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 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;
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 /* Still waiting for FD to connect, release it */
308 pthread_cond_signal(&jcr->job_start_wait); /* wake waiting job */
310 /* If thread waiting on mount, wake him */
311 if (jcr->dcr && jcr->dcr->dev && jcr->dcr->dev->waiting_for_mount()) {
312 pthread_cond_broadcast(&jcr->dcr->dev->wait_next_vol);
313 Dmsg1(100, "JobId=%u broadcast wait_device_release\n", (uint32_t)jcr->JobId);
314 pthread_cond_broadcast(&wait_device_release);
316 if (jcr->read_dcr && jcr->read_dcr->dev && jcr->read_dcr->dev->waiting_for_mount()) {
317 pthread_cond_broadcast(&jcr->read_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 Jmsg(jcr, M_INFO, 0, _("Job %s marked to be canceled.\n"), jcr->Job);
322 bnet_fsend(dir, _("3000 Job %s marked to be canceled.\n"), jcr->Job);
326 bnet_fsend(dir, _("3903 Error scanning cancel command.\n"));
328 bnet_sig(dir, BNET_EOD);
336 static bool label_cmd(JCR *jcr)
338 return do_label(jcr, 0);
341 static bool relabel_cmd(JCR *jcr)
343 return do_label(jcr, 1);
346 static bool do_label(JCR *jcr, int relabel)
348 POOLMEM *newname, *oldname, *poolname, *mtype;
350 BSOCK *dir = jcr->dir_bsock;
357 newname = get_memory(dir->msglen+1);
358 oldname = get_memory(dir->msglen+1);
359 poolname = get_memory(dir->msglen+1);
360 mtype = get_memory(dir->msglen+1);
362 if (sscanf(dir->msg, "relabel %127s OldName=%127s NewName=%127s PoolName=%127s "
363 "MediaType=%127s Slot=%d drive=%d",
364 dev_name.c_str(), oldname, newname, poolname, mtype,
365 &slot, &drive) == 7) {
370 if (sscanf(dir->msg, "label %127s VolumeName=%127s PoolName=%127s "
371 "MediaType=%127s Slot=%d drive=%d",
372 dev_name.c_str(), newname, poolname, mtype, &slot, &drive) == 6) {
377 unbash_spaces(newname);
378 unbash_spaces(oldname);
379 unbash_spaces(poolname);
380 unbash_spaces(mtype);
381 dcr = find_device(jcr, dev_name, drive);
384 dev->dlock(); /* Use P to avoid indefinite block */
385 if (!dev->is_open()) {
386 Dmsg1(400, "Can %slabel. Device is not open\n", relabel?"re":"");
387 label_volume_if_ok(dcr, oldname, newname, poolname, slot, relabel);
389 /* Under certain "safe" conditions, we can steal the lock */
390 } else if (dev->can_steal_lock()) {
391 Dmsg0(400, "Can relabel. can_steal_lock\n");
392 label_volume_if_ok(dcr, oldname, newname, poolname, slot, relabel);
393 } else if (dev->is_busy() || dev->is_blocked()) {
394 send_dir_busy_message(dir, dev);
395 } else { /* device not being used */
396 Dmsg0(400, "Can relabel. device not used\n");
397 label_volume_if_ok(dcr, oldname, newname, poolname, slot, relabel);
402 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), dev_name.c_str());
405 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
406 pm_strcpy(jcr->errmsg, dir->msg);
407 bnet_fsend(dir, _("3903 Error scanning label command: %s\n"), jcr->errmsg);
409 free_memory(oldname);
410 free_memory(newname);
411 free_memory(poolname);
413 bnet_sig(dir, BNET_EOD);
418 * Read the tape label and determine if we can safely
419 * label the tape (not a Bacula volume), then label it.
