2 Bacula® - The Network Backup Solution
4 Copyright (C) 2001-2008 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 and included
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 Kern Sibbald.
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 struct s_last_job last_job;
58 extern bool init_done;
60 /* Static variables */
61 static char derrmsg[] = "3900 Invalid command\n";
62 static char OKsetdebug[] = "3000 OK setdebug=%d\n";
63 static char invalid_cmd[] = "3997 Invalid command for a Director with Monitor directive enabled.\n";
65 /* Imported functions */
66 extern void terminate_child();
67 extern bool job_cmd(JCR *jcr);
68 extern bool use_cmd(JCR *jcr);
69 extern bool run_cmd(JCR *jcr);
70 extern bool status_cmd(JCR *sjcr);
71 extern bool qstatus_cmd(JCR *jcr);
72 //extern bool query_cmd(JCR *jcr);
74 /* Forward referenced functions */
75 static bool label_cmd(JCR *jcr);
76 static bool die_cmd(JCR *jcr);
77 static bool relabel_cmd(JCR *jcr);
78 static bool readlabel_cmd(JCR *jcr);
79 static bool release_cmd(JCR *jcr);
80 static bool setdebug_cmd(JCR *jcr);
81 static bool cancel_cmd(JCR *cjcr);
82 static bool mount_cmd(JCR *jcr);
83 static bool unmount_cmd(JCR *jcr);
84 static bool bootstrap_cmd(JCR *jcr);
85 static bool changer_cmd(JCR *sjcr);
86 static bool do_label(JCR *jcr, int relabel);
87 static DCR *find_device(JCR *jcr, POOL_MEM &dev_name, int drive);
88 static void read_volume_label(JCR *jcr, DCR *dcr, DEVICE *dev, int Slot);
89 static void label_volume_if_ok(DCR *dcr, char *oldname,
90 char *newname, char *poolname,
91 int Slot, int relabel);
92 static bool try_autoload_device(JCR *jcr, DCR *dcr, int slot, const char *VolName);
93 static void send_dir_busy_message(BSOCK *dir, DEVICE *dev);
97 bool (*func)(JCR *jcr);
98 bool monitoraccess; /* set if monitors can access this cmd */
102 * The following are the recognized commands from the Director.
104 static struct s_cmds cmds[] = {
105 {"JobId=", job_cmd, 0}, /* start Job */
106 {"autochanger", changer_cmd, 0},
107 {"bootstrap", bootstrap_cmd, 0},
108 {"cancel", cancel_cmd, 0},
109 {".die", die_cmd, 0},
110 {"label", label_cmd, 0}, /* label a tape */
111 {"mount", mount_cmd, 0},
112 {"readlabel", readlabel_cmd, 0},
113 {"release", release_cmd, 0},
114 {"relabel", relabel_cmd, 0}, /* relabel a tape */
115 {"setdebug=", setdebug_cmd, 0}, /* set debug level */
116 {"status", status_cmd, 1},
117 {".status", qstatus_cmd, 1},
118 {"unmount", unmount_cmd, 0},
119 {"use storage=", use_cmd, 0},
121 // {"query", query_cmd, 0},
122 {NULL, NULL} /* list terminator */
127 * Connection request. We accept connections either from the
128 * Director or a Client (File daemon).
130 * Note, we are running as a seperate thread of the Storage daemon.
131 * and it is because a Director has made a connection with
132 * us on the "Message" channel.
