3 * Routines for handling the autochanger.
5 * Kern Sibbald, August MMII
10 Copyright (C) 2002-2005 Kern Sibbald
12 This program is free software; you can redistribute it and/or
13 modify it under the terms of the GNU General Public License
14 version 2 as amended with additional clauses defined in the
15 file LICENSE in the main source directory.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 the file LICENSE for additional details.
24 #include "bacula.h" /* pull in global headers */
25 #include "stored.h" /* pull in Storage Deamon headers */
27 /* Forward referenced functions */
28 static void lock_changer(DCR *dcr);
29 static void unlock_changer(DCR *dcr);
30 static bool unload_other_drive(DCR *dcr, int slot);
33 * Called here to do an autoload using the autochanger, if
34 * configured, and if a Slot has been defined for this Volume.
35 * On success this routine loads the indicated tape, but the
36 * label is not read, so it must be verified.
38 * Note if dir is not NULL, it is the console requesting the
39 * autoload for labeling, so we respond directly to the
42 * Returns: 1 on success
43 * 0 on failure (no changer available)
44 * -1 on error on autochanger
46 int autoload_device(DCR *dcr, int writing, BSOCK *dir)
49 DEVICE *dev = dcr->dev;
51 int drive = dev->drive_index;
52 int rtn_stat = -1; /* error status */
55 slot = dcr->VolCatInfo.InChanger ? dcr->VolCatInfo.Slot : 0;
57 * Handle autoloaders here. If we cannot autoload it, we
58 * will return 0 so that the sysop will be asked to load it.
60 if (writing && dev->is_autochanger() && slot <= 0) {
62 return 0; /* For user, bail out right now */
64 if (dir_find_next_appendable_volume(dcr)) {
65 slot = dcr->VolCatInfo.InChanger ? dcr->VolCatInfo.Slot : 0;
70 Dmsg1(400, "Want changer slot=%d\n", slot);
72 changer = get_pool_memory(PM_FNAME);
73 if (slot > 0 && dcr->device->changer_name && dcr->device->changer_command) {
74 uint32_t timeout = dcr->device->max_changer_wait;
77 loaded = get_autochanger_loaded_slot(dcr);
80 /* Unload anything in our drive */
81 if (!unload_autochanger(dcr, loaded)) {
85 /* Make sure desired slot is unloaded */
86 if (!unload_other_drive(dcr, slot)) {
91 * Load the desired cassette
93 Dmsg1(400, "Doing changer load slot %d\n", slot);
95 _("3304 Issuing autochanger \"load slot %d, drive %d\" command.\n"),
97 dcr->VolCatInfo.Slot = slot; /* slot to be loaded */
98 changer = edit_device_codes(dcr, changer,
99 dcr->device->changer_command, "load");
100 status = run_program(changer, timeout, NULL);
102 Jmsg(jcr, M_INFO, 0, _("3305 Autochanger \"load slot %d, drive %d\", status is OK.\n"),
104 dev->Slot = slot; /* set currently loaded slot */
107 be.set_errno(status);
108 Jmsg(jcr, M_FATAL, 0, _("3992 Bad autochanger \"load slot %d, drive %d\": ERR=%s.\n"),
109 slot, drive, be.strerror());
113 Dmsg2(400, "load slot %d status=%d\n", slot, status);
115 status = 0; /* we got what we want */
116 dev->Slot = slot; /* set currently loaded slot */
118 Dmsg1(400, "After changer, status=%d\n", status);
119 if (status == 0) { /* did we succeed? */
120 rtn_stat = 1; /* tape loaded by changer */
123 rtn_stat = 0; /* no changer found */
125 free_pool_memory(changer);
129 free_pool_memory(changer);
136 * Returns: -1 if error from changer command
139 int get_autochanger_loaded_slot(DCR *dcr)
142 POOLMEM *changer, *results;
144 uint32_t timeout = dcr->device->max_changer_wait;
145 int drive = dcr->dev->drive_index;
147 results = get_pool_memory(PM_MESSAGE);
148 changer = get_pool_memory(PM_FNAME);
152 /* Find out what is loaded, zero means device is unloaded */
153 Jmsg(jcr, M_INFO, 0, _("3301 Issuing autochanger \"loaded drive %d\" command.\n"),
155 changer = edit_device_codes(dcr, changer, dcr->device->changer_command, "loaded");
157 status = run_program(changer, timeout, results);
158 Dmsg3(50, "run_prog: %s stat=%d result=%s\n", changer, status, results);
