git.sur5r.net Git - bacula/bacula/blob - bacula/src/stored/dircmd.c

   1 /*
   2  *  This file handles accepting Director Commands
   3  *
   4  *    Most Director commands are handled here, with the
   5  *    exception of the Job command command and subsequent
   6  *    subcommands that are handled
   7  *    in job.c.
   8  *
   9  *    N.B. in this file, in general we must use P(dev->mutex) rather
  10  *      than lock_device(dev) so that we can examine the blocked
  11  *      state rather than blocking ourselves. In some "safe" cases,
  12  *      we can do things to a blocked device. CAREFUL!!!!
  13  *
  14  *    File daemon commands are handled in fdcmd.c
  15  *
  16  *     Kern Sibbald, May MMI
  17  *
  18  *   Version $Id$
  19  *
  20  */
  21 /*
  22    Copyright (C) 2000-2003 Kern Sibbald and John Walker
  23
  24    This program is free software; you can redistribute it and/or
  25    modify it under the terms of the GNU General Public License as
  26    published by the Free Software Foundation; either version 2 of
  27    the License, or (at your option) any later version.
  28
  29    This program is distributed in the hope that it will be useful,
  30    but WITHOUT ANY WARRANTY; without even the implied warranty of
  31    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  32    General Public License for more details.
  33
  34    You should have received a copy of the GNU General Public
  35    License along with this program; if not, write to the Free
  36    Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  37    MA 02111-1307, USA.
  38
  39  */
  40
  41 #include "bacula.h"
  42 #include "stored.h"
  43
  44 /* Exported variables */
  45
  46 /* Imported variables */
  47 extern BSOCK *filed_chan;
  48 extern int r_first, r_last;
  49 extern struct s_res resources[];
  50 extern char my_name[];
  51 extern time_t daemon_start_time;
  52 extern struct s_last_job last_job;
  53
  54 /* Static variables */
  55 static char derrmsg[]       = "3900 Invalid command\n";
  56 static char OKsetdebug[]   = "3000 OK setdebug=%d\n";
  57
  58
  59 /* Imported functions */
  60 extern void terminate_child();
  61 extern int job_cmd(JCR *jcr);
  62
  63 /* Forward referenced functions */
  64 static int label_cmd(JCR *jcr);
  65 static int relabel_cmd(JCR *jcr);
  66 static int setdebug_cmd(JCR *jcr);
  67 static int cancel_cmd(JCR *cjcr);
  68 static int mount_cmd(JCR *jcr);
  69 static int unmount_cmd(JCR *jcr);
  70 static int status_cmd(JCR *sjcr);
  71 static int autochanger_cmd(JCR *sjcr);
  72 static int do_label(JCR *jcr, int relabel);
  73 static void label_volume_if_ok(JCR *jcr, DEVICE *dev, char *oldname,
  74                                char *newname, char *poolname,
  75                                int Slot, int relabel);
  76 static void send_blocked_status(JCR *jcr, DEVICE *dev);
  77
  78 struct s_cmds {
  79    char *cmd;
  80    int (*func)(JCR *jcr);
  81 };
  82
  83 /*
  84  * The following are the recognized commands from the Director.
  85  */
  86 static struct s_cmds cmds[] = {
  87    {"JobId=",    job_cmd},            /* start Job */
  88    {"setdebug=", setdebug_cmd},       /* set debug level */
  89    {"cancel",    cancel_cmd},
  90    {"label",     label_cmd},          /* label a tape */
  91    {"relabel",   relabel_cmd},        /* relabel a tape */
  92    {"mount",     mount_cmd},
  93    {"unmount",   unmount_cmd},
  94    {"status",    status_cmd},
  95    {"autochanger", autochanger_cmd},
  96    {NULL,        NULL}                /* list terminator */
  97 };
  98
  99
 100 /*
 101  * Connection request. We accept connections either from the
 102  *  Director or a Client.
 103  *
 104  * Note, we are running as a seperate thread of the Storage daemon.
 105  *  and it is because a Director has made a connection with
 106  *  us on the "Message" channel.