134 * Basic tasks done here:
135 * - Create a JCR record
136 * - If it was from the FD, call handle_filed_connection()
137 * - Authenticate the Director
138 * - We wait for a command
139 * - We execute the command
140 * - We continue or exit depending on the return status
142 void *handle_connection_request(void *arg)
144 BSOCK *bs = (BSOCK *)arg;
152 if (bs->recv() <= 0) {
153 Emsg0(M_ERROR, 0, _("Connection request failed.\n"));
159 * Do a sanity check on the message received
161 if (bs->msglen < 25 || bs->msglen > (int)sizeof(name)) {
162 Dmsg1(000, "<filed: %s", bs->msg);
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 (debug_level == 3) {
173 Dmsg1(000, "<filed: %s", bs->msg);
175 if (sscanf(bs->msg, "Hello Start Job %127s", name) == 1) {
176 Dmsg1(110, "Got a FD connection at %s\n", bstrftimes(tbuf, sizeof(tbuf),
177 (utime_t)time(NULL)));
178 Dmsg1(50, "%s", bs->msg);
179 handle_filed_connection(bs, name);
184 * This is a connection from the Director, so setup a JCR
186 Dmsg1(110, "Got a DIR connection at %s\n", bstrftimes(tbuf, sizeof(tbuf),
187 (utime_t)time(NULL)));
188 jcr = new_jcr(sizeof(JCR), stored_free_jcr); /* create Job Control Record */
189 jcr->dir_bsock = bs; /* save Director bsock */
190 jcr->dir_bsock->set_jcr(jcr);
191 jcr->dcrs = New(alist(10, not_owned_by_alist));
192 /* Initialize FD start condition variable */
193 int errstat = pthread_cond_init(&jcr->job_start_wait, NULL);
196 Jmsg1(jcr, M_FATAL, 0, _("Unable to init job cond variable: ERR=%s\n"), be.bstrerror(errstat));
200 Dmsg0(1000, "stored in start_job\n");
203 * Authenticate the Director
205 if (!authenticate_director(jcr)) {
206 Jmsg(jcr, M_FATAL, 0, _("Unable to authenticate Director\n"));
209 Dmsg0(90, "Message channel init completed.\n");
211 for (quit=false; !quit;) {
213 if ((bnet_stat = bs->recv()) <= 0) {
214 break; /* connection terminated */
216 Dmsg1(199, "<dird: %s\n", bs->msg);
217 /* Ensure that device initialization is complete */
222 for (i=0; cmds[i].cmd; i++) {
223 if (strncmp(cmds[i].cmd, bs->msg, strlen(cmds[i].cmd)) == 0) {
224 if ((!cmds[i].monitoraccess) && (jcr->director->monitor)) {
225 Dmsg1(100, "Command \"%s\" is invalid.\n", cmds[i].cmd);
226 bs->fsend(invalid_cmd);
227 bs->signal(BNET_EOD);
230 Dmsg1(200, "Do command: %s\n", cmds[i].cmd);
231 if (!cmds[i].func(jcr)) { /* do command */
232 quit = true; /* error, get out */
233 Dmsg1(190, "Command %s reqeusts quit\n", cmds[i].cmd);
235 found = true; /* indicate command found */
239 if (!found) { /* command not found */
245 generate_daemon_event(jcr, "JobEnd");
246 dequeue_messages(jcr); /* send any queued messages */
247 bs->signal(BNET_TERMINATE);
254 * Force SD to die, and hopefully dump itself. Turned on only
255 * in development version.
257 static bool die_cmd(JCR *jcr)
262 Pmsg0(000, "I have been requested to die ...");
263 a = djcr->JobId; /* ref NULL pointer */
271 * Set debug level as requested by the Director
274 static bool setdebug_cmd(JCR *jcr)
276 BSOCK *dir = jcr->dir_bsock;
277 int level, trace_flag;
279 Dmsg1(10, "setdebug_cmd: %s", dir->msg);
280 if (sscanf(dir->msg, "setdebug=%d trace=%d", &level, &trace_flag) != 2 || level < 0) {
281 dir->fsend(_("3991 Bad setdebug command: %s\n"), dir->msg);
285 set_trace(trace_flag);
286 return dir->fsend(OKsetdebug, level);
293 static bool cancel_cmd(JCR *cjcr)
295 BSOCK *dir = cjcr->dir_bsock;
297 char Job[MAX_NAME_LENGTH];
300 if (sscanf(dir->msg, "cancel Job=%127s", Job) == 1) {
301 if (!(jcr=get_jcr_by_full_name(Job))) {
