2 Bacula® - The Network Backup Solution
4 Copyright (C) 2001-2007 Free Software Foundation Europe e.V.
6 The main author of Bacula is Kern Sibbald, with contributions from
7 many others, a complete list can be found in the file AUTHORS.
8 This program is Free Software; you can redistribute it and/or
9 modify it under the terms of version two of the GNU General Public
10 License as published by the Free Software Foundation plus additions
11 that are listed in the file LICENSE.
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 Bacula® is a registered trademark of John Walker.
24 The licensor of Bacula is the Free Software Foundation Europe
25 (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
26 Switzerland, email:ftf@fsfeurope.org.
29 * This file handles accepting Director Commands
31 * Most Director commands are handled here, with the
32 * exception of the Job command command and subsequent
33 * subcommands that are handled
36 * N.B. in this file, in general we must use P(dev->mutex) rather
37 * than dev->r_lock() so that we can examine the blocked
38 * state rather than blocking ourselves because a Job
39 * thread has the device blocked. In some "safe" cases,
40 * we can do things to a blocked device. CAREFUL!!!!
42 * File daemon commands are handled in fdcmd.c
44 * Kern Sibbald, May MMI
53 /* Exported variables */
55 /* Imported variables */
56 extern BSOCK *filed_chan;
57 extern int r_first, r_last;
58 extern struct s_res resources[];
59 extern struct s_last_job last_job;
60 extern bool init_done;
62 /* Static variables */
63 static char derrmsg[] = "3900 Invalid command\n";
64 static char OKsetdebug[] = "3000 OK setdebug=%d\n";
65 static char invalid_cmd[] = "3997 Invalid command for a Director with Monitor directive enabled.\n";
67 /* Imported functions */
68 extern void terminate_child();
69 extern bool job_cmd(JCR *jcr);
70 extern bool use_cmd(JCR *jcr);
71 extern bool run_cmd(JCR *jcr);
72 extern bool status_cmd(JCR *sjcr);
73 extern bool qstatus_cmd(JCR *jcr);
74 //extern bool query_cmd(JCR *jcr);
76 /* Forward referenced functions */
77 static bool label_cmd(JCR *jcr);
78 static bool die_cmd(JCR *jcr);
79 static bool relabel_cmd(JCR *jcr);
80 static bool readlabel_cmd(JCR *jcr);
81 static bool release_cmd(JCR *jcr);
82 static bool setdebug_cmd(JCR *jcr);
83 static bool cancel_cmd(JCR *cjcr);
84 static bool mount_cmd(JCR *jcr);
85 static bool unmount_cmd(JCR *jcr);
86 static bool bootstrap_cmd(JCR *jcr);
87 static bool changer_cmd(JCR *sjcr);
88 static bool do_label(JCR *jcr, int relabel);
89 static DCR *find_device(JCR *jcr, POOL_MEM &dev_name, int drive);
90 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot);
91 static void label_volume_if_ok(DCR *dcr, char *oldname,
92 char *newname, char *poolname,
93 int Slot, int relabel);
94 static bool try_autoload_device(JCR *jcr, int slot, const char *VolName);
95 static void send_dir_busy_message(BSOCK *dir, DEVICE *dev);
99 bool (*func)(JCR *jcr);
100 int monitoraccess; /* specify if monitors have access to this function */
104 * The following are the recognized commands from the Director.
106 static struct s_cmds cmds[] = {
107 {"JobId=", job_cmd, 0}, /* start Job */
108 {"autochanger", changer_cmd, 0},
109 {"bootstrap", bootstrap_cmd, 0},
110 {"cancel", cancel_cmd, 0},
111 {".die", die_cmd, 0},
112 {"label", label_cmd, 0}, /* label a tape */
113 {"mount", mount_cmd, 0},
114 {"readlabel", readlabel_cmd, 0},
115 {"release", release_cmd, 0},
116 {"relabel", relabel_cmd, 0}, /* relabel a tape */
117 {"setdebug=", setdebug_cmd, 0}, /* set debug level */
118 {"status", status_cmd, 1},
119 {".status", qstatus_cmd, 1},
120 {"unmount", unmount_cmd, 0},
121 {"use storage=", use_cmd, 0},
123 // {"query", query_cmd, 0},
124 {NULL, NULL} /* list terminator */
129 * Connection request. We accept connections either from the
130 * Director or a Client (File daemon).
