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 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, DCR *dcr, 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, DCR *dcr, 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;
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)) {
163 Dmsg1(000, "<filed: %s", bs->msg);
164 Emsg1(M_ERROR, 0, _("Invalid connection. Len=%d\n"), bs->msglen);
169 * See if this is a File daemon connection. If so
172 Dmsg1(110, "Conn: %s", bs->msg);
173 if (debug_level == 3) {
174 Dmsg1(000, "<filed: %s", bs->msg);
176 if (sscanf(bs->msg, "Hello Start Job %127s", name) == 1) {
177 Dmsg0(110, "Got a FD connection\n");
178 handle_filed_connection(bs, name);
183 * This is a connection from the Director, so setup a JCR
185 Dmsg0(110, "Got a DIR connection\n");
186 jcr = new_jcr(sizeof(JCR), stored_free_jcr); /* create Job Control Record */
187 jcr->dir_bsock = bs; /* save Director bsock */
188 jcr->dir_bsock->set_jcr(jcr);
189 jcr->dcrs = New(alist(10, not_owned_by_alist));
190 /* Initialize FD start condition variable */
191 int errstat = pthread_cond_init(&jcr->job_start_wait, NULL);
194 Jmsg1(jcr, M_FATAL, 0, _("Unable to init job cond variable: ERR=%s\n"), be.bstrerror(errstat));
198 Dmsg0(1000, "stored in start_job\n");
201 * Authenticate the Director
203 if (!authenticate_director(jcr)) {
204 Jmsg(jcr, M_FATAL, 0, _("Unable to authenticate Director\n"));
207 Dmsg0(90, "Message channel init completed.\n");
209 for (quit=false; !quit;) {
211 if ((bnet_stat = bs->recv()) <= 0) {
212 break; /* connection terminated */
214 Dmsg1(199, "<dird: %s\n", bs->msg);
215 /* Ensure that device initialization is complete */
220 for (i=0; cmds[i].cmd; i++) {
221 if (strncmp(cmds[i].cmd, bs->msg, strlen(cmds[i].cmd)) == 0) {
222 if ((!cmds[i].monitoraccess) && (jcr->director->monitor)) {
223 Dmsg1(100, "Command \"%s\" is invalid.\n", cmds[i].cmd);
224 bs->fsend(invalid_cmd);
225 bs->signal(BNET_EOD);
228 Dmsg1(200, "Do command: %s\n", cmds[i].cmd);
229 if (!cmds[i].func(jcr)) { /* do command */
230 quit = true; /* error, get out */
231 Dmsg1(190, "Command %s reqeusts quit\n", cmds[i].cmd);
233 found = true; /* indicate command found */
237 if (!found) { /* command not found */
243 generate_daemon_event(jcr, "JobEnd");
244 dequeue_messages(jcr); /* send any queued messages */
245 bs->signal(BNET_TERMINATE);
252 * Force SD to die, and hopefully dump itself. Turned on only
253 * in development version.