 107  *
 108  * Basic tasks done here:
 109  *  - Create a JCR record
 110  *  - Authenticate the Director
 111  *  - We wait for a command
 112  *  - We execute the command
 113  *  - We continue or exit depending on the return status
 114  */
 115 void *connection_request(void *arg)
 116 {
 117    BSOCK *bs = (BSOCK *)arg;
 118    JCR *jcr;
 119    int i, found, quit;
 120    int bnet_stat = 0;
 121    char name[MAX_NAME_LENGTH];
 122
 123    if (bnet_recv(bs) <= 0) {
 124       Emsg0(M_ERROR, 0, _("Connection request failed.\n"));
 125       return NULL;
 126    }
 127
 128    /*
 129     * See if this is a File daemon connection
 130     */
 131    if (bs->msglen < 25 || bs->msglen > (int)sizeof(name)+25) {
 132       Emsg1(M_ERROR, 0, _("Invalid Dir connection. Len=%d\n"), bs->msglen);
 133    }
 134    if (sscanf(bs->msg, "Hello Start Job %127s calling\n", name) == 1) {
 135       handle_filed_connection(bs, name);
 136       return NULL;
 137    }
 138
 139    jcr = new_jcr(sizeof(JCR), stored_free_jcr);     /* create Job Control Record */
 140    jcr->dir_bsock = bs;               /* save Director bsock */
 141
 142    Dmsg0(1000, "stored in start_job\n");
 143
 144    /*
 145     * Authenticate the Director
 146     */
 147    if (!authenticate_director(jcr)) {
 148       Jmsg(jcr, M_FATAL, 0, _("Unable to authenticate Director\n"));
 149       free_jcr(jcr);
 150       return NULL;
 151    }
 152    Dmsg0(90, "Message channel init completed.\n");
 153
 154    for (quit=0; !quit;) {
 155       /* Read command */
 156       if ((bnet_stat = bnet_recv(bs)) <= 0) {
 157          break;                       /* connection terminated */
 158       }
 159       Dmsg1(9, "<dird: %s\n", bs->msg);
 160       found = FALSE;
 161       for (i=0; cmds[i].cmd; i++) {
 162          if (strncmp(cmds[i].cmd, bs->msg, strlen(cmds[i].cmd)) == 0) {
 163             if (!cmds[i].func(jcr)) {    /* do command */
 164                quit = TRUE;              /* error, get out */
 165                Dmsg1(90, "Command %s requsts quit\n", cmds[i].cmd);
 166             }
 167             found = TRUE;            /* indicate command found */
 168             break;
 169          }
 170       }
 171       if (!found) {                   /* command not found */
 172          bnet_fsend(bs, derrmsg);
 173          quit = TRUE;
 174          break;
 175       }
 176    }
 177    if (bnet_stat != BNET_TERMINATE) {
 178       bnet_sig(bs, BNET_TERMINATE);
 179    }
 180    free_jcr(jcr);
 181    return NULL;
 182 }
 183
 184 /*
 185  * Set debug level as requested by the Director
 186  *
 187  */
 188 static int setdebug_cmd(JCR *jcr)
 189 {
 190    BSOCK *dir = jcr->dir_bsock;
 191    int level;
 192
 193    Dmsg1(10, "setdebug_cmd: %s", dir->msg);
 194    if (sscanf(dir->msg, "setdebug=%d", &level) != 1 || level < 0) {
 195       bnet_fsend(dir, "3991 Bad setdebug command: %s\n", dir->msg);
 196       return 0;
 197    }
 198    debug_level = level;
 199    return bnet_fsend(dir, OKsetdebug, level);
 200 }
 201
 202
 203 /*
 204  * Cancel a Job
 205  */
 206 static int cancel_cmd(JCR *cjcr)
 207 {
 208    BSOCK *dir = cjcr->dir_bsock;
 209    int oldStatus;
 210    char Job[MAX_NAME_LENGTH];
 211    JCR *jcr;
 212
 213    if (sscanf(dir->msg, "cancel Job=%127s", Job) == 1) {
 214       if (!(jcr=get_jcr_by_full_name(Job))) {
 215          bnet_fsend(dir, _("3992 Job %s not found.\n"), Job);
 216       } else {
 217          P(jcr->mutex);
 218          oldStatus = jcr->JobStatus;
 219          set_jcr_job_status(jcr, JS_Canceled);
 220          if (!jcr->authenticated && oldStatus == JS_WaitFD) {
 221             pthread_cond_signal(&jcr->job_start_wait); /* wake waiting thread */
 222          }
 223          V(jcr->mutex);
 224          if (jcr->file_bsock) {
 225             bnet_sig(jcr->file_bsock, BNET_TERMINATE);
 226          }
 227          /* If thread waiting on mount, wake him */