132 * Note, we are running as a seperate thread of the Storage daemon.
133 * and it is because a Director has made a connection with
134 * us on the "Message" channel.
136 * Basic tasks done here:
137 * - Create a JCR record
138 * - If it was from the FD, call handle_filed_connection()
139 * - Authenticate the Director
140 * - We wait for a command
141 * - We execute the command
142 * - We continue or exit depending on the return status
144 void *handle_connection_request(void *arg)
146 BSOCK *bs = (BSOCK *)arg;
151 char name[MAX_NAME_LENGTH];
153 if (bs->recv() <= 0) {
154 Emsg0(M_ERROR, 0, _("Connection request failed.\n"));
160 * Do a sanity check on the message received
162 if (bs->msglen < 25 || bs->msglen > (int)sizeof(name)-25) {
163 Emsg1(M_ERROR, 0, _("Invalid connection. Len=%d\n"), bs->msglen);
168 * See if this is a File daemon connection. If so
171 Dmsg1(110, "Conn: %s", bs->msg);
172 if (sscanf(bs->msg, "Hello Start Job %127s", name) == 1) {
173 Dmsg0(110, "Got a FD connection\n");
174 handle_filed_connection(bs, name);
179 * This is a connection from the Director, so setup a JCR
181 Dmsg0(110, "Got a DIR connection\n");
182 jcr = new_jcr(sizeof(JCR), stored_free_jcr); /* create Job Control Record */
183 jcr->dir_bsock = bs; /* save Director bsock */
184 jcr->dir_bsock->set_jcr(jcr);
185 jcr->dcrs = New(alist(10, not_owned_by_alist));
186 /* Initialize FD start condition variable */
187 int errstat = pthread_cond_init(&jcr->job_start_wait, NULL);
189 Jmsg1(jcr, M_FATAL, 0, _("Unable to init job cond variable: ERR=%s\n"), strerror(errstat));
193 Dmsg0(1000, "stored in start_job\n");
196 * Authenticate the Director
198 if (!authenticate_director(jcr)) {
199 Jmsg(jcr, M_FATAL, 0, _("Unable to authenticate Director\n"));
202 Dmsg0(90, "Message channel init completed.\n");
204 for (quit=false; !quit;) {
206 if ((bnet_stat = bs->recv()) <= 0) {
207 break; /* connection terminated */
209 Dmsg1(199, "<dird: %s\n", bs->msg);
210 /* Ensure that device initialization is complete */
215 for (i=0; cmds[i].cmd; i++) {
216 if (strncmp(cmds[i].cmd, bs->msg, strlen(cmds[i].cmd)) == 0) {
217 if ((!cmds[i].monitoraccess) && (jcr->director->monitor)) {
218 Dmsg1(100, "Command \"%s\" is invalid.\n", cmds[i].cmd);
219 bnet_fsend(bs, invalid_cmd);
220 bs->signal(BNET_EOD);
223 Dmsg1(200, "Do command: %s\n", cmds[i].cmd);
224 if (!cmds[i].func(jcr)) { /* do command */
225 quit = true; /* error, get out */
226 Dmsg1(190, "Command %s reqeusts quit\n", cmds[i].cmd);
228 found = true; /* indicate command found */
232 if (!found) { /* command not found */
233 bnet_fsend(bs, derrmsg);
238 generate_daemon_event(jcr, "JobEnd");
239 dequeue_messages(jcr); /* send any queued messages */
240 bnet_sig(bs, BNET_TERMINATE);
247 * Force SD to die, and hopefully dump itself. Turned on only
248 * in development version.
