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 Dmsg1(100, "JobId=%u broadcast wait_device_release\n", (uint32_t)jcr->JobId);
311 pthread_cond_broadcast(&wait_device_release);
313 if (jcr->read_dcr && jcr->read_dcr->dev && jcr->read_dcr->dev->waiting_for_mount()) {
314 pthread_cond_broadcast(&jcr->read_dcr->dev->wait_next_vol);
315 Dmsg1(100, "JobId=%u broadcast wait_device_release\n", (uint32_t)jcr->JobId);
316 pthread_cond_broadcast(&wait_device_release);
318 Jmsg(jcr, M_INFO, 0, _("Job %s marked to be canceled.\n"), jcr->Job);
319 bnet_fsend(dir, _("3000 Job %s marked to be canceled.\n"), jcr->Job);
323 bnet_fsend(dir, _("3903 Error scanning cancel command.\n"));
325 bnet_sig(dir, BNET_EOD);
333 static bool label_cmd(JCR *jcr)
335 return do_label(jcr, 0);
338 static bool relabel_cmd(JCR *jcr)
340 return do_label(jcr, 1);
343 static bool do_label(JCR *jcr, int relabel)
345 POOLMEM *newname, *oldname, *poolname, *mtype;
347 BSOCK *dir = jcr->dir_bsock;
354 newname = get_memory(dir->msglen+1);
355 oldname = get_memory(dir->msglen+1);
356 poolname = get_memory(dir->msglen+1);
357 mtype = get_memory(dir->msglen+1);
359 if (sscanf(dir->msg, "relabel %127s OldName=%127s NewName=%127s PoolName=%127s "
360 "MediaType=%127s Slot=%d drive=%d",
361 dev_name.c_str(), oldname, newname, poolname, mtype,
362 &slot, &drive) == 7) {
367 if (sscanf(dir->msg, "label %127s VolumeName=%127s PoolName=%127s "
368 "MediaType=%127s Slot=%d drive=%d",
369 dev_name.c_str(), newname, poolname, mtype, &slot, &drive) == 6) {
374 unbash_spaces(newname);
375 unbash_spaces(oldname);
376 unbash_spaces(poolname);
377 unbash_spaces(mtype);
378 dcr = find_device(jcr, dev_name, drive);
381 dev->dlock(); /* Use P to avoid indefinite block */
382 if (!dev->is_open()) {
383 Dmsg1(400, "Can %slabel. Device is not open\n", relabel?"re":"");
384 label_volume_if_ok(dcr, oldname, newname, poolname, slot, relabel);
386 /* Under certain "safe" conditions, we can steal the lock */
387 } else if (dev->can_steal_lock()) {
388 Dmsg0(400, "Can relabel. can_steal_lock\n");
389 label_volume_if_ok(dcr, oldname, newname, poolname, slot, relabel);
390 } else if (dev->is_busy() || dev->is_blocked()) {
391 send_dir_busy_message(dir, dev);
392 } else { /* device not being used */
393 Dmsg0(400, "Can relabel. device not used\n");
394 label_volume_if_ok(dcr, oldname, newname, poolname, slot, relabel);
400 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), dev_name.c_str());
403 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
404 pm_strcpy(jcr->errmsg, dir->msg);
405 bnet_fsend(dir, _("3903 Error scanning label command: %s\n"), jcr->errmsg);
407 free_memory(oldname);
408 free_memory(newname);
409 free_memory(poolname);
411 bnet_sig(dir, BNET_EOD);
416 * Read the tape label and determine if we can safely
417 * label the tape (not a Bacula volume), then label it.