 228          if (jcr->device && jcr->device->dev &&
 229               (jcr->device->dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
 230                jcr->device->dev->dev_blocked == BST_UNMOUNTED ||
 231                jcr->device->dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
 232              pthread_cond_signal(&jcr->device->dev->wait_next_vol);
 233          }
 234          bnet_fsend(dir, _("3000 Job %s marked to be canceled.\n"), jcr->Job);
 235          free_jcr(jcr);
 236       }
 237    } else {
 238       bnet_fsend(dir, _("3993 Error scanning cancel command.\n"));
 239    }
 240    bnet_sig(dir, BNET_EOD);
 241    return 1;
 242 }
 243
 244 /*
 245  * Label a tape
 246  *
 247  */
 248 static int label_cmd(JCR *jcr)
 249 {
 250    return do_label(jcr, 0);
 251 }
 252
 253 static int relabel_cmd(JCR *jcr)
 254 {
 255    return do_label(jcr, 1);
 256 }
 257
 258 static int do_label(JCR *jcr, int relabel)
 259 {
 260    POOLMEM *dname, *newname, *oldname, *poolname, *mtype;
 261    BSOCK *dir = jcr->dir_bsock;
 262    DEVRES *device;
 263    DEVICE *dev;
 264    int found = 0, ok = 0;
 265    int slot;
 266
 267    dname = get_memory(dir->msglen+1);
 268    newname = get_memory(dir->msglen+1);
 269    oldname = get_memory(dir->msglen+1);
 270    poolname = get_memory(dir->msglen+1);
 271    mtype = get_memory(dir->msglen+1);
 272    if (relabel) {
 273       if (sscanf(dir->msg, "relabel %s OldName=%s NewName=%s PoolName=%s MediaType=%s Slot=%d",
 274           dname, oldname, newname, poolname, mtype, &slot) == 6) {
 275          ok = 1;
 276       }
 277    } else {
 278       *oldname = 0;
 279       if (sscanf(dir->msg, "label %s VolumeName=%s PoolName=%s MediaType=%s Slot=%d",
 280           dname, newname, poolname, mtype, &slot) == 5) {
 281          ok = 1;
 282       }
 283    }
 284    if (ok) {
 285       unbash_spaces(dname);
 286       unbash_spaces(newname);
 287       unbash_spaces(oldname);
 288       unbash_spaces(poolname);
 289       unbash_spaces(mtype);
 290       device = NULL;
 291       LockRes();
 292       while ((device=(DEVRES *)GetNextRes(R_DEVICE, (RES *)device))) {
 293          /* Find resource, and make sure we were able to open it */
 294          if (strcmp(device->hdr.name, dname) == 0 && device->dev) {
 295             Dmsg1(20, "Found device %s\n", device->hdr.name);
 296             found = 1;
 297             break;
 298          }
 299       }
 300       UnlockRes();
 301       if (found) {
 302          /******FIXME**** compare MediaTypes */
 303          jcr->device = device;
 304          dev = device->dev;
 305
 306          P(dev->mutex);               /* Use P to avoid indefinite block */
 307          if (!(dev->state & ST_OPENED)) {
 308             if (open_dev(dev, newname, READ_WRITE) < 0) {
 309                bnet_fsend(dir, _("3994 Connot open device: %s\n"), strerror_dev(dev));
 310             } else {
 311                label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
 312                force_close_dev(dev);
 313             }
 314          /* Under certain "safe" conditions, we can steal the lock */
 315          } else if (dev->dev_blocked &&
 316                     (dev->dev_blocked == BST_UNMOUNTED ||
 317                      dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
 318                      dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
 319             label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
 320          } else if (dev->state & ST_READ || dev->num_writers) {
 321             if (dev->state & ST_READ) {
 322                 bnet_fsend(dir, _("3901 Device %s is busy with 1 reader.\n"),
 323                    dev_name(dev));
 324             } else {
 325                 bnet_fsend(dir, _("3902 Device %s is busy with %d writer(s).\n"),
 326                    dev_name(dev), dev->num_writers);
 327             }
 328          } else {                     /* device not being used */