302 dir->fsend(_("3904 Job %s not found.\n"), Job);
304 oldStatus = jcr->JobStatus;
305 set_jcr_job_status(jcr, JS_Canceled);
306 if (!jcr->authenticated && oldStatus == JS_WaitFD) {
307 pthread_cond_signal(&jcr->job_start_wait); /* wake waiting thread */
309 if (jcr->file_bsock) {
310 bnet_sig(jcr->file_bsock, BNET_TERMINATE);
312 /* Still waiting for FD to connect, release it */
313 pthread_cond_signal(&jcr->job_start_wait); /* wake waiting job */
315 /* If thread waiting on mount, wake him */
316 if (jcr->dcr && jcr->dcr->dev && jcr->dcr->dev->waiting_for_mount()) {
317 pthread_cond_broadcast(&jcr->dcr->dev->wait_next_vol);
318 Dmsg1(100, "JobId=%u broadcast wait_device_release\n", (uint32_t)jcr->JobId);
319 pthread_cond_broadcast(&wait_device_release);
321 if (jcr->read_dcr && jcr->read_dcr->dev && jcr->read_dcr->dev->waiting_for_mount()) {
322 pthread_cond_broadcast(&jcr->read_dcr->dev->wait_next_vol);
323 Dmsg1(100, "JobId=%u broadcast wait_device_release\n", (uint32_t)jcr->JobId);
324 pthread_cond_broadcast(&wait_device_release);
326 Jmsg(jcr, M_INFO, 0, _("Job %s marked to be canceled.\n"), jcr->Job);
327 dir->fsend(_("3000 Job %s marked to be canceled.\n"), jcr->Job);
331 dir->fsend(_("3903 Error scanning cancel command.\n"));
333 dir->signal(BNET_EOD);
341 static bool label_cmd(JCR *jcr)
343 return do_label(jcr, 0);
346 static bool relabel_cmd(JCR *jcr)
348 return do_label(jcr, 1);
351 static bool do_label(JCR *jcr, int relabel)
353 POOLMEM *newname, *oldname, *poolname, *mtype;
355 BSOCK *dir = jcr->dir_bsock;
362 newname = get_memory(dir->msglen+1);
363 oldname = get_memory(dir->msglen+1);
364 poolname = get_memory(dir->msglen+1);
365 mtype = get_memory(dir->msglen+1);
367 if (sscanf(dir->msg, "relabel %127s OldName=%127s NewName=%127s PoolName=%127s "
368 "MediaType=%127s Slot=%d drive=%d",
369 dev_name.c_str(), oldname, newname, poolname, mtype,
370 &slot, &drive) == 7) {
375 if (sscanf(dir->msg, "label %127s VolumeName=%127s PoolName=%127s "
376 "MediaType=%127s Slot=%d drive=%d",
377 dev_name.c_str(), newname, poolname, mtype, &slot, &drive) == 6) {
382 unbash_spaces(newname);
383 unbash_spaces(oldname);
384 unbash_spaces(poolname);
385 unbash_spaces(mtype);
386 dcr = find_device(jcr, dev_name, drive);
389 dev->dlock(); /* Use P to avoid indefinite block */
390 if (!dev->is_open() && !dev->is_busy()) {
391 Dmsg1(400, "Can %slabel. Device is not open\n", relabel?"re":"");
392 label_volume_if_ok(dcr, oldname, newname, poolname, slot, relabel);
394 /* Under certain "safe" conditions, we can steal the lock */
395 } else if (dev->can_steal_lock()) {
396 Dmsg0(400, "Can relabel. can_steal_lock\n");
397 label_volume_if_ok(dcr, oldname, newname, poolname, slot, relabel);
398 } else if (dev->is_busy() || dev->is_blocked()) {
399 send_dir_busy_message(dir, dev);
400 } else { /* device not being used */
401 Dmsg0(400, "Can relabel. device not used\n");
402 label_volume_if_ok(dcr, oldname, newname, poolname, slot, relabel);
407 dir->fsend(_("3999 Device \"%s\" not found or could not be opened.\n"), dev_name.c_str());
410 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
411 pm_strcpy(jcr->errmsg, dir->msg);
412 dir->fsend(_("3903 Error scanning label command: %s\n"), jcr->errmsg);
414 free_memory(oldname);
415 free_memory(newname);
416 free_memory(poolname);
418 dir->signal(BNET_EOD);
423 * Read the tape label and determine if we can safely
424 * label the tape (not a Bacula volume), then label it.