419 * Enter with the mutex set
421 static void label_volume_if_ok(DCR *dcr, char *oldname,
422 char *newname, char *poolname,
423 int slot, int relabel)
425 BSOCK *dir = dcr->jcr->dir_bsock;
427 DEVICE *dev = dcr->dev;
430 const char *volname = (relabel == 1) ? oldname : newname;
433 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
434 Dmsg1(100, "Stole device %s lock, writing label.\n", dev->print_name());
437 Dmsg0(90, "try_autoload_device - looking for volume_info\n");
438 if (!try_autoload_device(dcr->jcr, slot, volname)) {
439 goto bail_out; /* error */
442 /* Ensure that the device is open -- autoload_device() closes it */
443 if (dev->is_tape()) {
444 mode = OPEN_READ_WRITE;
446 mode = CREATE_READ_WRITE;
450 dev->truncating = true; /* let open() know we will truncate it */
452 /* Set old volume name for open if relabeling */
453 bstrncpy(dcr->VolCatInfo.VolCatName, volname, sizeof(dcr->VolCatInfo.VolCatName));
454 if (dev->open(dcr, mode) < 0) {
455 bnet_fsend(dir, _("3910 Unable to open device %s: ERR=%s\n"),
456 dev->print_name(), dev->strerror());
460 /* See what we have for a Volume */
461 label_status = read_dev_volume_label(dcr);
463 /* Set new volume name */
464 bstrncpy(dcr->VolCatInfo.VolCatName, newname, sizeof(dcr->VolCatInfo.VolCatName));
465 switch(label_status) {
467 case VOL_VERSION_ERROR:
468 case VOL_LABEL_ERROR:
472 "3920 Cannot label Volume because it is already labeled: \"%s\"\n"),
473 dev->VolHdr.VolumeName);
477 /* Relabel request. If oldname matches, continue */
478 if (strcmp(oldname, dev->VolHdr.VolumeName) != 0) {
479 bnet_fsend(dir, _("3921 Wrong volume mounted.\n"));
482 if (dev->label_type != B_BACULA_LABEL) {
483 bnet_fsend(dir, _("3922 Cannot relabel an ANSI/IBM labeled Volume.\n"));
486 /* Fall through wanted! */
489 if (!write_new_volume_label_to_dev(dcr, newname, poolname,
490 relabel, true /* write dvd now */)) {
491 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), dev->bstrerror());
494 bstrncpy(dcr->VolumeName, newname, sizeof(dcr->VolumeName));
495 /* The following 3000 OK label. string is scanned in ua_label.c */
496 bnet_fsend(dir, "3000 OK label. VolBytes=%s DVD=%d Volume=\"%s\" Device=%s\n",
497 edit_uint64(dev->VolCatInfo.VolCatBytes, ed1),
498 dev->is_dvd()?1:0, newname, dev->print_name());
501 bnet_fsend(dir, _("3914 Failed to label Volume (no media): ERR=%s\n"), dev->bstrerror());
504 bnet_fsend(dir, _("3913 Cannot label Volume. "
505 "Unknown status %d from read_volume_label()\n"), label_status);
510 if (!dev->is_open()) {
513 give_back_device_lock(dev, &hold);
519 * Read the tape label
521 * Enter with the mutex set
523 static bool read_label(DCR *dcr)
527 BSOCK *dir = jcr->dir_bsock;
529 DEVICE *dev = dcr->dev;
531 steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
533 dcr->VolumeName[0] = 0;
534 dev->clear_labeled(); /* force read of label */
535 switch (read_dev_volume_label(dcr)) {
537 bnet_fsend(dir, _("3001 Mounted Volume: %s\n"), dev->VolHdr.VolumeName);
541 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
542 dev->print_name(), jcr->errmsg);
546 give_back_device_lock(dev, &hold);
551 * Searches for device by name, and if found, creates a dcr and
554 static DCR *find_device(JCR *jcr, POOL_MEM &devname, int drive)
557 AUTOCHANGER *changer;
561 unbash_spaces(devname);
562 foreach_res(device, R_DEVICE) {
563 /* Find resource, and make sure we were able to open it */