255 static bool die_cmd(JCR *jcr)
260 Pmsg0(000, "I have been requested to die ...");
261 a = djcr->JobId; /* ref NULL pointer */
269 * Set debug level as requested by the Director
272 static bool setdebug_cmd(JCR *jcr)
274 BSOCK *dir = jcr->dir_bsock;
275 int level, trace_flag;
277 Dmsg1(10, "setdebug_cmd: %s", dir->msg);
278 if (sscanf(dir->msg, "setdebug=%d trace=%d", &level, &trace_flag) != 2 || level < 0) {
279 dir->fsend(_("3991 Bad setdebug command: %s\n"), dir->msg);
283 set_trace(trace_flag);
284 return dir->fsend(OKsetdebug, level);
291 static bool cancel_cmd(JCR *cjcr)
293 BSOCK *dir = cjcr->dir_bsock;
295 char Job[MAX_NAME_LENGTH];
298 if (sscanf(dir->msg, "cancel Job=%127s", Job) == 1) {
299 if (!(jcr=get_jcr_by_full_name(Job))) {
300 dir->fsend(_("3904 Job %s not found.\n"), Job);
302 oldStatus = jcr->JobStatus;
303 set_jcr_job_status(jcr, JS_Canceled);
304 if (!jcr->authenticated && oldStatus == JS_WaitFD) {
305 pthread_cond_signal(&jcr->job_start_wait); /* wake waiting thread */
307 if (jcr->file_bsock) {
308 bnet_sig(jcr->file_bsock, BNET_TERMINATE);
310 /* Still waiting for FD to connect, release it */
311 pthread_cond_signal(&jcr->job_start_wait); /* wake waiting job */
313 /* If thread waiting on mount, wake him */
314 if (jcr->dcr && jcr->dcr->dev && jcr->dcr->dev->waiting_for_mount()) {
315 pthread_cond_broadcast(&jcr->dcr->dev->wait_next_vol);
316 Dmsg1(100, "JobId=%u broadcast wait_device_release\n", (uint32_t)jcr->JobId);
317 pthread_cond_broadcast(&wait_device_release);
319 if (jcr->read_dcr && jcr->read_dcr->dev && jcr->read_dcr->dev->waiting_for_mount()) {
320 pthread_cond_broadcast(&jcr->read_dcr->dev->wait_next_vol);
321 Dmsg1(100, "JobId=%u broadcast wait_device_release\n", (uint32_t)jcr->JobId);
322 pthread_cond_broadcast(&wait_device_release);
324 Jmsg(jcr, M_INFO, 0, _("Job %s marked to be canceled.\n"), jcr->Job);
325 dir->fsend(_("3000 Job %s marked to be canceled.\n"), jcr->Job);
329 dir->fsend(_("3903 Error scanning cancel command.\n"));
331 dir->signal(BNET_EOD);
339 static bool label_cmd(JCR *jcr)
341 return do_label(jcr, 0);
344 static bool relabel_cmd(JCR *jcr)
346 return do_label(jcr, 1);
349 static bool do_label(JCR *jcr, int relabel)
351 POOLMEM *newname, *oldname, *poolname, *mtype;
353 BSOCK *dir = jcr->dir_bsock;
360 newname = get_memory(dir->msglen+1);
361 oldname = get_memory(dir->msglen+1);
362 poolname = get_memory(dir->msglen+1);
363 mtype = get_memory(dir->msglen+1);
365 if (sscanf(dir->msg, "relabel %127s OldName=%127s NewName=%127s PoolName=%127s "
366 "MediaType=%127s Slot=%d drive=%d",
367 dev_name.c_str(), oldname, newname, poolname, mtype,
368 &slot, &drive) == 7) {
373 if (sscanf(dir->msg, "label %127s VolumeName=%127s PoolName=%127s "
374 "MediaType=%127s Slot=%d drive=%d",
375 dev_name.c_str(), newname, poolname, mtype, &slot, &drive) == 6) {
380 unbash_spaces(newname);
381 unbash_spaces(oldname);
382 unbash_spaces(poolname);
383 unbash_spaces(mtype);
384 dcr = find_device(jcr, dev_name, drive);
387 dev->dlock(); /* Use P to avoid indefinite block */
388 if (!dev->is_open()) {
389 Dmsg1(400, "Can %slabel. Device is not open\n", relabel?"re":"");
390 label_volume_if_ok(dcr, oldname, newname, poolname, slot, relabel);
392 /* Under certain "safe" conditions, we can steal the lock */
393 } else if (dev->can_steal_lock()) {
394 Dmsg0(400, "Can relabel. can_steal_lock\n");
395 label_volume_if_ok(dcr, oldname, newname, poolname, slot, relabel);
396 } else if (dev->is_busy() || dev->is_blocked()) {
397 send_dir_busy_message(dir, dev);
398 } else { /* device not being used */
399 Dmsg0(400, "Can relabel. device not used\n");
400 label_volume_if_ok(dcr, oldname, newname, poolname, slot, relabel);
405 dir->fsend(_("3999 Device \"%s\" not found or could not be opened.\n"), dev_name.c_str());
408 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
409 pm_strcpy(jcr->errmsg, dir->msg);
410 dir->fsend(_("3903 Error scanning label command: %s\n"), jcr->errmsg);
412 free_memory(oldname);
413 free_memory(newname);
414 free_memory(poolname);
416 dir->signal(BNET_EOD);
421 * Read the tape label and determine if we can safely
422 * label the tape (not a Bacula volume), then label it.