 329             label_volume_if_ok(jcr, dev, oldname, newname, poolname, slot, relabel);
 330          }
 331          V(dev->mutex);
 332       } else {
 333          bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
 334       }
 335    } else {
 336       /* NB dir->msg gets clobbered in bnet_fsend, so save command */
 337       pm_strcpy(&jcr->errmsg, dir->msg);
 338       bnet_fsend(dir, _("3903 Error scanning label command: %s\n"), jcr->errmsg);
 339    }
 340    free_memory(dname);
 341    free_memory(oldname);
 342    free_memory(newname);
 343    free_memory(poolname);
 344    free_memory(mtype);
 345    bnet_sig(dir, BNET_EOD);
 346    return 1;
 347 }
 348
 349 /*
 350  * Read the tape label and determine if we can safely
 351  * label the tape (not a Bacula volume), then label it.
 352  *
 353  *  Enter with the mutex set
 354  */
 355 static void label_volume_if_ok(JCR *jcr, DEVICE *dev, char *oldname,
 356                                char *newname, char *poolname,
 357                                int slot, int relabel)
 358 {
 359    BSOCK *dir = jcr->dir_bsock;
 360    DEV_BLOCK *block;
 361    bsteal_lock_t hold;
 362
 363    steal_device_lock(dev, &hold, BST_WRITING_LABEL);
 364
 365    strcpy(jcr->VolumeName, newname);
 366    jcr->VolCatInfo.Slot = slot;
 367    autoload_device(jcr, dev, 0, dir);      /* autoload if possible */
 368    block = new_block(dev);
 369
 370    /* Ensure that the device is open -- not autoload_device() closes it */
 371    for ( ; !(dev->state & ST_OPENED); ) {
 372        if (open_dev(dev, jcr->VolumeName, READ_WRITE) < 0) {
 373           if (dev->dev_errno == EAGAIN || dev->dev_errno == EBUSY) {
 374              sleep(30);
 375           }
 376           bnet_fsend(dir, _("3910 Unable to open device %s. ERR=%s\n"),
 377              dev_name(dev), strerror_dev(dev));
 378           goto bail_out;
 379        }
 380    }
 381
 382    /* See what we have for a Volume */
 383    switch (read_dev_volume_label(jcr, dev, block)) {
 384       case VOL_NAME_ERROR:
 385       case VOL_VERSION_ERROR:
 386       case VOL_LABEL_ERROR:
 387       case VOL_OK:
 388          if (!relabel) {
 389             bnet_fsend(dir, _(
 390                "3911 Cannot label Volume because it is already labeled: %s\n"),
 391                 dev->VolHdr.VolName);
 392             break;
 393          }
 394          /* Relabel request. If oldname matches, continue */
 395          if (strcmp(oldname, dev->VolHdr.VolName) != 0) {
 396             bnet_fsend(dir, _("Wrong volume mounted.\n"));
 397             break;
 398          }
 399          /* Fall through wanted! */
 400       case VOL_IO_ERROR:
 401       case VOL_NO_LABEL:
 402          if (!write_volume_label_to_dev(jcr, jcr->device, newname, poolname)) {
 403             bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
 404             break;
 405          }
 406          strcpy(jcr->VolumeName, newname);
 407          bnet_fsend(dir, _("3000 OK label. Volume=%s Device=%s\n"),
 408             newname, dev->dev_name);
 409          break;
 410       case VOL_NO_MEDIA:
 411          bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
 412          break;
 413       default:
 414          bnet_fsend(dir, _("3913 Cannot label Volume. \
 415 Unknown status %d from read_volume_label()\n"), jcr->label_status);
 416          break;
 417    }
 418 bail_out:
 419    free_block(block);
 420    return_device_lock(dev, &hold);
 421 }
 422
 423
 424 /*
 425  * Read the tape label
 426  *
 427  *  Enter with the mutex set
 428  */
 429 static int read_label(JCR *jcr, DEVICE *dev)
 430 {
 431    int stat;
 432    BSOCK *dir = jcr->dir_bsock;
 433    DEV_BLOCK *block;
 434 #ifndef NEW_LOCK
 435    bsteal_lock_t hold;
 436
 437    steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
 438 #endif
 439
 440    jcr->VolumeName[0] = 0;
 441    block = new_block(dev);