426 * Enter with the mutex set
428 static void label_volume_if_ok(DCR *dcr, char *oldname,
429 char *newname, char *poolname,
430 int slot, int relabel)
432 BSOCK *dir = dcr->jcr->dir_bsock;
434 DEVICE *dev = dcr->dev;
437 const char *volname = (relabel == 1) ? oldname : newname;
440 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
441 Dmsg1(100, "Stole device %s lock, writing label.\n", dev->print_name());
444 Dmsg0(90, "try_autoload_device - looking for volume_info\n");
445 if (!try_autoload_device(dcr->jcr, dcr, slot, volname)) {
446 goto bail_out; /* error */
449 /* Ensure that the device is open -- autoload_device() closes it */
450 if (dev->is_tape()) {
451 mode = OPEN_READ_WRITE;
453 mode = CREATE_READ_WRITE;
457 dev->truncating = true; /* let open() know we will truncate it */
459 /* Set old volume name for open if relabeling */
460 bstrncpy(dcr->VolCatInfo.VolCatName, volname, sizeof(dcr->VolCatInfo.VolCatName));
461 if (dev->open(dcr, mode) < 0) {
462 dir->fsend(_("3910 Unable to open device %s: ERR=%s\n"),
463 dev->print_name(), dev->bstrerror());
467 /* See what we have for a Volume */
468 label_status = read_dev_volume_label(dcr);
470 /* Set new volume name */
471 bstrncpy(dcr->VolCatInfo.VolCatName, newname, sizeof(dcr->VolCatInfo.VolCatName));
472 switch(label_status) {
474 case VOL_VERSION_ERROR:
475 case VOL_LABEL_ERROR:
479 "3920 Cannot label Volume because it is already labeled: \"%s\"\n"),
480 dev->VolHdr.VolumeName);
484 /* Relabel request. If oldname matches, continue */
485 if (strcmp(oldname, dev->VolHdr.VolumeName) != 0) {
486 dir->fsend(_("3921 Wrong volume mounted.\n"));
489 if (dev->label_type != B_BACULA_LABEL) {
490 dir->fsend(_("3922 Cannot relabel an ANSI/IBM labeled Volume.\n"));
493 /* Fall through wanted! */
496 if (!write_new_volume_label_to_dev(dcr, newname, poolname,
497 relabel, true /* write dvd now */)) {
498 dir->fsend(_("3912 Failed to label Volume: ERR=%s\n"), dev->bstrerror());
501 bstrncpy(dcr->VolumeName, newname, sizeof(dcr->VolumeName));
502 /* The following 3000 OK label. string is scanned in ua_label.c */
503 dir->fsend("3000 OK label. VolBytes=%s DVD=%d Volume=\"%s\" Device=%s\n",
504 edit_uint64(dev->VolCatInfo.VolCatBytes, ed1),
505 dev->is_dvd()?1:0, newname, dev->print_name());
508 dir->fsend(_("3914 Failed to label Volume (no media): ERR=%s\n"), dev->bstrerror());
511 dir->fsend(_("3913 Cannot label Volume. "
512 "Unknown status %d from read_volume_label()\n"), label_status);
517 if (!dev->is_open()) {
520 volume_unused(dcr); /* no longer using volume */
521 give_back_device_lock(dev, &hold);
527 * Read the tape label
529 * Enter with the mutex set
531 static bool read_label(DCR *dcr)
535 BSOCK *dir = jcr->dir_bsock;
537 DEVICE *dev = dcr->dev;
539 steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
541 dcr->VolumeName[0] = 0;
542 dev->clear_labeled(); /* force read of label */
543 switch (read_dev_volume_label(dcr)) {
545 dir->fsend(_("3001 Mounted Volume: %s\n"), dev->VolHdr.VolumeName);
549 dir->fsend(_("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
550 dev->print_name(), jcr->errmsg);
555 give_back_device_lock(dev, &hold);
560 * Searches for device by name, and if found, creates a dcr and
563 static DCR *find_device(JCR *jcr, POOL_MEM &devname, int drive)
566 AUTOCHANGER *changer;
570 unbash_spaces(devname);
571 foreach_res(device, R_DEVICE) {
572 /* Find resource, and make sure we were able to open it */