424 * Enter with the mutex set
426 static void label_volume_if_ok(DCR *dcr, char *oldname,
427 char *newname, char *poolname,
428 int slot, int relabel)
430 BSOCK *dir = dcr->jcr->dir_bsock;
432 DEVICE *dev = dcr->dev;
435 const char *volname = (relabel == 1) ? oldname : newname;
438 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
439 Dmsg1(100, "Stole device %s lock, writing label.\n", dev->print_name());
442 Dmsg0(90, "try_autoload_device - looking for volume_info\n");
443 if (!try_autoload_device(dcr->jcr, dcr, slot, volname)) {
444 goto bail_out; /* error */
447 /* Ensure that the device is open -- autoload_device() closes it */
448 if (dev->is_tape()) {
449 mode = OPEN_READ_WRITE;
451 mode = CREATE_READ_WRITE;
455 dev->truncating = true; /* let open() know we will truncate it */
457 /* Set old volume name for open if relabeling */
458 bstrncpy(dcr->VolCatInfo.VolCatName, volname, sizeof(dcr->VolCatInfo.VolCatName));
459 if (dev->open(dcr, mode) < 0) {
460 dir->fsend(_("3910 Unable to open device %s: ERR=%s\n"),
461 dev->print_name(), dev->bstrerror());
465 /* See what we have for a Volume */
466 label_status = read_dev_volume_label(dcr);
468 /* Set new volume name */
469 bstrncpy(dcr->VolCatInfo.VolCatName, newname, sizeof(dcr->VolCatInfo.VolCatName));
470 switch(label_status) {
472 case VOL_VERSION_ERROR:
473 case VOL_LABEL_ERROR:
477 "3920 Cannot label Volume because it is already labeled: \"%s\"\n"),
478 dev->VolHdr.VolumeName);
482 /* Relabel request. If oldname matches, continue */
483 if (strcmp(oldname, dev->VolHdr.VolumeName) != 0) {
484 dir->fsend(_("3921 Wrong volume mounted.\n"));
487 if (dev->label_type != B_BACULA_LABEL) {
488 dir->fsend(_("3922 Cannot relabel an ANSI/IBM labeled Volume.\n"));
491 /* Fall through wanted! */
494 if (!write_new_volume_label_to_dev(dcr, newname, poolname,
495 relabel, true /* write dvd now */)) {
496 dir->fsend(_("3912 Failed to label Volume: ERR=%s\n"), dev->bstrerror());
499 bstrncpy(dcr->VolumeName, newname, sizeof(dcr->VolumeName));
500 /* The following 3000 OK label. string is scanned in ua_label.c */
501 dir->fsend("3000 OK label. VolBytes=%s DVD=%d Volume=\"%s\" Device=%s\n",
502 edit_uint64(dev->VolCatInfo.VolCatBytes, ed1),
503 dev->is_dvd()?1:0, newname, dev->print_name());
506 dir->fsend(_("3914 Failed to label Volume (no media): ERR=%s\n"), dev->bstrerror());
509 dir->fsend(_("3913 Cannot label Volume. "
510 "Unknown status %d from read_volume_label()\n"), label_status);
515 if (!dev->is_open()) {
518 volume_unused(dcr); /* no longer using volume */
519 give_back_device_lock(dev, &hold);
525 * Read the tape label
527 * Enter with the mutex set
529 static bool read_label(DCR *dcr)
533 BSOCK *dir = jcr->dir_bsock;
535 DEVICE *dev = dcr->dev;
537 steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
539 dcr->VolumeName[0] = 0;
540 dev->clear_labeled(); /* force read of label */
541 switch (read_dev_volume_label(dcr)) {
543 dir->fsend(_("3001 Mounted Volume: %s\n"), dev->VolHdr.VolumeName);
547 dir->fsend(_("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
548 dev->print_name(), jcr->errmsg);
552 give_back_device_lock(dev, &hold);
557 * Searches for device by name, and if found, creates a dcr and
560 static DCR *find_device(JCR *jcr, POOL_MEM &devname, int drive)
563 AUTOCHANGER *changer;
567 unbash_spaces(devname);
568 foreach_res(device, R_DEVICE) {
569 /* Find resource, and make sure we were able to open it */