 442    dev->state &= ~ST_LABEL;           /* force read of label */
 443    switch (read_dev_volume_label(jcr, dev, block)) {
 444       case VOL_OK:
 445          bnet_fsend(dir, _("3001 Mounted Volume: %s\n"), dev->VolHdr.VolName);
 446          stat = 1;
 447          break;
 448       default:
 449          bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device \"%s\" because:\n%s\n"),
 450             dev->dev_name, jcr->errmsg);
 451          stat = 0;
 452          break;
 453    }
 454    free_block(block);
 455 #ifndef NEW_LOCK
 456    return_device_lock(dev, &hold);
 457 #endif
 458    return stat;
 459 }
 460
 461 /*
 462  * Mount command from Director
 463  */
 464 static int mount_cmd(JCR *jcr)
 465 {
 466    POOLMEM *dev_name;
 467    BSOCK *dir = jcr->dir_bsock;
 468    DEVRES *device;
 469    DEVICE *dev;
 470    int found = 0;
 471
 472    dev_name = get_memory(dir->msglen+1);
 473    if (sscanf(dir->msg, "mount %s", dev_name) == 1) {
 474       unbash_spaces(dev_name);
 475       device = NULL;
 476       LockRes();
 477       while ((device=(DEVRES *)GetNextRes(R_DEVICE, (RES *)device))) {
 478          /* Find resource, and make sure we were able to open it */
 479          if (strcmp(device->hdr.name, dev_name) == 0 && device->dev) {
 480             Dmsg1(20, "Found device %s\n", device->hdr.name);
 481             found = 1;
 482             break;
 483          }
 484       }
 485       UnlockRes();
 486       if (found) {
 487          jcr->device = device;
 488          dev = device->dev;
 489          P(dev->mutex);               /* Use P to avoid indefinite block */
 490          switch (dev->dev_blocked) {         /* device blocked? */
 491             DEV_BLOCK *block;
 492             case BST_WAITING_FOR_SYSOP:
 493                /* Someone is waiting, wake him */
 494                Dmsg0(90, "Waiting for mount attempt to wake thread\n");
 495                pthread_cond_signal(&dev->wait_next_vol);
 496                bnet_fsend(dir, "3001 OK mount. Device=%s\n", dev->dev_name);
 497                break;
 498
 499             case BST_UNMOUNTED_WAITING_FOR_SYSOP:
 500             case BST_UNMOUNTED:
 501                /* We freed the device, so reopen it and wake any waiting threads */
 502                if (open_dev(dev, NULL, READ_WRITE) < 0) {
 503                   bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
 504                      strerror_dev(dev));
 505                   break;
 506                }
 507                block = new_block(dev);
 508                read_dev_volume_label(jcr, dev, block);
 509                free_block(block);
 510                if (dev->dev_blocked == BST_UNMOUNTED) {
 511                   Dmsg0(90, "Unmounted unblocking device\n");
 512                   read_label(jcr, dev);
 513                   unblock_device(dev);
 514                } else {
 515                   Dmsg0(90, "Unmounted waiting for mount attempt to wake thread\n");
 516                   dev->dev_blocked = BST_WAITING_FOR_SYSOP;
 517                   pthread_cond_signal(&dev->wait_next_vol);
 518                }
 519                if (dev->state & ST_LABEL) {
 520                   bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
 521                      dev->dev_name, dev->VolHdr.VolName);
 522                } else {
 523                   bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
 524                                     "Try unmounting and remounting the Volume.\n"),
 525                              dev->dev_name);
 526                }
 527                break;
 528
 529             case BST_DOING_ACQUIRE:
 530                bnet_fsend(dir, _("3001 Device %s is mounted; doing acquire.\n"),
 531                           dev->dev_name);
 532                break;
 533
 534             case BST_WRITING_LABEL:
 535                bnet_fsend(dir, _("3903 Device %s is being labeled.\n"), dev->dev_name);