421 * Enter with the mutex set
423 static void label_volume_if_ok(DCR *dcr, char *oldname,
424 char *newname, char *poolname,
425 int slot, int relabel)
427 BSOCK *dir = dcr->jcr->dir_bsock;
429 DEVICE *dev = dcr->dev;
432 const char *volname = (relabel == 1) ? oldname : newname;
435 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
436 Dmsg1(100, "Stole device %s lock, writing label.\n", dev->print_name());
439 Dmsg0(90, "try_autoload_device - looking for volume_info\n");
440 if (!try_autoload_device(dcr->jcr, dcr, slot, volname)) {
441 goto bail_out; /* error */
444 /* Ensure that the device is open -- autoload_device() closes it */
445 if (dev->is_tape()) {
446 mode = OPEN_READ_WRITE;
448 mode = CREATE_READ_WRITE;
452 dev->truncating = true; /* let open() know we will truncate it */
454 /* Set old volume name for open if relabeling */
455 bstrncpy(dcr->VolCatInfo.VolCatName, volname, sizeof(dcr->VolCatInfo.VolCatName));
456 if (dev->open(dcr, mode) < 0) {
457 bnet_fsend(dir, _("3910 Unable to open device %s: ERR=%s\n"),
458 dev->print_name(), dev->strerror());
462 /* See what we have for a Volume */
463 label_status = read_dev_volume_label(dcr);
465 /* Set new volume name */
466 bstrncpy(dcr->VolCatInfo.VolCatName, newname, sizeof(dcr->VolCatInfo.VolCatName));
467 switch(label_status) {
469 case VOL_VERSION_ERROR:
470 case VOL_LABEL_ERROR:
474 "3920 Cannot label Volume because it is already labeled: \"%s\"\n"),
475 dev->VolHdr.VolumeName);
479 /* Relabel request. If oldname matches, continue */
480 if (strcmp(oldname, dev->VolHdr.VolumeName) != 0) {
481 bnet_fsend(dir, _("3921 Wrong volume mounted.\n"));
484 if (dev->label_type != B_BACULA_LABEL) {
485 bnet_fsend(dir, _("3922 Cannot relabel an ANSI/IBM labeled Volume.\n"));
488 /* Fall through wanted! */
491 if (!write_new_volume_label_to_dev(dcr, newname, poolname,
492 relabel, true /* write dvd now */)) {
493 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), dev->bstrerror());
496 bstrncpy(dcr->VolumeName, newname, sizeof(dcr->VolumeName));
497 /* The following 3000 OK label. string is scanned in ua_label.c */
498 bnet_fsend(dir, "3000 OK label. VolBytes=%s DVD=%d Volume=\"%s\" Device=%s\n",
499 edit_uint64(dev->VolCatInfo.VolCatBytes, ed1),
500 dev->is_dvd()?1:0, newname, dev->print_name());
503 bnet_fsend(dir, _("3914 Failed to label Volume (no media): ERR=%s\n"), dev->bstrerror());
506 bnet_fsend(dir, _("3913 Cannot label Volume. "
507 "Unknown status %d from read_volume_label()\n"), label_status);
512 if (!dev->is_open()) {
515 give_back_device_lock(dev, &hold);
521 * Read the tape label
523 * Enter with the mutex set
525 static bool read_label(DCR *dcr)
529 BSOCK *dir = jcr->dir_bsock;
531 DEVICE *dev = dcr->dev;
533 steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
535 dcr->VolumeName[0] = 0;
536 dev->clear_labeled(); /* force read of label */
537 switch (read_dev_volume_label(dcr)) {
539 bnet_fsend(dir, _("3001 Mounted Volume: %s\n"), dev->VolHdr.VolumeName);
543 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
544 dev->print_name(), jcr->errmsg);
548 give_back_device_lock(dev, &hold);
553 * Searches for device by name, and if found, creates a dcr and
556 static DCR *find_device(JCR *jcr, POOL_MEM &devname, int drive)
559 AUTOCHANGER *changer;
563 unbash_spaces(devname);
564 foreach_res(device, R_DEVICE) {
565 /* Find resource, and make sure we were able to open it */
566 if (strcmp(device->hdr.name, devname.c_str()) == 0) {
568 device->dev = init_dev(jcr, device);
571 Jmsg(jcr, M_WARNING, 0, _("\n"
572 " Device \"%s\" requested by DIR could not be opened or does not exist.\n"),
576 Dmsg1(20, "Found device %s\n", device->hdr.name);
582 foreach_res(changer, R_AUTOCHANGER) {