573 if (strcmp(device->hdr.name, devname.c_str()) == 0) {
575 device->dev = init_dev(jcr, device);
578 Jmsg(jcr, M_WARNING, 0, _("\n"
579 " Device \"%s\" requested by DIR could not be opened or does not exist.\n"),
583 Dmsg1(20, "Found device %s\n", device->hdr.name);
589 foreach_res(changer, R_AUTOCHANGER) {
590 /* Find resource, and make sure we were able to open it */
591 if (strcmp(devname.c_str(), changer->hdr.name) == 0) {
592 /* Try each device in this AutoChanger */
593 foreach_alist(device, changer->device) {
594 Dmsg1(100, "Try changer device %s\n", device->hdr.name);
596 device->dev = init_dev(jcr, device);
599 Dmsg1(100, "Device %s could not be opened. Skipped\n", devname.c_str());
600 Jmsg(jcr, M_WARNING, 0, _("\n"
601 " Device \"%s\" in changer \"%s\" requested by DIR could not be opened or does not exist.\n"),
602 device->hdr.name, devname.c_str());
605 if (!device->dev->autoselect) {
606 Dmsg1(100, "Device %s not autoselect skipped.\n", devname.c_str());
607 continue; /* device is not available */
609 if (drive < 0 || drive == (int)device->dev->drive_index) {
610 Dmsg1(20, "Found changer device %s\n", device->hdr.name);
614 Dmsg3(100, "Device %s drive wrong: want=%d got=%d skipping\n",
615 devname.c_str(), drive, (int)device->dev->drive_index);
617 break; /* we found it but could not open a device */
623 Dmsg1(100, "Found device %s\n", device->hdr.name);
624 dcr = new_dcr(jcr, NULL, device->dev);
625 dcr->device = device;
632 * Mount command from Director
634 static bool mount_cmd(JCR *jcr)
637 BSOCK *dir = jcr->dir_bsock;
644 ok = sscanf(dir->msg, "mount %127s drive=%d slot=%d", devname.c_str(),
647 ok = sscanf(dir->msg, "mount %127s drive=%d", devname.c_str(), &drive) == 2;
650 dcr = find_device(jcr, devname, drive);
653 dev->dlock(); /* Use P to avoid indefinite block */
654 Dmsg2(100, "mount cmd blocked=%d must_unload=%d\n", dev->blocked(),
656 switch (dev->blocked()) { /* device blocked? */
657 case BST_WAITING_FOR_SYSOP:
658 /* Someone is waiting, wake him */
659 Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
660 dev->set_blocked(BST_MOUNT);
661 dir->fsend("3001 OK mount. Device=%s\n",
663 pthread_cond_broadcast(&dev->wait_next_vol);
664 Dmsg1(100, "JobId=%u broadcast wait_device_release\n", (uint32_t)dcr->jcr->JobId);
665 pthread_cond_broadcast(&wait_device_release);
668 /* In both of these two cases, we (the user) unmounted the Volume */
669 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
671 if (dev->is_autochanger() && slot > 0) {
672 try_autoload_device(jcr, dcr, slot, "");
674 /* We freed the device, so reopen it and wake any waiting threads */
675 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
676 dir->fsend(_("3901 Unable to open device %s: ERR=%s\n"),
677 dev->print_name(), dev->bstrerror());
678 if (dev->blocked() == BST_UNMOUNTED) {
679 /* We blocked the device, so unblock it */
680 Dmsg0(100, "Unmounted. Unblocking device\n");
685 read_dev_volume_label(dcr);
686 if (dev->blocked() == BST_UNMOUNTED) {
687 /* We blocked the device, so unblock it */
688 Dmsg0(100, "Unmounted. Unblocking device\n");
689 read_label(dcr); /* this should not be necessary */
692 Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
693 dev->set_blocked(BST_MOUNT);
695 if (dev->is_labeled()) {
696 dir->fsend(_("3001 Device %s is mounted with Volume \"%s\"\n"),
697 dev->print_name(), dev->VolHdr.VolumeName);
699 dir->fsend(_("3905 Device %s open but no Bacula volume is mounted.\n"