250 static bool die_cmd(JCR *jcr)
255 Pmsg0(000, "I have been requested to die ...");
256 a = djcr->JobId; /* ref NULL pointer */
264 * Set debug level as requested by the Director
267 static bool setdebug_cmd(JCR *jcr)
269 BSOCK *dir = jcr->dir_bsock;
270 int level, trace_flag;
272 Dmsg1(10, "setdebug_cmd: %s", dir->msg);
273 if (sscanf(dir->msg, "setdebug=%d trace=%d", &level, &trace_flag) != 2 || level < 0) {
274 bnet_fsend(dir, _("3991 Bad setdebug command: %s\n"), dir->msg);
278 set_trace(trace_flag);
279 return bnet_fsend(dir, OKsetdebug, level);
286 static bool cancel_cmd(JCR *cjcr)
288 BSOCK *dir = cjcr->dir_bsock;
290 char Job[MAX_NAME_LENGTH];
293 if (sscanf(dir->msg, "cancel Job=%127s", Job) == 1) {
294 if (!(jcr=get_jcr_by_full_name(Job))) {
295 bnet_fsend(dir, _("3904 Job %s not found.\n"), Job);
298 oldStatus = jcr->JobStatus;
299 set_jcr_job_status(jcr, JS_Canceled);
300 if (!jcr->authenticated && oldStatus == JS_WaitFD) {
301 pthread_cond_signal(&jcr->job_start_wait); /* wake waiting thread */
304 if (jcr->file_bsock) {
305 bnet_sig(jcr->file_bsock, BNET_TERMINATE);
307 /* If thread waiting on mount, wake him */
308 if (jcr->dcr && jcr->dcr->dev && jcr->dcr->dev->waiting_for_mount()) {
309 pthread_cond_broadcast(&jcr->dcr->dev->wait_next_vol);
310 pthread_cond_broadcast(&wait_device_release);
312 if (jcr->read_dcr && jcr->read_dcr->dev && jcr->read_dcr->dev->waiting_for_mount()) {
313 pthread_cond_broadcast(&jcr->read_dcr->dev->wait_next_vol);
314 pthread_cond_broadcast(&wait_device_release);
316 Jmsg(jcr, M_INFO, 0, _("Job %s marked to be canceled.\n"), jcr->Job);
317 bnet_fsend(dir, _("3000 Job %s marked to be canceled.\n"), jcr->Job);
321 bnet_fsend(dir, _("3903 Error scanning cancel command.\n"));
323 bnet_sig(dir, BNET_EOD);
331 static bool label_cmd(JCR *jcr)
333 return do_label(jcr, 0);
336 static bool relabel_cmd(JCR *jcr)
338 return do_label(jcr, 1);
341 static bool do_label(JCR *jcr, int relabel)
343 POOLMEM *newname, *oldname, *poolname, *mtype;
345 BSOCK *dir = jcr->dir_bsock;
352 newname = get_memory(dir->msglen+1);
353 oldname = get_memory(dir->msglen+1);
354 poolname = get_memory(dir->msglen+1);
355 mtype = get_memory(dir->msglen+1);
357 if (sscanf(dir->msg, "relabel %127s OldName=%127s NewName=%127s PoolName=%127s "
358 "MediaType=%127s Slot=%d drive=%d",
359 dev_name.c_str(), oldname, newname, poolname, mtype,
360 &slot, &drive) == 7) {
365 if (sscanf(dir->msg, "label %127s VolumeName=%127s PoolName=%127s "
366 "MediaType=%127s Slot=%d drive=%d",
367 dev_name.c_str(), newname, poolname, mtype, &slot, &drive) == 6) {
372 unbash_spaces(newname);
373 unbash_spaces(oldname);
374 unbash_spaces(poolname);
375 unbash_spaces(mtype);
376 dcr = find_device(jcr, dev_name, drive);
379 dev->dlock(); /* Use P to avoid indefinite block */
380 if (!dev->is_open()) {
381 Dmsg1(400, "Can %slabel. Device is not open\n", relabel?"re":"");
382 label_volume_if_ok(dcr, oldname, newname, poolname, slot, relabel);
384 /* Under certain "safe" conditions, we can steal the lock */
385 } else if (dev->can_steal_lock()) {
386 Dmsg0(400, "Can relabel. can_steal_lock\n");
387 label_volume_if_ok(dcr, oldname, newname, poolname, slot, relabel);
388 } else if (dev->is_busy() || dev->is_blocked()) {
389 send_dir_busy_message(dir, dev);
390 } else { /* device not being used */
391 Dmsg0(400, "Can relabel. device not used\n");
392 label_volume_if_ok(dcr, oldname, newname, poolname, slot, relabel);
398 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), dev_name.c_str());
401 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
402 pm_strcpy(jcr->errmsg, dir->msg);
403 bnet_fsend(dir, _("3903 Error scanning label command: %s\n"), jcr->errmsg);
405 free_memory(oldname);
406 free_memory(newname);
407 free_memory(poolname);
409 bnet_sig(dir, BNET_EOD);
414 * Read the tape label and determine if we can safely
415 * label the tape (not a Bacula volume), then label it.