583 /* Find resource, and make sure we were able to open it */
584 if (strcmp(devname.c_str(), changer->hdr.name) == 0) {
585 /* Try each device in this AutoChanger */
586 foreach_alist(device, changer->device) {
587 Dmsg1(100, "Try changer device %s\n", device->hdr.name);
589 device->dev = init_dev(jcr, device);
592 Dmsg1(100, "Device %s could not be opened. Skipped\n", devname.c_str());
593 Jmsg(jcr, M_WARNING, 0, _("\n"
594 " Device \"%s\" in changer \"%s\" requested by DIR could not be opened or does not exist.\n"),
595 device->hdr.name, devname.c_str());
598 if (!device->dev->autoselect) {
599 Dmsg1(100, "Device %s not autoselect skipped.\n", devname.c_str());
600 continue; /* device is not available */
602 if (drive < 0 || drive == (int)device->dev->drive_index) {
603 Dmsg1(20, "Found changer device %s\n", device->hdr.name);
607 Dmsg3(100, "Device %s drive wrong: want=%d got=%d skipping\n",
608 devname.c_str(), drive, (int)device->dev->drive_index);
610 break; /* we found it but could not open a device */
616 Dmsg1(100, "Found device %s\n", device->hdr.name);
617 dcr = new_dcr(jcr, NULL, device->dev);
618 dcr->device = device;
625 * Mount command from Director
627 static bool mount_cmd(JCR *jcr)
630 BSOCK *dir = jcr->dir_bsock;
637 ok = sscanf(dir->msg, "mount %127s drive=%d slot=%d", devname.c_str(),
640 ok = sscanf(dir->msg, "mount %127s drive=%d", devname.c_str(), &drive) == 2;
643 dcr = find_device(jcr, devname, drive);
646 dev->dlock(); /* Use P to avoid indefinite block */
647 Dmsg1(100, "mount cmd blocked=%d\n", dev->blocked());
648 switch (dev->blocked()) { /* device blocked? */
649 case BST_WAITING_FOR_SYSOP:
650 /* Someone is waiting, wake him */
651 Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
652 dev->set_blocked(BST_MOUNT);
653 bnet_fsend(dir, "3001 OK mount. Device=%s\n",
655 pthread_cond_broadcast(&dev->wait_next_vol);
656 Dmsg1(100, "JobId=%u broadcast wait_device_release\n", (uint32_t)dcr->jcr->JobId);
657 pthread_cond_broadcast(&wait_device_release);
660 /* In both of these two cases, we (the user) unmounted the Volume */
661 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
663 if (dev->is_autochanger() && slot > 0) {
664 try_autoload_device(jcr, dcr, slot, "");
666 /* We freed the device, so reopen it and wake any waiting threads */
667 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
668 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
670 if (dev->blocked() == BST_UNMOUNTED) {
671 /* We blocked the device, so unblock it */
672 Dmsg0(100, "Unmounted. Unblocking device\n");
677 read_dev_volume_label(dcr);
678 if (dev->blocked() == BST_UNMOUNTED) {
679 /* We blocked the device, so unblock it */
680 Dmsg0(100, "Unmounted. Unblocking device\n");
681 read_label(dcr); /* this should not be necessary */
684 Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
685 dev->set_blocked(BST_MOUNT);
687 if (dev->is_labeled()) {
688 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
689 dev->print_name(), dev->VolHdr.VolumeName);
691 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
692 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
695 pthread_cond_broadcast(&dev->wait_next_vol);
696 Dmsg1(100, "JobId=%u broadcast wait_device_release\n", (uint32_t)dcr->jcr->JobId);
697 pthread_cond_broadcast(&wait_device_release);
700 case BST_DOING_ACQUIRE:
701 bnet_fsend(dir, _("3001 Device %s is doing acquire.\n"),
705 case BST_WRITING_LABEL:
706 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
710 case BST_NOT_BLOCKED:
711 if (dev->is_autochanger() && slot > 0) {
712 try_autoload_device(jcr, dcr, slot, "");
714 if (dev->is_open()) {
715 if (dev->is_labeled()) {
716 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