564 if (fnmatch(device->hdr.name, devname.c_str(), 0) == 0) {
566 device->dev = init_dev(jcr, device);
569 Jmsg(jcr, M_WARNING, 0, _("\n"
570 " Device \"%s\" requested by DIR could not be opened or does not exist.\n"),
574 Dmsg1(20, "Found device %s\n", device->hdr.name);
580 foreach_res(changer, R_AUTOCHANGER) {
581 /* Find resource, and make sure we were able to open it */
582 if (fnmatch(devname.c_str(), changer->hdr.name, 0) == 0) {
583 /* Try each device in this AutoChanger */
584 foreach_alist(device, changer->device) {
585 Dmsg1(100, "Try changer device %s\n", device->hdr.name);
587 device->dev = init_dev(jcr, device);
590 Dmsg1(100, "Device %s could not be opened. Skipped\n", devname.c_str());
591 Jmsg(jcr, M_WARNING, 0, _("\n"
592 " Device \"%s\" in changer \"%s\" requested by DIR could not be opened or does not exist.\n"),
593 device->hdr.name, devname.c_str());
596 if (!device->dev->autoselect) {
597 Dmsg1(100, "Device %s not autoselect skipped.\n", devname.c_str());
598 continue; /* device is not available */
600 if (drive < 0 || drive == (int)device->dev->drive_index) {
601 Dmsg1(20, "Found changer device %s\n", device->hdr.name);
605 Dmsg3(100, "Device %s drive wrong: want=%d got=%d skipping\n",
606 devname.c_str(), drive, (int)device->dev->drive_index);
608 break; /* we found it but could not open a device */
614 Dmsg1(100, "Found device %s\n", device->hdr.name);
615 dcr = new_dcr(jcr, device->dev);
616 dcr->device = device;
624 * Mount command from Director
626 static bool mount_cmd(JCR *jcr)
629 BSOCK *dir = jcr->dir_bsock;
636 ok = sscanf(dir->msg, "mount %127s drive=%d slot=%d", devname.c_str(),
639 ok = sscanf(dir->msg, "mount %127s drive=%d", devname.c_str(), &drive) == 2;
642 dcr = find_device(jcr, devname, drive);
645 dev->dlock(); /* Use P to avoid indefinite block */
646 Dmsg1(100, "mount cmd blocked=%d\n", dev->blocked());
647 switch (dev->blocked()) { /* device blocked? */
648 case BST_WAITING_FOR_SYSOP:
649 /* Someone is waiting, wake him */
650 Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
651 dev->set_blocked(BST_MOUNT);
652 bnet_fsend(dir, "3001 OK mount. Device=%s\n",
654 pthread_cond_broadcast(&dev->wait_next_vol);
655 Dmsg1(100, "JobId=%u broadcast wait_device_release\n", (uint32_t)dcr->jcr->JobId);
656 pthread_cond_broadcast(&wait_device_release);
659 /* In both of these two cases, we (the user) unmounted the Volume */
660 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
662 if (dev->is_autochanger() && slot > 0) {
663 try_autoload_device(jcr, slot, "");
665 /* We freed the device, so reopen it and wake any waiting threads */
666 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
667 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
669 if (dev->blocked() == BST_UNMOUNTED) {
670 /* We blocked the device, so unblock it */
671 Dmsg0(100, "Unmounted. Unblocking device\n");
676 read_dev_volume_label(dcr);
677 if (dev->blocked() == BST_UNMOUNTED) {
678 /* We blocked the device, so unblock it */
679 Dmsg0(100, "Unmounted. Unblocking device\n");
680 read_label(dcr); /* this should not be necessary */
683 Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
684 dev->set_blocked(BST_MOUNT);
686 if (dev->is_labeled()) {
687 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
688 dev->print_name(), dev->VolHdr.VolumeName);
690 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