160 loaded = atoi(results);
162 Jmsg(jcr, M_INFO, 0, _("3302 Autochanger \"loaded drive %d\", result is Slot %d.\n"),
164 dcr->dev->Slot = loaded;
166 Jmsg(jcr, M_INFO, 0, _("3302 Autochanger \"loaded drive %d\", result: nothing loaded.\n"),
172 be.set_errno(status);
173 Jmsg(jcr, M_INFO, 0, _("3991 Bad autochanger \"loaded drive %d\" command: ERR=%s.\n"),
174 drive, be.strerror());
175 loaded = -1; /* force unload */
178 free_pool_memory(changer);
179 free_pool_memory(results);
183 static void lock_changer(DCR *dcr)
185 AUTOCHANGER *changer_res = dcr->device->changer_res;
187 Dmsg1(100, "Locking changer %s\n", changer_res->hdr.name);
188 P(changer_res->changer_mutex); /* Lock changer script */
192 static void unlock_changer(DCR *dcr)
194 AUTOCHANGER *changer_res = dcr->device->changer_res;
196 Dmsg1(100, "Unlocking changer %s\n", changer_res->hdr.name);
197 V(changer_res->changer_mutex); /* Unlock changer script */
202 * Unload the volume, if any, in this drive
203 * On entry: loaded == 0 -- nothing to do
204 * loaded < 0 -- check if anything to do
205 * loaded > 0 -- load slot == loaded
207 bool unload_autochanger(DCR *dcr, int loaded)
209 DEVICE *dev = dcr->dev;
212 uint32_t timeout = dcr->device->max_changer_wait;
219 if (!dev->is_autochanger() || !dcr->device->changer_name ||
220 !dcr->device->changer_command) {
224 offline_or_rewind_dev(dev);
225 /* We are going to load a new tape, so close the device */
226 force_close_device(dev);
229 loaded = get_autochanger_loaded_slot(dcr);
232 POOLMEM *changer = get_pool_memory(PM_FNAME);
234 _("3307 Issuing autochanger \"unload slot %d, drive %d\" command.\n"),
235 loaded, dev->drive_index);
236 slot = dcr->VolCatInfo.Slot;
237 dcr->VolCatInfo.Slot = loaded;
238 changer = edit_device_codes(dcr, changer,
239 dcr->device->changer_command, "unload");
241 int stat = run_program(changer, timeout, NULL);
243 dcr->VolCatInfo.Slot = slot;
247 Jmsg(jcr, M_INFO, 0, _("3995 Bad autochanger \"unload slot %d, drive %d\": ERR=%s.\n"),
248 slot, dev->drive_index, be.strerror());
251 dev->Slot = 0; /* nothing loaded */
253 free_pool_memory(changer);
259 * Unload the slot if mounted in a different drive
261 static bool unload_other_drive(DCR *dcr, int slot)
267 uint32_t timeout = dcr->device->max_changer_wait;
269 AUTOCHANGER *changer = dcr->dev->device->changer_res;
276 if (changer->device->size() == 1) {
280 foreach_alist(device, changer->device) {
281 if (device->dev && device->dev->Slot == slot) {
290 if (dev->is_busy()) {
291 Jmsg(jcr, M_WARNING, 0, _("Volume %s is in use by device %s\n"),
292 dcr->VolumeName, dev->print_name());
293 Dmsg2(200, "Volume %s is in use by device %s\n",
294 dcr->VolumeName, dev->print_name());
299 offline_or_rewind_dev(dev);
300 /* We are going to load a new tape, so close the device */
301 force_close_device(dev);
303 POOLMEM *changer_cmd = get_pool_memory(PM_FNAME);
305 _("3307 Issuing autochanger \"unload slot %d, drive %d\" command.\n"),
306 slot, dev->drive_index);
308 Dmsg2(200, "Issuing autochanger \"unload slot %d, drive %d\" command.\n",
309 slot, dev->drive_index);
311 save_slot = dcr->VolCatInfo.Slot;
314 dcr->VolCatInfo.Slot = slot;
315 changer_cmd = edit_device_codes(dcr, changer_cmd,
316 dcr->device->changer_command, "unload");
318 Dmsg1(200, "Run program=%s\n", changer_cmd);
319 int stat = run_program(changer_cmd, timeout, NULL);
321 dcr->VolCatInfo.Slot = save_slot;
326 Jmsg(jcr, M_INFO, 0, _("3995 Bad autochanger \"unload slot %d, drive %d\": ERR=%s.\n"),
327 slot, dev->drive_index, be.strerror());
329 Dmsg3(200, "Bad autochanger \"unload slot %d, drive %d\": ERR=%s.\n",
330 slot, dev->drive_index, be.strerror());
333 dev->Slot = 0; /* nothing loaded */
334 Dmsg0(200, "Slot unloaded\n");
336 free_pool_memory(changer_cmd);
343 * List the Volumes that are in the autoloader possibly
344 * with their barcodes.