717 dev->print_name(), dev->VolHdr.VolumeName);
719 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
720 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
723 } else if (dev->is_tape()) {
724 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
725 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
730 if (dev->is_labeled()) {
731 bnet_fsend(dir, _("3001 Device %s is already mounted with Volume \"%s\"\n"),
732 dev->print_name(), dev->VolHdr.VolumeName);
734 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
735 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
738 } else if (dev->is_unmountable()) {
740 bnet_fsend(dir, _("3002 Device %s is mounted.\n"),
743 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
745 } else { /* must be file */
746 bnet_fsend(dir, _("3906 File device %s is always mounted.\n"),
752 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);
788 if (dev->is_unmountable()) {
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_unmountable() && !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_unmountable() && !dev->unmount(0)) {
839 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
841 bnet_fsend(dir, _("3002 Device %s unmounted.\n"),
848 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
851 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
852 pm_strcpy(jcr->errmsg, dir->msg);
853 bnet_fsend(dir, _("3907 Error scanning unmount command: %s\n"), jcr->errmsg);
855 bnet_sig(dir, BNET_EOD);
860 * Release command from Director. This rewinds the device and if
861 * configured does a offline and ensures that Bacula will
862 * re-read the label of the tape before continuing. This gives
863 * the operator the chance to change the tape anytime before the
866 static bool release_cmd(JCR *jcr)
869 BSOCK *dir = jcr->dir_bsock;
874 if (sscanf(dir->msg, "release %127s drive=%d", devname.c_str(), &drive) == 2) {
875 dcr = find_device(jcr, devname, drive);
878 dev->dlock(); /* Use P to avoid indefinite block */
879 if (!dev->is_open()) {
880 if (!dev->is_busy()) {
881 unload_autochanger(dcr, -1);
883 Dmsg0(90, "Device already released\n");
884 bnet_fsend(dir, _("3921 Device %s already released.\n"),
887 } else if (dev->blocked() == BST_WAITING_FOR_SYSOP) {
888 Dmsg2(90, "%d waiter dev_block=%d.\n", dev->num_waiting,
890 unload_autochanger(dcr, -1);
891 bnet_fsend(dir, _("3922 Device %s waiting for sysop.\n"),
894 } else if (dev->blocked() == BST_UNMOUNTED_WAITING_FOR_SYSOP) {
895 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
897 bnet_fsend(dir, _("3922 Device %s waiting for mount.\n"),
900 } else if (dev->blocked() == BST_DOING_ACQUIRE) {
901 bnet_fsend(dir, _("3923 Device %s is busy in acquire.\n"),
904 } else if (dev->blocked() == BST_WRITING_LABEL) {
905 bnet_fsend(dir, _("3914 Device %s is being labeled.\n"),
908 } else if (dev->is_busy()) {
909 send_dir_busy_message(dir, dev);
910 } else { /* device not being used */
911 Dmsg0(90, "Device not in use, releaseing\n");
912 unload_autochanger(dcr, -1);
914 bnet_fsend(dir, _("3022 Device %s released.\n"),
920 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
923 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
924 pm_strcpy(jcr->errmsg, dir->msg);
925 bnet_fsend(dir, _("3927 Error scanning release command: %s\n"), jcr->errmsg);
927 bnet_sig(dir, BNET_EOD);
932 static bool bootstrap_cmd(JCR *jcr)
934 return get_bootstrap_file(jcr, jcr->dir_bsock);
938 * Autochanger command from Director
940 static bool changer_cmd(JCR *jcr)
943 BSOCK *dir = jcr->dir_bsock;
946 const char *cmd = NULL;
949 * A safe_cmd may call autochanger script but does not load/unload
950 * slots so it can be done at the same time that the drive is open.