570 if (strcmp(device->hdr.name, devname.c_str()) == 0) {
572 device->dev = init_dev(jcr, device);
575 Jmsg(jcr, M_WARNING, 0, _("\n"
576 " Device \"%s\" requested by DIR could not be opened or does not exist.\n"),
580 Dmsg1(20, "Found device %s\n", device->hdr.name);
586 foreach_res(changer, R_AUTOCHANGER) {
587 /* Find resource, and make sure we were able to open it */
588 if (strcmp(devname.c_str(), changer->hdr.name) == 0) {
589 /* Try each device in this AutoChanger */
590 foreach_alist(device, changer->device) {
591 Dmsg1(100, "Try changer device %s\n", device->hdr.name);
593 device->dev = init_dev(jcr, device);
596 Dmsg1(100, "Device %s could not be opened. Skipped\n", devname.c_str());
597 Jmsg(jcr, M_WARNING, 0, _("\n"
598 " Device \"%s\" in changer \"%s\" requested by DIR could not be opened or does not exist.\n"),
599 device->hdr.name, devname.c_str());
602 if (!device->dev->autoselect) {
603 Dmsg1(100, "Device %s not autoselect skipped.\n", devname.c_str());
604 continue; /* device is not available */
606 if (drive < 0 || drive == (int)device->dev->drive_index) {
607 Dmsg1(20, "Found changer device %s\n", device->hdr.name);
611 Dmsg3(100, "Device %s drive wrong: want=%d got=%d skipping\n",
612 devname.c_str(), drive, (int)device->dev->drive_index);
614 break; /* we found it but could not open a device */
620 Dmsg1(100, "Found device %s\n", device->hdr.name);
621 dcr = new_dcr(jcr, NULL, device->dev);
622 dcr->device = device;
629 * Mount command from Director
631 static bool mount_cmd(JCR *jcr)
634 BSOCK *dir = jcr->dir_bsock;
641 ok = sscanf(dir->msg, "mount %127s drive=%d slot=%d", devname.c_str(),
644 ok = sscanf(dir->msg, "mount %127s drive=%d", devname.c_str(), &drive) == 2;
647 dcr = find_device(jcr, devname, drive);
650 dev->dlock(); /* Use P to avoid indefinite block */
651 Dmsg1(100, "mount cmd blocked=%d\n", dev->blocked());
652 switch (dev->blocked()) { /* device blocked? */
653 case BST_WAITING_FOR_SYSOP:
654 /* Someone is waiting, wake him */
655 Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
656 dev->set_blocked(BST_MOUNT);
657 dir->fsend("3001 OK mount. Device=%s\n",
659 pthread_cond_broadcast(&dev->wait_next_vol);
660 Dmsg1(100, "JobId=%u broadcast wait_device_release\n", (uint32_t)dcr->jcr->JobId);
661 pthread_cond_broadcast(&wait_device_release);
664 /* In both of these two cases, we (the user) unmounted the Volume */
665 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
667 if (dev->is_autochanger() && slot > 0) {
668 try_autoload_device(jcr, dcr, slot, "");
670 /* We freed the device, so reopen it and wake any waiting threads */
671 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
672 dir->fsend(_("3901 open device failed: ERR=%s\n"),
674 if (dev->blocked() == BST_UNMOUNTED) {
675 /* We blocked the device, so unblock it */
676 Dmsg0(100, "Unmounted. Unblocking device\n");
681 read_dev_volume_label(dcr);
682 if (dev->blocked() == BST_UNMOUNTED) {
683 /* We blocked the device, so unblock it */
684 Dmsg0(100, "Unmounted. Unblocking device\n");
685 read_label(dcr); /* this should not be necessary */
688 Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
689 dev->set_blocked(BST_MOUNT);
691 if (dev->is_labeled()) {
692 dir->fsend(_("3001 Device %s is mounted with Volume \"%s\"\n"),
693 dev->print_name(), dev->VolHdr.VolumeName);
695 dir->fsend(_("3905 Device %s open but no Bacula volume is mounted.\n"