345 * We assume that it is always the Console that is calling us.
347 bool autochanger_cmd(DCR *dcr, BSOCK *dir, const char *cmd)
349 DEVICE *dev = dcr->dev;
350 uint32_t timeout = dcr->device->max_changer_wait;
353 int len = sizeof_pool_memory(dir->msg) - 1;
357 if (!dev->is_autochanger() || !dcr->device->changer_name ||
358 !dcr->device->changer_command) {
359 bnet_fsend(dir, _("3993 Device %s not an autochanger device.\n"),
364 changer = get_pool_memory(PM_FNAME);
366 if (strcmp(cmd, "list") == 0) {
367 unload_autochanger(dcr, -1);
370 /* Now issue the command */
371 changer = edit_device_codes(dcr, changer,
372 dcr->device->changer_command, cmd);
373 bnet_fsend(dir, _("3306 Issuing autochanger \"%s\" command.\n"), cmd);
375 bpipe = open_bpipe(changer, timeout, "r");
378 bnet_fsend(dir, _("3996 Open bpipe failed.\n"));
381 if (strcmp(cmd, "list") == 0) {
382 /* Get output from changer */
383 while (fgets(dir->msg, len, bpipe->rfd)) {
384 dir->msglen = strlen(dir->msg);
385 Dmsg1(100, "<stored: %s\n", dir->msg);
389 /* For slots command, read a single line */
390 bstrncpy(dir->msg, "slots=", len);
391 fgets(dir->msg+6, len-6, bpipe->rfd);
392 dir->msglen = strlen(dir->msg);
393 Dmsg1(100, "<stored: %s", dir->msg);
397 stat = close_bpipe(bpipe);
402 bnet_fsend(dir, _("Autochanger error: ERR=%s\n"), be.strerror());
404 bnet_sig(dir, BNET_EOD);
408 free_pool_memory(changer);
414 * Edit codes into ChangerCommand
416 * %a = archive device name
417 * %c = changer device name
418 * %d = changer drive index
427 * omsg = edited output message
428 * imsg = input string containing edit codes (%x)
429 * cmd = command string (load, unload, ...)
432 char *edit_device_codes(DCR *dcr, char *omsg, const char *imsg, const char *cmd)
439 Dmsg1(1800, "edit_device_codes: %s\n", imsg);
440 for (p=imsg; *p; p++) {
447 str = dcr->dev->archive_name();
450 str = NPRT(dcr->device->changer_name);
453 sprintf(add, "%d", dcr->dev->drive_index);
460 sprintf(add, "%d", dcr->VolCatInfo.Slot - 1);
464 sprintf(add, "%d", dcr->VolCatInfo.Slot);
467 case 'j': /* Job name */
471 str = NPRT(dcr->VolumeName);
474 str = NPRT(dcr->jcr->client_name);
489 Dmsg1(1900, "add_str %s\n", str);
490 pm_strcat(&omsg, (char *)str);
491 Dmsg1(1800, "omsg=%s\n", omsg);
493 Dmsg1(800, "omsg=%s\n", omsg);