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);
32 * Called here to do an autoload using the autochanger, if
33 * configured, and if a Slot has been defined for this Volume.
34 * On success this routine loads the indicated tape, but the
35 * label is not read, so it must be verified.
37 * Note if dir is not NULL, it is the console requesting the
38 * autoload for labeling, so we respond directly to the
41 * Returns: 1 on success
42 * 0 on failure (no changer available)
43 * -1 on error on autochanger
45 int autoload_device(DCR *dcr, int writing, BSOCK *dir)
48 DEVICE *dev = dcr->dev;
50 int drive = dev->drive_index;
51 int rtn_stat = -1; /* error status */
54 slot = dcr->VolCatInfo.InChanger ? dcr->VolCatInfo.Slot : 0;
56 * Handle autoloaders here. If we cannot autoload it, we
57 * will return 0 so that the sysop will be asked to load it.
59 if (writing && dev->is_autochanger() && slot <= 0) {
61 return 0; /* For user, bail out right now */
63 if (dir_find_next_appendable_volume(dcr)) {
64 slot = dcr->VolCatInfo.InChanger ? dcr->VolCatInfo.Slot : 0;
69 Dmsg1(400, "Want changer slot=%d\n", slot);
71 changer = get_pool_memory(PM_FNAME);
72 if (slot > 0 && dcr->device->changer_name && dcr->device->changer_command) {
73 uint32_t timeout = dcr->device->max_changer_wait;
76 loaded = get_autochanger_loaded_slot(dcr);
78 /* If tape we want is not loaded, load it. */
80 if (!unload_autochanger(dcr, loaded)) {
84 * Load the desired cassette
86 Dmsg1(400, "Doing changer load slot %d\n", slot);
88 _("3304 Issuing autochanger \"load slot %d, drive %d\" command.\n"),
90 dcr->VolCatInfo.Slot = slot; /* slot to be loaded */
91 changer = edit_device_codes(dcr, changer,
92 dcr->device->changer_command, "load");
93 status = run_program(changer, timeout, NULL);
95 Jmsg(jcr, M_INFO, 0, _("3305 Autochanger \"load slot %d, drive %d\", status is OK.\n"),
97 dev->Slot = slot; /* set currently loaded slot */
100 be.set_errno(status);
101 Jmsg(jcr, M_FATAL, 0, _("3992 Bad autochanger \"load slot %d, drive %d\": ERR=%s.\n"),
102 slot, drive, be.strerror());
106 Dmsg2(400, "load slot %d status=%d\n", slot, status);
108 status = 0; /* we got what we want */
109 dev->Slot = slot; /* set currently loaded slot */
111 Dmsg1(400, "After changer, status=%d\n", status);
112 if (status == 0) { /* did we succeed? */
113 rtn_stat = 1; /* tape loaded by changer */
116 rtn_stat = 0; /* no changer found */
118 free_pool_memory(changer);
122 free_pool_memory(changer);
129 * Returns: -1 if error from changer command
132 int get_autochanger_loaded_slot(DCR *dcr)
135 POOLMEM *changer, *results;
137 uint32_t timeout = dcr->device->max_changer_wait;
138 int drive = dcr->dev->drive_index;
140 results = get_pool_memory(PM_MESSAGE);
141 changer = get_pool_memory(PM_FNAME);
145 /* Find out what is loaded, zero means device is unloaded */
146 Jmsg(jcr, M_INFO, 0, _("3301 Issuing autochanger \"loaded drive %d\" command.\n"),
148 changer = edit_device_codes(dcr, changer, dcr->device->changer_command, "loaded");
150 status = run_program(changer, timeout, results);
151 Dmsg3(50, "run_prog: %s stat=%d result=%s\n", changer, status, results);
153 loaded = atoi(results);
155 Jmsg(jcr, M_INFO, 0, _("3302 Autochanger \"loaded drive %d\", result is Slot %d.\n"),
157 dcr->dev->Slot = loaded;
159 Jmsg(jcr, M_INFO, 0, _("3302 Autochanger \"loaded drive %d\", result: nothing loaded.\n"),
165 be.set_errno(status);
166 Jmsg(jcr, M_INFO, 0, _("3991 Bad autochanger \"loaded drive %d\" command: ERR=%s.\n"),
167 drive, be.strerror());
168 loaded = -1; /* force unload */
171 free_pool_memory(changer);
172 free_pool_memory(results);
176 static void lock_changer(DCR *dcr)
178 AUTOCHANGER *changer_res = dcr->device->changer_res;
180 Dmsg1(100, "Locking changer %s\n", changer_res->hdr.name);