952 bool safe_cmd = false;
954 if (sscanf(dir->msg, "autochanger list %127s", devname.c_str()) == 1) {
956 safe_cmd = ok = true;
957 } else if (sscanf(dir->msg, "autochanger slots %127s", devname.c_str()) == 1) {
959 safe_cmd = ok = true;
960 } else if (sscanf(dir->msg, "autochanger drives %127s", devname.c_str()) == 1) {
962 safe_cmd = ok = true;
965 dcr = find_device(jcr, devname, -1);
968 dev->dlock(); /* Use P to avoid indefinite block */
969 if (!dev->device->changer_res) {
970 bnet_fsend(dir, _("3995 Device %s is not an autochanger.\n"),
972 /* Under certain "safe" conditions, we can steal the lock */
973 } else if (safe_cmd || !dev->is_open() || dev->can_steal_lock()) {
974 autochanger_cmd(dcr, dir, cmd);
975 } else if (dev->is_busy() || dev->is_blocked()) {
976 send_dir_busy_message(dir, dev);
977 } else { /* device not being used */
978 autochanger_cmd(dcr, dir, cmd);
983 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
985 } else { /* error on scanf */
986 pm_strcpy(jcr->errmsg, dir->msg);
987 bnet_fsend(dir, _("3908 Error scanning autocharger drives/list/slots command: %s\n"),
990 dir->signal(BNET_EOD);
995 * Read and return the Volume label
997 static bool readlabel_cmd(JCR *jcr)
1000 BSOCK *dir = jcr->dir_bsock;
1006 if (sscanf(dir->msg, "readlabel %127s Slot=%d drive=%d", devname.c_str(),
1007 &Slot, &drive) == 3) {
1008 dcr = find_device(jcr, devname, drive);
1011 dev->dlock(); /* Use P to avoid indefinite block */
1012 if (!dev->is_open()) {
1013 read_volume_label(jcr, dcr, dev, Slot);
1015 /* Under certain "safe" conditions, we can steal the lock */
1016 } else if (dev->can_steal_lock()) {
1017 read_volume_label(jcr, dcr, dev, Slot);
1018 } else if (dev->is_busy() || dev->is_blocked()) {
1019 send_dir_busy_message(dir, dev);
1020 } else { /* device not being used */
1021 read_volume_label(jcr, dcr, 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, DCR *dcr, DEVICE *dev, int Slot)
1044 BSOCK *dir = jcr->dir_bsock;
1048 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
1050 if (!try_autoload_device(jcr, dcr, Slot, "")) {
1051 goto bail_out; /* error */
1054 dev->clear_labeled(); /* force read of label */
1055 switch (read_dev_volume_label(dcr)) {
1057 /* DO NOT add quotes around the Volume name. It is scanned in the DIR */
1058 bnet_fsend(dir, _("3001 Volume=%s Slot=%d\n"), dev->VolHdr.VolumeName, Slot);
1059 Dmsg1(100, "Volume: %s\n", dev->VolHdr.VolumeName);
1062 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
1063 dev->print_name(), jcr->errmsg);
1068 give_back_device_lock(dev, &hold);
1072 static bool try_autoload_device(JCR *jcr, DCR *dcr, int slot, const char *VolName)
1074 BSOCK *dir = jcr->dir_bsock;
1076 bstrncpy(dcr->VolumeName, VolName, sizeof(dcr->VolumeName));
1077 dcr->VolCatInfo.Slot = slot;
1078 dcr->VolCatInfo.InChanger = slot > 0;
1079 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
1085 static void send_dir_busy_message(BSOCK *dir, DEVICE *dev)
1087 if (dev->is_blocked()) {
1088 switch (dev->blocked()) {
1090 bnet_fsend(dir, _("3931 Device %s is BLOCKED. user unmounted.\n"),
1093 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
1094 bnet_fsend(dir, _("3932 Device %s is BLOCKED. user unmounted during wait for media/mount.\n"),
1097 case BST_WAITING_FOR_SYSOP:
1098 bnet_fsend(dir, _("3933 Device %s is BLOCKED waiting for media.\n"),
1101 case BST_DOING_ACQUIRE:
1102 bnet_fsend(dir, _("3934 Device %s is being initialized.\n"),
1105 case BST_WRITING_LABEL:
1106 bnet_fsend(dir, _("3935 Device %s is blocked labeling a Volume.\n"),
1110 bnet_fsend(dir, _("3935 Device %s is blocked for unknown reason.\n"),
1114 } else if (dev->can_read()) {
1115 bnet_fsend(dir, _("3936 Device %s is busy reading.\n"),
1116 dev->print_name());;
1118 bnet_fsend(dir, _("3937 Device %s is busy with %d writer(s).\n"),
1119 dev->print_name(), dev->num_writers);