev, Slot);
850 } else if (dev->is_busy()) {
851 send_dir_busy_message(dir, dev);
852 } else { /* device not being used */
853 read_volume_label(jcr, dev, Slot);
857 bnet_fsend(dir, _("3999 Device \"%s\" not found\n"), devname.c_str());
860 pm_strcpy(jcr->errmsg, dir->msg);
861 bnet_fsend(dir, _("3909 Error scanning readlabel command: %s\n"), jcr->errmsg);
863 bnet_sig(dir, BNET_EOD);
868 * Read the tape label
870 * Enter with the mutex set
872 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot)
874 BSOCK *dir = jcr->dir_bsock;
879 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
881 if (!try_autoload_device(jcr, Slot, "")) {
882 goto bail_out; /* error */
885 dev->clear_labeled(); /* force read of label */
886 switch (read_dev_volume_label(dcr)) {
888 /* DO NOT add quotes around the Volume name. It is scanned in the DIR */
889 bnet_fsend(dir, _("3001 Volume=%s Slot=%d\n"), dev->VolHdr.VolumeName, Slot);
890 Dmsg1(100, "Volume: %s\n", dev->VolHdr.VolumeName);
893 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
894 dev->print_name(), jcr->errmsg);
899 give_back_device_lock(dev, &hold);
903 static bool try_autoload_device(JCR *jcr, int slot, const char *VolName)
906 BSOCK *dir = jcr->dir_bsock;
907 DEVICE *dev = dcr->dev;
909 bstrncpy(dcr->VolumeName, VolName, sizeof(dcr->VolumeName));
910 dcr->VolCatInfo.Slot = slot;
911 dcr->VolCatInfo.InChanger = slot > 0;
912 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
916 /* Ensure that the device is open -- autoload_device() closes it */
917 for ( ; !dev->is_open(); ) {
918 if (dev->open(dcr, OPEN_READ_WRITE) < 0) {
919 bnet_fsend(dir, _("3910 Unable to open device %s: ERR=%s\n"),
920 dev->print_name(), dev->strerror());
927 static void send_dir_busy_message(BSOCK *dir, DEVICE *dev)
929 if (dev->can_read()) {
930 bnet_fsend(dir, _("3911 Device %s is busy reading.\n"),
933 bnet_fsend(dir, _("3912 Device %s is busy with %d writer(s).\n"),
934 dev->print_name(), dev->num_writers);