417 * Enter with the mutex set
419 static void label_volume_if_ok(DCR *dcr, char *oldname,
420 char *newname, char *poolname,
421 int slot, int relabel)
423 BSOCK *dir = dcr->jcr->dir_bsock;
425 DEVICE *dev = dcr->dev;
428 const char *volname = (relabel == 1) ? oldname : newname;
431 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
432 Dmsg1(100, "Stole device %s lock, writing label.\n", dev->print_name());
435 Dmsg0(90, "try_autoload_device - looking for volume_info\n");
436 if (!try_autoload_device(dcr->jcr, slot, volname)) {
437 goto bail_out; /* error */
440 /* Ensure that the device is open -- autoload_device() closes it */
441 if (dev->is_tape()) {
442 mode = OPEN_READ_WRITE;
444 mode = CREATE_READ_WRITE;
448 dev->truncating = true; /* let open() know we will truncate it */
450 /* Set old volume name for open if relabeling */
451 bstrncpy(dcr->VolCatInfo.VolCatName, volname, sizeof(dcr->VolCatInfo.VolCatName));
452 if (dev->open(dcr, mode) < 0) {
453 bnet_fsend(dir, _("3910 Unable to open device %s: ERR=%s\n"),
454 dev->print_name(), dev->strerror());
458 /* See what we have for a Volume */
459 label_status = read_dev_volume_label(dcr);
461 /* Set new volume name */
462 bstrncpy(dcr->VolCatInfo.VolCatName, newname, sizeof(dcr->VolCatInfo.VolCatName));
463 switch(label_status) {
465 case VOL_VERSION_ERROR:
466 case VOL_LABEL_ERROR:
470 "3920 Cannot label Volume because it is already labeled: \"%s\"\n"),
471 dev->VolHdr.VolumeName);
475 /* Relabel request. If oldname matches, continue */
476 if (strcmp(oldname, dev->VolHdr.VolumeName) != 0) {
477 bnet_fsend(dir, _("3921 Wrong volume mounted.\n"));
480 if (dev->label_type != B_BACULA_LABEL) {
481 bnet_fsend(dir, _("3922 Cannot relabel an ANSI/IBM labeled Volume.\n"));
484 /* Fall through wanted! */
487 if (!write_new_volume_label_to_dev(dcr, newname, poolname,
488 relabel, true /* write dvd now */)) {
489 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), dev->bstrerror());
492 bstrncpy(dcr->VolumeName, newname, sizeof(dcr->VolumeName));
493 /* The following 3000 OK label. string is scanned in ua_label.c */
494 bnet_fsend(dir, "3000 OK label. VolBytes=%s DVD=%d Volume=\"%s\" Device=%s\n",
495 edit_uint64(dev->VolCatInfo.VolCatBytes, ed1),
496 dev->is_dvd()?1:0, newname, dev->print_name());
499 bnet_fsend(dir, _("3914 Failed to label Volume (no media): ERR=%s\n"), dev->bstrerror());
502 bnet_fsend(dir, _("3913 Cannot label Volume. "
503 "Unknown status %d from read_volume_label()\n"), label_status);
508 if (!dev->is_open()) {
511 give_back_device_lock(dev, &hold);
517 * Read the tape label
519 * Enter with the mutex set
521 static bool read_label(DCR *dcr)
525 BSOCK *dir = jcr->dir_bsock;
527 DEVICE *dev = dcr->dev;
529 steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
531 dcr->VolumeName[0] = 0;
532 dev->clear_labeled(); /* force read of label */
533 switch (read_dev_volume_label(dcr)) {
535 bnet_fsend(dir, _("3001 Mounted Volume: %s\n"), dev->VolHdr.VolumeName);
539 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
540 dev->print_name(), jcr->errmsg);
544 give_back_device_lock(dev, &hold);
549 * Searches for device by name, and if found, creates a dcr and
552 static DCR *find_device(JCR *jcr, POOL_MEM &devname, int drive)
555 AUTOCHANGER *changer;
559 unbash_spaces(devname);
560 foreach_res(device, R_DEVICE) {