696 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
699 pthread_cond_broadcast(&dev->wait_next_vol);
700 Dmsg1(100, "JobId=%u broadcast wait_device_release\n", (uint32_t)dcr->jcr->JobId);
701 pthread_cond_broadcast(&wait_device_release);
704 case BST_DOING_ACQUIRE:
705 dir->fsend(_("3001 Device %s is doing acquire.\n"),
709 case BST_WRITING_LABEL:
710 dir->fsend(_("3903 Device %s is being labeled.\n"),
714 case BST_NOT_BLOCKED:
715 if (dev->is_autochanger() && slot > 0) {
716 try_autoload_device(jcr, dcr, slot, "");
718 if (dev->is_open()) {
719 if (dev->is_labeled()) {
720 dir->fsend(_("3001 Device %s is mounted with Volume \"%s\"\n"),
721 dev->print_name(), dev->VolHdr.VolumeName);
723 dir->fsend(_("3905 Device %s open but no Bacula volume is mounted.\n"
724 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
727 } else if (dev->is_tape()) {
728 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
729 dir->fsend(_("3901 open device failed: ERR=%s\n"),
734 if (dev->is_labeled()) {
735 dir->fsend(_("3001 Device %s is already mounted with Volume \"%s\"\n"),
736 dev->print_name(), dev->VolHdr.VolumeName);
738 dir->fsend(_("3905 Device %s open but no Bacula volume is mounted.\n"
739 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
742 } else if (dev->is_unmountable()) {
744 dir->fsend(_("3002 Device %s is mounted.\n"),
747 dir->fsend(_("3907 %s"), dev->bstrerror());
749 } else { /* must be file */
750 dir->fsend(_("3906 File device %s is always mounted.\n"),
756 dir->fsend(_("3905 Bizarre wait state %d\n"), dev->blocked());
762 dir->fsend(_("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
765 pm_strcpy(jcr->errmsg, dir->msg);
766 dir->fsend(_("3909 Error scanning mount command: %s\n"), jcr->errmsg);
768 dir->signal(BNET_EOD);
773 * unmount command from Director
775 static bool unmount_cmd(JCR *jcr)
778 BSOCK *dir = jcr->dir_bsock;
783 if (sscanf(dir->msg, "unmount %127s drive=%d", devname.c_str(), &drive) == 2) {
784 dcr = find_device(jcr, devname, drive);
787 dev->dlock(); /* Use P to avoid indefinite block */
788 if (!dev->is_open()) {
789 if (!dev->is_busy()) {
790 unload_autochanger(dcr, -1);
792 if (dev->is_unmountable()) {
793 if (dev->unmount(0)) {
794 dir->fsend(_("3002 Device %s unmounted.\n"),
797 dir->fsend(_("3907 %s"), dev->bstrerror());
800 Dmsg0(90, "Device already unmounted\n");
801 dir->fsend(_("3901 Device %s is already unmounted.\n"),
804 } else if (dev->blocked() == BST_WAITING_FOR_SYSOP) {
805 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
807 if (!unload_autochanger(dcr, -1)) {
808 /* ***FIXME**** what is this ???? */
811 if (dev->is_unmountable() && !dev->unmount(0)) {
812 dir->fsend(_("3907 %s"), dev->bstrerror());
814 dev->set_blocked(BST_UNMOUNTED_WAITING_FOR_SYSOP);
815 dir->fsend(_("3001 Device %s unmounted.\n"),
819 } else if (dev->blocked() == BST_DOING_ACQUIRE) {
820 dir->fsend(_("3902 Device %s is busy in acquire.\n"),
823 } else if (dev->blocked() == BST_WRITING_LABEL) {
824 dir->fsend(_("3903 Device %s is being labeled.\n"),
827 } else if (dev->is_busy()) {
828 send_dir_busy_message(dir, dev);
829 } else { /* device not being used */
830 Dmsg0(90, "Device not in use, unmounting\n");
831 /* On FreeBSD, I am having ASSERT() failures in block_device()
832 * and I can only imagine that the thread id that we are
833 * leaving in no_wait_id is being re-used. So here,
834 * we simply do it by hand. Gross, but a solution.