691 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
694 pthread_cond_broadcast(&dev->wait_next_vol);
695 Dmsg1(100, "JobId=%u broadcast wait_device_release\n", (uint32_t)dcr->jcr->JobId);
696 pthread_cond_broadcast(&wait_device_release);
699 case BST_DOING_ACQUIRE:
700 bnet_fsend(dir, _("3001 Device %s is doing acquire.\n"),
704 case BST_WRITING_LABEL:
705 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
709 case BST_NOT_BLOCKED:
710 if (dev->is_autochanger() && slot > 0) {
711 try_autoload_device(jcr, slot, "");
713 if (dev->is_open()) {
714 if (dev->is_labeled()) {
715 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
716 dev->print_name(), dev->VolHdr.VolumeName);
718 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
719 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
722 } else if (dev->is_tape()) {
723 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
724 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
729 if (dev->is_labeled()) {
730 bnet_fsend(dir, _("3001 Device %s is already mounted with Volume \"%s\"\n"),
731 dev->print_name(), dev->VolHdr.VolumeName);
733 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
734 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
737 } else if (dev->is_dvd()) {
739 bnet_fsend(dir, _("3002 Device %s is mounted.\n"),
742 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
744 } else { /* must be file */
745 bnet_fsend(dir, _("3906 File device %s is always mounted.\n"),
751 bnet_fsend(dir, _("3905 Bizarre wait state %d\n"), dev->blocked());
758 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
761 pm_strcpy(jcr->errmsg, dir->msg);
762 bnet_fsend(dir, _("3909 Error scanning mount command: %s\n"), jcr->errmsg);
764 bnet_sig(dir, BNET_EOD);
769 * unmount command from Director
771 static bool unmount_cmd(JCR *jcr)
774 BSOCK *dir = jcr->dir_bsock;
779 if (sscanf(dir->msg, "unmount %127s drive=%d", devname.c_str(), &drive) == 2) {
780 dcr = find_device(jcr, devname, drive);
783 dev->dlock(); /* Use P to avoid indefinite block */
784 if (!dev->is_open()) {
785 if (!dev->is_busy()) {
786 unload_autochanger(dcr, -1);
789 if (dev->unmount(0)) {
790 bnet_fsend(dir, _("3002 Device %s unmounted.\n"),
793 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
796 Dmsg0(90, "Device already unmounted\n");
797 bnet_fsend(dir, _("3901 Device %s is already unmounted.\n"),
800 } else if (dev->blocked() == BST_WAITING_FOR_SYSOP) {
801 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
803 if (!unload_autochanger(dcr, -1)) {
804 /* ***FIXME**** what is this ???? */
807 if (dev->is_dvd() && !dev->unmount(0)) {
808 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
810 dev->set_blocked(BST_UNMOUNTED_WAITING_FOR_SYSOP);
811 bnet_fsend(dir, _("3001 Device %s unmounted.\n"),
815 } else if (dev->blocked() == BST_DOING_ACQUIRE) {
816 bnet_fsend(dir, _("3902 Device %s is busy in acquire.\n"),
819 } else if (dev->blocked() == BST_WRITING_LABEL) {
820 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
823 } else if (dev->is_busy()) {
824 send_dir_busy_message(dir, dev);
825 } else { /* device not being used */
826 Dmsg0(90, "Device not in use, unmounting\n");
827 /* On FreeBSD, I am having ASSERT() failures in block_device()
828 * and I can only imagine that the thread id that we are
829 * leaving in no_wait_id is being re-used. So here,
830 * we simply do it by hand. Gross, but a solution.