561 /* Find resource, and make sure we were able to open it */
562 if (fnmatch(device->hdr.name, devname.c_str(), 0) == 0) {
564 device->dev = init_dev(jcr, device);
567 Jmsg(jcr, M_WARNING, 0, _("\n"
568 " Device \"%s\" requested by DIR could not be opened or does not exist.\n"),
572 Dmsg1(20, "Found device %s\n", device->hdr.name);
578 foreach_res(changer, R_AUTOCHANGER) {
579 /* Find resource, and make sure we were able to open it */
580 if (fnmatch(devname.c_str(), changer->hdr.name, 0) == 0) {
581 /* Try each device in this AutoChanger */
582 foreach_alist(device, changer->device) {
583 Dmsg1(100, "Try changer device %s\n", device->hdr.name);
585 device->dev = init_dev(jcr, device);
588 Dmsg1(100, "Device %s could not be opened. Skipped\n", devname.c_str());
589 Jmsg(jcr, M_WARNING, 0, _("\n"
590 " Device \"%s\" in changer \"%s\" requested by DIR could not be opened or does not exist.\n"),
591 device->hdr.name, devname.c_str());
594 if (!device->dev->autoselect) {
595 Dmsg1(100, "Device %s not autoselect skipped.\n", devname.c_str());
596 continue; /* device is not available */
598 if (drive < 0 || drive == (int)device->dev->drive_index) {
599 Dmsg1(20, "Found changer device %s\n", device->hdr.name);
603 Dmsg3(100, "Device %s drive wrong: want=%d got=%d skipping\n",
604 devname.c_str(), drive, (int)device->dev->drive_index);
606 break; /* we found it but could not open a device */
612 Dmsg1(100, "Found device %s\n", device->hdr.name);
613 dcr = new_dcr(jcr, device->dev);
614 dcr->device = device;
622 * Mount command from Director
624 static bool mount_cmd(JCR *jcr)
627 BSOCK *dir = jcr->dir_bsock;
634 ok = sscanf(dir->msg, "mount %127s drive=%d slot=%d", devname.c_str(),
637 ok = sscanf(dir->msg, "mount %127s drive=%d", devname.c_str(), &drive) == 2;
640 dcr = find_device(jcr, devname, drive);
643 dev->dlock(); /* Use P to avoid indefinite block */
644 Dmsg1(100, "mount cmd blocked=%d\n", dev->blocked());
645 switch (dev->blocked()) { /* device blocked? */
646 case BST_WAITING_FOR_SYSOP:
647 /* Someone is waiting, wake him */
648 Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
649 dev->set_blocked(BST_MOUNT);
650 bnet_fsend(dir, "3001 OK mount. Device=%s\n",
652 pthread_cond_broadcast(&dev->wait_next_vol);
653 pthread_cond_broadcast(&wait_device_release);
656 /* In both of these two cases, we (the user) unmounted the Volume */
657 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
659 if (dev->is_autochanger() && slot > 0) {
660 try_autoload_device(jcr, slot, "");
662 /* We freed the device, so reopen it and wake any waiting threads */
663 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
664 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
666 if (dev->blocked() == BST_UNMOUNTED) {
667 /* We blocked the device, so unblock it */
668 Dmsg0(100, "Unmounted. Unblocking device\n");
673 read_dev_volume_label(dcr);
674 if (dev->blocked() == BST_UNMOUNTED) {
675 /* We blocked the device, so unblock it */
676 Dmsg0(100, "Unmounted. Unblocking device\n");
677 read_label(dcr); /* this should not be necessary */
680 Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
681 dev->set_blocked(BST_MOUNT);
683 if (dev->is_labeled()) {
684 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
685 dev->print_name(), dev->VolHdr.VolumeName);
687 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