700 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
703 pthread_cond_broadcast(&dev->wait_next_vol);
704 Dmsg1(100, "JobId=%u broadcast wait_device_release\n", (uint32_t)dcr->jcr->JobId);
705 pthread_cond_broadcast(&wait_device_release);
708 case BST_DOING_ACQUIRE:
709 dir->fsend(_("3001 Device %s is doing acquire.\n"),
713 case BST_WRITING_LABEL:
714 dir->fsend(_("3903 Device %s is being labeled.\n"),
718 case BST_NOT_BLOCKED:
719 if (dev->is_autochanger() && slot > 0) {
720 try_autoload_device(jcr, dcr, slot, "");
722 if (dev->is_open()) {
723 if (dev->is_labeled()) {
724 dir->fsend(_("3001 Device %s is mounted with Volume \"%s\"\n"),
725 dev->print_name(), dev->VolHdr.VolumeName);
727 dir->fsend(_("3905 Device %s open but no Bacula volume is mounted.\n"
728 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
731 } else if (dev->is_tape()) {
732 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
733 dir->fsend(_("3901 Unable to open device %s: ERR=%s\n"),
734 dev->print_name(), dev->bstrerror());
738 if (dev->is_labeled()) {
739 dir->fsend(_("3001 Device %s is already mounted with Volume \"%s\"\n"),
740 dev->print_name(), dev->VolHdr.VolumeName);
742 dir->fsend(_("3905 Device %s open but no Bacula volume is mounted.\n"
743 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
746 } else if (dev->is_unmountable()) {
748 dir->fsend(_("3002 Device %s is mounted.\n"),
751 dir->fsend(_("3907 %s"), dev->bstrerror());
753 } else { /* must be file */
754 dir->fsend(_("3906 File device %s is always mounted.\n"),
760 dir->fsend(_("3905 Bizarre wait state %d\n"), dev->blocked());
766 dir->fsend(_("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
769 pm_strcpy(jcr->errmsg, dir->msg);
770 dir->fsend(_("3909 Error scanning mount command: %s\n"), jcr->errmsg);
772 dir->signal(BNET_EOD);
777 * unmount command from Director
779 static bool unmount_cmd(JCR *jcr)
782 BSOCK *dir = jcr->dir_bsock;
787 if (sscanf(dir->msg, "unmount %127s drive=%d", devname.c_str(), &drive) == 2) {
788 dcr = find_device(jcr, devname, drive);
791 dev->dlock(); /* Use P to avoid indefinite block */
792 if (!dev->is_open()) {
793 if (!dev->is_busy()) {
794 unload_autochanger(dcr, -1);
796 if (dev->is_unmountable()) {
797 if (dev->unmount(0)) {
798 dir->fsend(_("3002 Device %s unmounted.\n"),
801 dir->fsend(_("3907 %s"), dev->bstrerror());
804 Dmsg0(90, "Device already unmounted\n");
805 dir->fsend(_("3901 Device %s is already unmounted.\n"),
808 } else if (dev->blocked() == BST_WAITING_FOR_SYSOP) {
809 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
811 if (!unload_autochanger(dcr, -1)) {
812 /* ***FIXME**** what is this ???? */
815 if (dev->is_unmountable() && !dev->unmount(0)) {
816 dir->fsend(_("3907 %s"), dev->bstrerror());
818 dev->set_blocked(BST_UNMOUNTED_WAITING_FOR_SYSOP);
819 dir->fsend(_("3001 Device %s unmounted.\n"),
823 } else if (dev->blocked() == BST_DOING_ACQUIRE) {
824 dir->fsend(_("3902 Device %s is busy in acquire.\n"),
827 } else if (dev->blocked() == BST_WRITING_LABEL) {
828 dir->fsend(_("3903 Device %s is being labeled.\n"),
831 } else if (dev->is_busy()) {
832 send_dir_busy_message(dir, dev);
833 } else { /* device not being used */
834 Dmsg0(90, "Device not in use, unmounting\n");
835 /* On FreeBSD, I am having ASSERT() failures in block_device()
836 * and I can only imagine that the thread id that we are
837 * leaving in no_wait_id is being re-used. So here,
838 * we simply do it by hand. Gross, but a solution.