832 /* block_device(dev, BST_UNMOUNTED); replace with 2 lines below */
833 dev->set_blocked(BST_UNMOUNTED);
835 if (!unload_autochanger(dcr, -1)) {
838 if (dev->is_dvd() && !dev->unmount(0)) {
839 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
841 bnet_fsend(dir, _("3002 Device %s unmounted.\n"),
849 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
852 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
853 pm_strcpy(jcr->errmsg, dir->msg);
854 bnet_fsend(dir, _("3907 Error scanning unmount command: %s\n"), jcr->errmsg);
856 bnet_sig(dir, BNET_EOD);
861 * Release command from Director. This rewinds the device and if
862 * configured does a offline and ensures that Bacula will
863 * re-read the label of the tape before continuing. This gives
864 * the operator the chance to change the tape anytime before the
867 static bool release_cmd(JCR *jcr)
870 BSOCK *dir = jcr->dir_bsock;
875 if (sscanf(dir->msg, "release %127s drive=%d", devname.c_str(), &drive) == 2) {
876 dcr = find_device(jcr, devname, drive);
879 dev->dlock(); /* Use P to avoid indefinite block */
880 if (!dev->is_open()) {
881 if (!dev->is_busy()) {
882 unload_autochanger(dcr, -1);
884 Dmsg0(90, "Device already released\n");
885 bnet_fsend(dir, _("3921 Device %s already released.\n"),
888 } else if (dev->blocked() == BST_WAITING_FOR_SYSOP) {
889 Dmsg2(90, "%d waiter dev_block=%d.\n", dev->num_waiting,
891 unload_autochanger(dcr, -1);
892 bnet_fsend(dir, _("3922 Device %s waiting for sysop.\n"),
895 } else if (dev->blocked() == BST_UNMOUNTED_WAITING_FOR_SYSOP) {
896 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
898 bnet_fsend(dir, _("3922 Device %s waiting for mount.\n"),
901 } else if (dev->blocked() == BST_DOING_ACQUIRE) {
902 bnet_fsend(dir, _("3923 Device %s is busy in acquire.\n"),
905 } else if (dev->blocked() == BST_WRITING_LABEL) {
906 bnet_fsend(dir, _("3914 Device %s is being labeled.\n"),
909 } else if (dev->is_busy()) {
910 send_dir_busy_message(dir, dev);
911 } else { /* device not being used */
912 Dmsg0(90, "Device not in use, releaseing\n");
913 unload_autochanger(dcr, -1);
915 bnet_fsend(dir, _("3022 Device %s released.\n"),
922 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
925 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
926 pm_strcpy(jcr->errmsg, dir->msg);
927 bnet_fsend(dir, _("3927 Error scanning release command: %s\n"), jcr->errmsg);
929 bnet_sig(dir, BNET_EOD);
934 static bool bootstrap_cmd(JCR *jcr)
936 return get_bootstrap_file(jcr, jcr->dir_bsock);
940 * Autochanger command from Director
942 static bool changer_cmd(JCR *jcr)
945 BSOCK *dir = jcr->dir_bsock;
948 const char *cmd = NULL;
951 * A safe_cmd may call autochanger script but does not load/unload
952 * slots so it can be done at the same time that the drive is open.