688 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
691 pthread_cond_broadcast(&dev->wait_next_vol);
692 pthread_cond_broadcast(&wait_device_release);
695 case BST_DOING_ACQUIRE:
696 bnet_fsend(dir, _("3001 Device %s is doing acquire.\n"),
700 case BST_WRITING_LABEL:
701 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
705 case BST_NOT_BLOCKED:
706 if (dev->is_autochanger() && slot > 0) {
707 try_autoload_device(jcr, slot, "");
709 if (dev->is_open()) {
710 if (dev->is_labeled()) {
711 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
712 dev->print_name(), dev->VolHdr.VolumeName);
714 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
715 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
718 } else if (dev->is_tape()) {
719 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
720 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
725 if (dev->is_labeled()) {
726 bnet_fsend(dir, _("3001 Device %s is already mounted with Volume \"%s\"\n"),
727 dev->print_name(), dev->VolHdr.VolumeName);
729 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
730 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
733 } else if (dev->is_dvd()) {
735 bnet_fsend(dir, _("3002 Device %s is mounted.\n"),
738 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
740 } else { /* must be file */
741 bnet_fsend(dir, _("3906 File device %s is always mounted.\n"),
747 bnet_fsend(dir, _("3905 Bizarre wait state %d\n"), dev->blocked());
754 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
757 pm_strcpy(jcr->errmsg, dir->msg);
758 bnet_fsend(dir, _("3909 Error scanning mount command: %s\n"), jcr->errmsg);
760 bnet_sig(dir, BNET_EOD);
765 * unmount command from Director
767 static bool unmount_cmd(JCR *jcr)
770 BSOCK *dir = jcr->dir_bsock;
775 if (sscanf(dir->msg, "unmount %127s drive=%d", devname.c_str(), &drive) == 2) {
776 dcr = find_device(jcr, devname, drive);
779 dev->dlock(); /* Use P to avoid indefinite block */
780 if (!dev->is_open()) {
781 if (!dev->is_busy()) {
782 unload_autochanger(dcr, -1);
785 if (dev->unmount(0)) {
786 bnet_fsend(dir, _("3002 Device %s unmounted.\n"),
789 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
792 Dmsg0(90, "Device already unmounted\n");
793 bnet_fsend(dir, _("3901 Device %s is already unmounted.\n"),
796 } else if (dev->blocked() == BST_WAITING_FOR_SYSOP) {
797 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
799 if (!unload_autochanger(dcr, -1)) {
800 /* ***FIXME**** what is this ???? */
803 if (dev->is_dvd() && !dev->unmount(0)) {
804 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
806 dev->set_blocked(BST_UNMOUNTED_WAITING_FOR_SYSOP);
807 bnet_fsend(dir, _("3001 Device %s unmounted.\n"),
811 } else if (dev->blocked() == BST_DOING_ACQUIRE) {
812 bnet_fsend(dir, _("3902 Device %s is busy in acquire.\n"),
815 } else if (dev->blocked() == BST_WRITING_LABEL) {
816 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
819 } else if (dev->is_busy()) {
820 send_dir_busy_message(dir, dev);
821 } else { /* device not being used */
822 Dmsg0(90, "Device not in use, unmounting\n");
823 /* On FreeBSD, I am having ASSERT() failures in block_device()
824 * and I can only imagine that the thread id that we are
825 * leaving in no_wait_id is being re-used. So here,
826 * we simply do it by hand. Gross, but a solution.