840 /* block_device(dev, BST_UNMOUNTED); replace with 2 lines below */
841 dev->set_blocked(BST_UNMOUNTED);
842 clear_thread_id(dev->no_wait_id);
843 if (!unload_autochanger(dcr, -1)) {
846 if (dev->is_unmountable() && !dev->unmount(0)) {
847 dir->fsend(_("3907 %s"), dev->bstrerror());
849 dir->fsend(_("3002 Device %s unmounted.\n"),
856 dir->fsend(_("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
859 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
860 pm_strcpy(jcr->errmsg, dir->msg);
861 dir->fsend(_("3907 Error scanning unmount command: %s\n"), jcr->errmsg);
863 dir->signal(BNET_EOD);
868 * Release command from Director. This rewinds the device and if
869 * configured does a offline and ensures that Bacula will
870 * re-read the label of the tape before continuing. This gives
871 * the operator the chance to change the tape anytime before the
874 static bool release_cmd(JCR *jcr)
877 BSOCK *dir = jcr->dir_bsock;
882 if (sscanf(dir->msg, "release %127s drive=%d", devname.c_str(), &drive) == 2) {
883 dcr = find_device(jcr, devname, drive);
886 dev->dlock(); /* Use P to avoid indefinite block */
887 if (!dev->is_open()) {
888 if (!dev->is_busy()) {
889 unload_autochanger(dcr, -1);
891 Dmsg0(90, "Device already released\n");
892 dir->fsend(_("3921 Device %s already released.\n"),
895 } else if (dev->blocked() == BST_WAITING_FOR_SYSOP) {
896 Dmsg2(90, "%d waiter dev_block=%d.\n", dev->num_waiting,
898 unload_autochanger(dcr, -1);
899 dir->fsend(_("3922 Device %s waiting for sysop.\n"),
902 } else if (dev->blocked() == BST_UNMOUNTED_WAITING_FOR_SYSOP) {
903 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
905 dir->fsend(_("3922 Device %s waiting for mount.\n"),
908 } else if (dev->blocked() == BST_DOING_ACQUIRE) {
909 dir->fsend(_("3923 Device %s is busy in acquire.\n"),
912 } else if (dev->blocked() == BST_WRITING_LABEL) {
913 dir->fsend(_("3914 Device %s is being labeled.\n"),
916 } else if (dev->is_busy()) {
917 send_dir_busy_message(dir, dev);
918 } else { /* device not being used */
919 Dmsg0(90, "Device not in use, releasing\n");
920 dcr->release_volume();
921 dir->fsend(_("3022 Device %s released.\n"),
927 dir->fsend(_("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
930 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
931 pm_strcpy(jcr->errmsg, dir->msg);
932 dir->fsend(_("3927 Error scanning release command: %s\n"), jcr->errmsg);
934 dir->signal(BNET_EOD);
939 static bool bootstrap_cmd(JCR *jcr)
941 return get_bootstrap_file(jcr, jcr->dir_bsock);
945 * Autochanger command from Director
947 static bool changer_cmd(JCR *jcr)
950 BSOCK *dir = jcr->dir_bsock;
953 const char *cmd = NULL;
956 * A safe_cmd may call autochanger script but does not load/unload
957 * slots so it can be done at the same time that the drive is open.