181 P(changer_res->changer_mutex); /* Lock changer script */
185 static void unlock_changer(DCR *dcr)
187 AUTOCHANGER *changer_res = dcr->device->changer_res;
189 Dmsg1(100, "Unlocking changer %s\n", changer_res->hdr.name);
190 V(changer_res->changer_mutex); /* Unlock changer script */
195 * Unload the volume, if any, in this drive
197 bool unload_autochanger(DCR *dcr, int loaded)
199 DEVICE *dev = dcr->dev;
202 uint32_t timeout = dcr->device->max_changer_wait;
204 if (!dev->is_autochanger() || !dcr->device->changer_name ||
205 !dcr->device->changer_command) {
209 offline_or_rewind_dev(dev);
210 /* We are going to load a new tape, so close the device */
211 force_close_device(dev);
214 loaded = get_autochanger_loaded_slot(dcr);
217 POOLMEM *changer = get_pool_memory(PM_FNAME);
219 _("3307 Issuing autochanger \"unload slot %d, drive %d\" command.\n"),
220 loaded, dev->drive_index);
221 slot = dcr->VolCatInfo.Slot;
222 dcr->VolCatInfo.Slot = loaded;
223 changer = edit_device_codes(dcr, changer,
224 dcr->device->changer_command, "unload");
226 int stat = run_program(changer, timeout, NULL);
228 dcr->VolCatInfo.Slot = slot;
232 Jmsg(jcr, M_INFO, 0, _("3995 Bad autochanger \"unload slot %d, drive %d\": ERR=%s.\n"),
233 slot, dev->drive_index, be.strerror());
234 free_pool_memory(changer);
237 dev->Slot = 0; /* nothing loaded */
239 free_pool_memory(changer);
246 * List the Volumes that are in the autoloader possibly
247 * with their barcodes.
248 * We assume that it is always the Console that is calling us.
250 bool autochanger_cmd(DCR *dcr, BSOCK *dir, const char *cmd)
252 DEVICE *dev = dcr->dev;
253 uint32_t timeout = dcr->device->max_changer_wait;
256 int len = sizeof_pool_memory(dir->msg) - 1;
260 if (!dev->is_autochanger() || !dcr->device->changer_name ||
261 !dcr->device->changer_command) {
262 bnet_fsend(dir, _("3993 Device %s not an autochanger device.\n"),
267 changer = get_pool_memory(PM_FNAME);
269 if (strcmp(cmd, "list") == 0) {
270 unload_autochanger(dcr, 0);
273 /* Now issue the command */
274 changer = edit_device_codes(dcr, changer,
275 dcr->device->changer_command, cmd);
276 bnet_fsend(dir, _("3306 Issuing autochanger \"%s\" command.\n"), cmd);
278 bpipe = open_bpipe(changer, timeout, "r");
281 bnet_fsend(dir, _("3996 Open bpipe failed.\n"));
284 if (strcmp(cmd, "list") == 0) {
285 /* Get output from changer */
286 while (fgets(dir->msg, len, bpipe->rfd)) {
287 dir->msglen = strlen(dir->msg);
288 Dmsg1(100, "<stored: %s\n", dir->msg);
292 /* For slots command, read a single line */
293 bstrncpy(dir->msg, "slots=", len);
294 fgets(dir->msg+6, len-6, bpipe->rfd);
295 dir->msglen = strlen(dir->msg);
296 Dmsg1(100, "<stored: %s", dir->msg);
300 stat = close_bpipe(bpipe);
305 bnet_fsend(dir, _("Autochanger error: ERR=%s\n"), be.strerror());
307 bnet_sig(dir, BNET_EOD);
311 free_pool_memory(changer);
317 * Edit codes into ChangerCommand
319 * %a = archive device name
320 * %c = changer device name
321 * %d = changer drive index
330 * omsg = edited output message
331 * imsg = input string containing edit codes (%x)
332 * cmd = command string (load, unload, ...)
335 char *edit_device_codes(DCR *dcr, char *omsg, const char *imsg, const char *cmd)
342 Dmsg1(1800, "edit_device_codes: %s\n", imsg);
343 for (p=imsg; *p; p++) {
350 str = dcr->dev->archive_name();
353 str = NPRT(dcr->device->changer_name);
356 sprintf(add, "%d", dcr->dev->drive_index);
363 sprintf(add, "%d", dcr->VolCatInfo.Slot - 1);
367 sprintf(add, "%d", dcr->VolCatInfo.Slot);
370 case 'j': /* Job name */
374 str = NPRT(dcr->VolumeName);
377 str = NPRT(dcr->jcr->client_name);
392 Dmsg1(1900, "add_str %s\n", str);
393 pm_strcat(&omsg, (char *)str);
394 Dmsg1(1800, "omsg=%s\n", omsg);
396 Dmsg1(800, "omsg=%s\n", omsg);