828 /* block_device(dev, BST_UNMOUNTED); replace with 2 lines below */
829 dev->set_blocked(BST_UNMOUNTED);
831 if (!unload_autochanger(dcr, -1)) {
834 if (dev->is_dvd() && !dev->unmount(0)) {
835 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
837 bnet_fsend(dir, _("3002 Device %s unmounted.\n"),
845 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
848 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
849 pm_strcpy(jcr->errmsg, dir->msg);
850 bnet_fsend(dir, _("3907 Error scanning unmount command: %s\n"), jcr->errmsg);
852 bnet_sig(dir, BNET_EOD);
857 * Release command from Director. This rewinds the device and if
858 * configured does a offline and ensures that Bacula will
859 * re-read the label of the tape before continuing. This gives
860 * the operator the chance to change the tape anytime before the
863 static bool release_cmd(JCR *jcr)
866 BSOCK *dir = jcr->dir_bsock;
871 if (sscanf(dir->msg, "release %127s drive=%d", devname.c_str(), &drive) == 2) {
872 dcr = find_device(jcr, devname, drive);
875 dev->dlock(); /* Use P to avoid indefinite block */
876 if (!dev->is_open()) {
877 if (!dev->is_busy()) {
878 unload_autochanger(dcr, -1);
880 Dmsg0(90, "Device already released\n");
881 bnet_fsend(dir, _("3921 Device %s already released.\n"),
884 } else if (dev->blocked() == BST_WAITING_FOR_SYSOP) {
885 Dmsg2(90, "%d waiter dev_block=%d.\n", dev->num_waiting,
887 unload_autochanger(dcr, -1);
888 bnet_fsend(dir, _("3922 Device %s waiting for sysop.\n"),
891 } else if (dev->blocked() == BST_UNMOUNTED_WAITING_FOR_SYSOP) {
892 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
894 bnet_fsend(dir, _("3922 Device %s waiting for mount.\n"),
897 } else if (dev->blocked() == BST_DOING_ACQUIRE) {
898 bnet_fsend(dir, _("3923 Device %s is busy in acquire.\n"),
901 } else if (dev->blocked() == BST_WRITING_LABEL) {
902 bnet_fsend(dir, _("3914 Device %s is being labeled.\n"),
905 } else if (dev->is_busy()) {
906 send_dir_busy_message(dir, dev);
907 } else { /* device not being used */
908 Dmsg0(90, "Device not in use, releaseing\n");
909 unload_autochanger(dcr, -1);
911 bnet_fsend(dir, _("3022 Device %s released.\n"),
918 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
921 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
922 pm_strcpy(jcr->errmsg, dir->msg);
923 bnet_fsend(dir, _("3927 Error scanning release command: %s\n"), jcr->errmsg);
925 bnet_sig(dir, BNET_EOD);
930 static bool bootstrap_cmd(JCR *jcr)
932 return get_bootstrap_file(jcr, jcr->dir_bsock);
936 * Autochanger command from Director
938 static bool changer_cmd(JCR *jcr)
941 BSOCK *dir = jcr->dir_bsock;
944 const char *cmd = NULL;
947 * A safe_cmd may call autochanger script but does not load/unload
948 * slots so it can be done at the same time that the drive is open.