836 /* block_device(dev, BST_UNMOUNTED); replace with 2 lines below */
837 dev->set_blocked(BST_UNMOUNTED);
839 if (!unload_autochanger(dcr, -1)) {
842 if (dev->is_unmountable() && !dev->unmount(0)) {
843 dir->fsend(_("3907 %s"), dev->bstrerror());
845 dir->fsend(_("3002 Device %s unmounted.\n"),
852 dir->fsend(_("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
855 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
856 pm_strcpy(jcr->errmsg, dir->msg);
857 dir->fsend(_("3907 Error scanning unmount command: %s\n"), jcr->errmsg);
859 dir->signal(BNET_EOD);
864 * Release command from Director. This rewinds the device and if
865 * configured does a offline and ensures that Bacula will
866 * re-read the label of the tape before continuing. This gives
867 * the operator the chance to change the tape anytime before the
870 static bool release_cmd(JCR *jcr)
873 BSOCK *dir = jcr->dir_bsock;
878 if (sscanf(dir->msg, "release %127s drive=%d", devname.c_str(), &drive) == 2) {
879 dcr = find_device(jcr, devname, drive);
882 dev->dlock(); /* Use P to avoid indefinite block */
883 if (!dev->is_open()) {
884 if (!dev->is_busy()) {
885 unload_autochanger(dcr, -1);
887 Dmsg0(90, "Device already released\n");
888 dir->fsend(_("3921 Device %s already released.\n"),
891 } else if (dev->blocked() == BST_WAITING_FOR_SYSOP) {
892 Dmsg2(90, "%d waiter dev_block=%d.\n", dev->num_waiting,
894 unload_autochanger(dcr, -1);
895 dir->fsend(_("3922 Device %s waiting for sysop.\n"),
898 } else if (dev->blocked() == BST_UNMOUNTED_WAITING_FOR_SYSOP) {
899 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
901 dir->fsend(_("3922 Device %s waiting for mount.\n"),
904 } else if (dev->blocked() == BST_DOING_ACQUIRE) {
905 dir->fsend(_("3923 Device %s is busy in acquire.\n"),
908 } else if (dev->blocked() == BST_WRITING_LABEL) {
909 dir->fsend(_("3914 Device %s is being labeled.\n"),
912 } else if (dev->is_busy()) {
913 send_dir_busy_message(dir, dev);
914 } else { /* device not being used */
915 Dmsg0(90, "Device not in use, releaseing\n");
916 unload_autochanger(dcr, -1);
918 dir->fsend(_("3022 Device %s released.\n"),
924 dir->fsend(_("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
927 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
928 pm_strcpy(jcr->errmsg, dir->msg);
929 dir->fsend(_("3927 Error scanning release command: %s\n"), jcr->errmsg);
931 dir->signal(BNET_EOD);
936 static bool bootstrap_cmd(JCR *jcr)
938 return get_bootstrap_file(jcr, jcr->dir_bsock);
942 * Autochanger command from Director
944 static bool changer_cmd(JCR *jcr)
947 BSOCK *dir = jcr->dir_bsock;
950 const char *cmd = NULL;
953 * A safe_cmd may call autochanger script but does not load/unload
954 * slots so it can be done at the same time that the drive is open.