954 bool safe_cmd = false;
956 if (sscanf(dir->msg, "autochanger list %127s", devname.c_str()) == 1) {
958 safe_cmd = ok = true;
959 } else if (sscanf(dir->msg, "autochanger slots %127s", devname.c_str()) == 1) {
961 safe_cmd = ok = true;
962 } else if (sscanf(dir->msg, "autochanger drives %127s", devname.c_str()) == 1) {
964 safe_cmd = ok = true;
967 dcr = find_device(jcr, devname, -1);
970 dev->dlock(); /* Use P to avoid indefinite block */
971 if (!dev->device->changer_res) {
972 bnet_fsend(dir, _("3995 Device %s is not an autochanger.\n"),
974 /* Under certain "safe" conditions, we can steal the lock */
975 } else if (safe_cmd || !dev->is_open() || dev->can_steal_lock()) {
976 autochanger_cmd(dcr, dir, cmd);
977 } else if (dev->is_busy() || dev->is_blocked()) {
978 send_dir_busy_message(dir, dev);
979 } else { /* device not being used */
980 autochanger_cmd(dcr, dir, cmd);
986 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
988 } else { /* error on scanf */
989 pm_strcpy(jcr->errmsg, dir->msg);
990 bnet_fsend(dir, _("3908 Error scanning autocharger drives/list/slots command: %s\n"),
993 dir->signal(BNET_EOD);
998 * Read and return the Volume label
1000 static bool readlabel_cmd(JCR *jcr)
1003 BSOCK *dir = jcr->dir_bsock;
1009 if (sscanf(dir->msg, "readlabel %127s Slot=%d drive=%d", devname.c_str(),
1010 &Slot, &drive) == 3) {
1011 dcr = find_device(jcr, devname, drive);
1014 dev->dlock(); /* Use P to avoid indefinite block */
1015 if (!dev->is_open()) {
1016 read_volume_label(jcr, dev, Slot);
1018 /* Under certain "safe" conditions, we can steal the lock */
1019 } else if (dev->can_steal_lock()) {
1020 read_volume_label(jcr, dev, Slot);
1021 } else if (dev->is_busy() || dev->is_blocked()) {
1022 send_dir_busy_message(dir, dev);
1023 } else { /* device not being used */
1024 read_volume_label(jcr, dev, Slot);
1030 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
1033 pm_strcpy(jcr->errmsg, dir->msg);
1034 bnet_fsend(dir, _("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, DEVICE *dev, int Slot)
1048 BSOCK *dir = jcr->dir_bsock;
1050 DCR *dcr = jcr->dcr;
1053 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
1055 if (!try_autoload_device(jcr, Slot, "")) {
1056 goto bail_out; /* error */
1059 dev->clear_labeled(); /* force read of label */
1060 switch (read_dev_volume_label(dcr)) {
1062 /* DO NOT add quotes around the Volume name. It is scanned in the DIR */
1063 bnet_fsend(dir, _("3001 Volume=%s Slot=%d\n"), dev->VolHdr.VolumeName, Slot);
1064 Dmsg1(100, "Volume: %s\n", dev->VolHdr.VolumeName);
1067 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
1068 dev->print_name(), jcr->errmsg);
1073 give_back_device_lock(dev, &hold);
1077 static bool try_autoload_device(JCR *jcr, int slot, const char *VolName)
1079 DCR *dcr = jcr->dcr;
1080 BSOCK *dir = jcr->dir_bsock;
1082 bstrncpy(dcr->VolumeName, VolName, sizeof(dcr->VolumeName));
1083 dcr->VolCatInfo.Slot = slot;
1084 dcr->VolCatInfo.InChanger = slot > 0;
1085 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
1091 static void send_dir_busy_message(BSOCK *dir, DEVICE *dev)
1093 if (dev->is_blocked()) {
1094 switch (dev->blocked()) {
1096 bnet_fsend(dir, _("3931 Device %s is BLOCKED. user unmounted.\n"),
1099 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
1100 bnet_fsend(dir, _("3932 Device %s is BLOCKED. user unmounted during wait for media/mount.\n"),
1103 case BST_WAITING_FOR_SYSOP:
1104 bnet_fsend(dir, _("3933 Device %s is BLOCKED waiting for media.\n"),
1107 case BST_DOING_ACQUIRE:
1108 bnet_fsend(dir, _("3934 Device %s is being initialized.\n"),
1111 case BST_WRITING_LABEL:
1112 bnet_fsend(dir, _("3935 Device %s is blocked labeling a Volume.\n"),
1116 bnet_fsend(dir, _("3935 Device %s is blocked for unknown reason.\n"),
1120 } else if (dev->can_read()) {
1121 bnet_fsend(dir, _("3936 Device %s is busy reading.\n"),
1122 dev->print_name());;
1124 bnet_fsend(dir, _("3937 Device %s is busy with %d writer(s).\n"),
1125 dev->print_name(), dev->num_writers);