950 bool safe_cmd = false;
952 if (sscanf(dir->msg, "autochanger list %127s", devname.c_str()) == 1) {
954 safe_cmd = ok = true;
955 } else if (sscanf(dir->msg, "autochanger slots %127s", devname.c_str()) == 1) {
957 safe_cmd = ok = true;
958 } else if (sscanf(dir->msg, "autochanger drives %127s", devname.c_str()) == 1) {
960 safe_cmd = ok = true;
963 dcr = find_device(jcr, devname, -1);
966 dev->dlock(); /* Use P to avoid indefinite block */
967 if (!dev->device->changer_res) {
968 bnet_fsend(dir, _("3995 Device %s is not an autochanger.\n"),
970 /* Under certain "safe" conditions, we can steal the lock */
971 } else if (safe_cmd || !dev->is_open() || dev->can_steal_lock()) {
972 autochanger_cmd(dcr, dir, cmd);
973 } else if (dev->is_busy() || dev->is_blocked()) {
974 send_dir_busy_message(dir, dev);
975 } else { /* device not being used */
976 autochanger_cmd(dcr, dir, cmd);
982 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
984 } else { /* error on scanf */
985 pm_strcpy(jcr->errmsg, dir->msg);
986 bnet_fsend(dir, _("3908 Error scanning autocharger drives/list/slots command: %s\n"),
989 dir->signal(BNET_EOD);
994 * Read and return the Volume label
996 static bool readlabel_cmd(JCR *jcr)
999 BSOCK *dir = jcr->dir_bsock;
1005 if (sscanf(dir->msg, "readlabel %127s Slot=%d drive=%d", devname.c_str(),
1006 &Slot, &drive) == 3) {
1007 dcr = find_device(jcr, devname, drive);
1010 dev->dlock(); /* Use P to avoid indefinite block */
1011 if (!dev->is_open()) {
1012 read_volume_label(jcr, dev, Slot);
1014 /* Under certain "safe" conditions, we can steal the lock */
1015 } else if (dev->can_steal_lock()) {
1016 read_volume_label(jcr, dev, Slot);
1017 } else if (dev->is_busy() || dev->is_blocked()) {
1018 send_dir_busy_message(dir, dev);
1019 } else { /* device not being used */
1020 read_volume_label(jcr, dev, Slot);
1026 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
1029 pm_strcpy(jcr->errmsg, dir->msg);
1030 bnet_fsend(dir, _("3909 Error scanning readlabel command: %s\n"), jcr->errmsg);
1032 dir->signal(BNET_EOD);
1038 * Read the tape label
1040 * Enter with the mutex set
1042 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot)
1044 BSOCK *dir = jcr->dir_bsock;
1046 DCR *dcr = jcr->dcr;
1049 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
1051 if (!try_autoload_device(jcr, Slot, "")) {
1052 goto bail_out; /* error */
1055 dev->clear_labeled(); /* force read of label */
1056 switch (read_dev_volume_label(dcr)) {
1058 /* DO NOT add quotes around the Volume name. It is scanned in the DIR */
1059 bnet_fsend(dir, _("3001 Volume=%s Slot=%d\n"), dev->VolHdr.VolumeName, Slot);
1060 Dmsg1(100, "Volume: %s\n", dev->VolHdr.VolumeName);
1063 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
1064 dev->print_name(), jcr->errmsg);
1069 give_back_device_lock(dev, &hold);
1073 static bool try_autoload_device(JCR *jcr, int slot, const char *VolName)
1075 DCR *dcr = jcr->dcr;
1076 BSOCK *dir = jcr->dir_bsock;
1078 bstrncpy(dcr->VolumeName, VolName, sizeof(dcr->VolumeName));
1079 dcr->VolCatInfo.Slot = slot;
1080 dcr->VolCatInfo.InChanger = slot > 0;
1081 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
1087 static void send_dir_busy_message(BSOCK *dir, DEVICE *dev)
1089 if (dev->is_blocked()) {
1090 switch (dev->blocked()) {
1092 bnet_fsend(dir, _("3931 Device %s is BLOCKED. user unmounted.\n"),
1095 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
1096 bnet_fsend(dir, _("3932 Device %s is BLOCKED. user unmounted during wait for media/mount.\n"),
1099 case BST_WAITING_FOR_SYSOP:
1100 bnet_fsend(dir, _("3933 Device %s is BLOCKED waiting for media.\n"),
1103 case BST_DOING_ACQUIRE:
1104 bnet_fsend(dir, _("3934 Device %s is being initialized.\n"),
1107 case BST_WRITING_LABEL:
1108 bnet_fsend(dir, _("3935 Device %s is blocked labeling a Volume.\n"),
1112 bnet_fsend(dir, _("3935 Device %s is blocked for unknown reason.\n"),
1116 } else if (dev->can_read()) {
1117 bnet_fsend(dir, _("3936 Device %s is busy reading.\n"),
1118 dev->print_name());;
1120 bnet_fsend(dir, _("3937 Device %s is busy with %d writer(s).\n"),
1121 dev->print_name(), dev->num_writers);