959 bool safe_cmd = false;
961 if (sscanf(dir->msg, "autochanger list %127s", devname.c_str()) == 1) {
963 safe_cmd = ok = true;
964 } else if (sscanf(dir->msg, "autochanger slots %127s", devname.c_str()) == 1) {
966 safe_cmd = ok = true;
967 } else if (sscanf(dir->msg, "autochanger drives %127s", devname.c_str()) == 1) {
969 safe_cmd = ok = true;
972 dcr = find_device(jcr, devname, -1);
975 dev->dlock(); /* Use P to avoid indefinite block */
976 if (!dev->device->changer_res) {
977 dir->fsend(_("3995 Device %s is not an autochanger.\n"),
979 /* Under certain "safe" conditions, we can steal the lock */
980 } else if (safe_cmd || !dev->is_open() || dev->can_steal_lock()) {
981 autochanger_cmd(dcr, dir, cmd);
982 } else if (dev->is_busy() || dev->is_blocked()) {
983 send_dir_busy_message(dir, dev);
984 } else { /* device not being used */
985 autochanger_cmd(dcr, dir, cmd);
990 dir->fsend(_("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
992 } else { /* error on scanf */
993 pm_strcpy(jcr->errmsg, dir->msg);
994 dir->fsend(_("3908 Error scanning autocharger drives/list/slots command: %s\n"),
997 dir->signal(BNET_EOD);
1002 * Read and return the Volume label
1004 static bool readlabel_cmd(JCR *jcr)
1007 BSOCK *dir = jcr->dir_bsock;
1013 if (sscanf(dir->msg, "readlabel %127s Slot=%d drive=%d", devname.c_str(),
1014 &Slot, &drive) == 3) {
1015 dcr = find_device(jcr, devname, drive);
1018 dev->dlock(); /* Use P to avoid indefinite block */
1019 if (!dev->is_open()) {
1020 read_volume_label(jcr, dcr, dev, Slot);
1022 /* Under certain "safe" conditions, we can steal the lock */
1023 } else if (dev->can_steal_lock()) {
1024 read_volume_label(jcr, dcr, dev, Slot);
1025 } else if (dev->is_busy() || dev->is_blocked()) {
1026 send_dir_busy_message(dir, dev);
1027 } else { /* device not being used */
1028 read_volume_label(jcr, dcr, dev, Slot);
1033 dir->fsend(_("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
1036 pm_strcpy(jcr->errmsg, dir->msg);
1037 dir->fsend(_("3909 Error scanning readlabel command: %s\n"), jcr->errmsg);
1039 dir->signal(BNET_EOD);
1045 * Read the tape label
1047 * Enter with the mutex set
1049 static void read_volume_label(JCR *jcr, DCR *dcr, DEVICE *dev, int Slot)
1051 BSOCK *dir = jcr->dir_bsock;
1055 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
1057 if (!try_autoload_device(jcr, dcr, Slot, "")) {
1058 goto bail_out; /* error */
1061 dev->clear_labeled(); /* force read of label */
1062 switch (read_dev_volume_label(dcr)) {
1064 /* DO NOT add quotes around the Volume name. It is scanned in the DIR */
1065 dir->fsend(_("3001 Volume=%s Slot=%d\n"), dev->VolHdr.VolumeName, Slot);
1066 Dmsg1(100, "Volume: %s\n", dev->VolHdr.VolumeName);
1069 dir->fsend(_("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
1070 dev->print_name(), jcr->errmsg);
1075 give_back_device_lock(dev, &hold);
1079 static bool try_autoload_device(JCR *jcr, DCR *dcr, int slot, const char *VolName)
1081 BSOCK *dir = jcr->dir_bsock;
1083 bstrncpy(dcr->VolumeName, VolName, sizeof(dcr->VolumeName));
1084 dcr->VolCatInfo.Slot = slot;
1085 dcr->VolCatInfo.InChanger = slot > 0;
1086 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
1092 static void send_dir_busy_message(BSOCK *dir, DEVICE *dev)
1094 if (dev->is_blocked()) {
1095 switch (dev->blocked()) {
1097 dir->fsend(_("3931 Device %s is BLOCKED. user unmounted.\n"),
1100 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
1101 dir->fsend(_("3932 Device %s is BLOCKED. user unmounted during wait for media/mount.\n"),
1104 case BST_WAITING_FOR_SYSOP:
1105 dir->fsend(_("3933 Device %s is BLOCKED waiting for media.\n"),
1108 case BST_DOING_ACQUIRE:
1109 dir->fsend(_("3934 Device %s is being initialized.\n"),
1112 case BST_WRITING_LABEL:
1113 dir->fsend(_("3935 Device %s is blocked labeling a Volume.\n"),
1117 dir->fsend(_("3935 Device %s is blocked for unknown reason.\n"),
1121 } else if (dev->can_read()) {
1122 dir->fsend(_("3936 Device %s is busy reading.\n"),
1123 dev->print_name());;
1125 dir->fsend(_("3937 Device %s is busy with %d writer(s).\n"),
1126 dev->print_name(), dev->num_writers);