956 bool safe_cmd = false;
958 if (sscanf(dir->msg, "autochanger list %127s", devname.c_str()) == 1) {
960 safe_cmd = ok = true;
961 } else if (sscanf(dir->msg, "autochanger slots %127s", devname.c_str()) == 1) {
963 safe_cmd = ok = true;
964 } else if (sscanf(dir->msg, "autochanger drives %127s", devname.c_str()) == 1) {
966 safe_cmd = ok = true;
969 dcr = find_device(jcr, devname, -1);
972 dev->dlock(); /* Use P to avoid indefinite block */
973 if (!dev->device->changer_res) {
974 dir->fsend(_("3995 Device %s is not an autochanger.\n"),
976 /* Under certain "safe" conditions, we can steal the lock */
977 } else if (safe_cmd || !dev->is_open() || dev->can_steal_lock()) {
978 autochanger_cmd(dcr, dir, cmd);
979 } else if (dev->is_busy() || dev->is_blocked()) {
980 send_dir_busy_message(dir, dev);
981 } else { /* device not being used */
982 autochanger_cmd(dcr, dir, cmd);
987 dir->fsend(_("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
989 } else { /* error on scanf */
990 pm_strcpy(jcr->errmsg, dir->msg);
991 dir->fsend(_("3908 Error scanning autocharger drives/list/slots command: %s\n"),
994 dir->signal(BNET_EOD);
999 * Read and return the Volume label
1001 static bool readlabel_cmd(JCR *jcr)
1004 BSOCK *dir = jcr->dir_bsock;
1010 if (sscanf(dir->msg, "readlabel %127s Slot=%d drive=%d", devname.c_str(),
1011 &Slot, &drive) == 3) {
1012 dcr = find_device(jcr, devname, drive);
1015 dev->dlock(); /* Use P to avoid indefinite block */
1016 if (!dev->is_open()) {
1017 read_volume_label(jcr, dcr, dev, Slot);
1019 /* Under certain "safe" conditions, we can steal the lock */
1020 } else if (dev->can_steal_lock()) {
1021 read_volume_label(jcr, dcr, dev, Slot);
1022 } else if (dev->is_busy() || dev->is_blocked()) {
1023 send_dir_busy_message(dir, dev);
1024 } else { /* device not being used */
1025 read_volume_label(jcr, dcr, dev, Slot);
1030 dir->fsend(_("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
1033 pm_strcpy(jcr->errmsg, dir->msg);
1034 dir->fsend(_("3909 Error scanning readlabel command: %s\n"), jcr->errmsg);
1036 dir->signal(BNET_EOD);
1042 * Read the tape label
1044 * Enter with the mutex set
1046 static void read_volume_label(JCR *jcr, DCR *dcr, DEVICE *dev, int Slot)
1048 BSOCK *dir = jcr->dir_bsock;
1052 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
1054 if (!try_autoload_device(jcr, dcr, Slot, "")) {
1055 goto bail_out; /* error */
1058 dev->clear_labeled(); /* force read of label */
1059 switch (read_dev_volume_label(dcr)) {
1061 /* DO NOT add quotes around the Volume name. It is scanned in the DIR */
1062 dir->fsend(_("3001 Volume=%s Slot=%d\n"), dev->VolHdr.VolumeName, Slot);
1063 Dmsg1(100, "Volume: %s\n", dev->VolHdr.VolumeName);
1066 dir->fsend(_("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
1067 dev->print_name(), jcr->errmsg);
1072 give_back_device_lock(dev, &hold);
1076 static bool try_autoload_device(JCR *jcr, DCR *dcr, int slot, const char *VolName)
1078 BSOCK *dir = jcr->dir_bsock;
1080 bstrncpy(dcr->VolumeName, VolName, sizeof(dcr->VolumeName));
1081 dcr->VolCatInfo.Slot = slot;
1082 dcr->VolCatInfo.InChanger = slot > 0;
1083 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
1089 static void send_dir_busy_message(BSOCK *dir, DEVICE *dev)
1091 if (dev->is_blocked()) {
1092 switch (dev->blocked()) {
1094 dir->fsend(_("3931 Device %s is BLOCKED. user unmounted.\n"),
1097 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
1098 dir->fsend(_("3932 Device %s is BLOCKED. user unmounted during wait for media/mount.\n"),
1101 case BST_WAITING_FOR_SYSOP:
1102 dir->fsend(_("3933 Device %s is BLOCKED waiting for media.\n"),
1105 case BST_DOING_ACQUIRE:
1106 dir->fsend(_("3934 Device %s is being initialized.\n"),
1109 case BST_WRITING_LABEL:
1110 dir->fsend(_("3935 Device %s is blocked labeling a Volume.\n"),
1114 dir->fsend(_("3935 Device %s is blocked for unknown reason.\n"),
1118 } else if (dev->can_read()) {
1119 dir->fsend(_("3936 Device %s is busy reading.\n"),
1120 dev->print_name());;
1122 dir->fsend(_("3937 Device %s is busy with %d writer(s).\n"),
1123 dev->print_name(), dev->num_writers);