 536                break;
 537
 538             case BST_NOT_BLOCKED:
 539                if (dev->state & ST_OPENED) {
 540                   if (dev->state & ST_LABEL) {
 541                      bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
 542                         dev->dev_name, dev->VolHdr.VolName);
 543                   } else {
 544                      bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
 545                                     "Try unmounting and remounting the Volume.\n"),
 546                                 dev->dev_name);
 547                   }
 548                } else {
 549                   if (!dev_is_tape(dev)) {
 550                      bnet_fsend(dir, _("3906 cannot mount non-tape.\n"));
 551                      break;
 552                   }
 553                   if (open_dev(dev, NULL, READ_WRITE) < 0) {
 554                      bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
 555                         strerror_dev(dev));
 556                      break;
 557                   }
 558                   read_label(jcr, dev);
 559                   if (dev->state & ST_LABEL) {
 560                      bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
 561                         dev->dev_name, dev->VolHdr.VolName);
 562                   } else {
 563                      bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
 564                                        "Try unmounting and remounting the Volume.\n"),
 565                                 dev->dev_name);
 566                   }
 567                }
 568                break;
 569
 570             default:
 571                bnet_fsend(dir, _("3905 Bizarre wait state %d\n"), dev->dev_blocked);
 572                break;
 573          }
 574          V(dev->mutex);
 575       } else {
 576          bnet_fsend(dir, _("3999 Device %s not found\n"), dev_name);
 577       }
 578    } else {
 579       pm_strcpy(&jcr->errmsg, dir->msg);
 580       bnet_fsend(dir, _("3906 Error scanning mount command: %s\n"), jcr->errmsg);
 581    }
 582    free_memory(dev_name);
 583    bnet_sig(dir, BNET_EOD);
 584    return 1;
 585 }
 586
 587 /*
 588  * unmount command from Director
 589  */
 590 static int unmount_cmd(JCR *jcr)
 591 {
 592    POOLMEM *dname;
 593    BSOCK *dir = jcr->dir_bsock;
 594    DEVRES *device;
 595    DEVICE *dev;
 596    int found = 0;
 597
 598    dname = get_memory(dir->msglen+1);
 599    if (sscanf(dir->msg, "unmount %s", dname) == 1) {
 600       unbash_spaces(dname);
 601       device = NULL;
 602       LockRes();
 603       while ((device=(DEVRES *)GetNextRes(R_DEVICE, (RES *)device))) {
 604          /* Find resource, and make sure we were able to open it */
 605          if (strcmp(device->hdr.name, dname) == 0 && device->dev) {
 606             Dmsg1(20, "Found device %s\n", device->hdr.name);
 607             found = 1;
 608             break;
 609          }
 610       }
 611       UnlockRes();
 612       if (found) {
 613          jcr->device = device;
 614          dev = device->dev;
 615          P(dev->mutex);               /* Use P to avoid indefinite block */
 616          if (!(dev->state & ST_OPENED)) {
 617             Dmsg0(90, "Device already unmounted\n");
 618             bnet_fsend(dir, _("3901 Device %s is already unmounted.\n"), dev_name(dev));
 619
 620          } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP) {
 621             Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
 622                dev->dev_blocked);
 623             if (dev_cap(dev, CAP_OFFLINEUNMOUNT)) {
 624                offline_dev(dev);
 625             }
 626             force_close_dev(dev);
 627             dev->dev_blocked = BST_UNMOUNTED_WAITING_FOR_SYSOP;
 628             bnet_fsend(dir, _("3001 Device %s unmounted.\n"), dev_name(dev));
 629
 630          } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
 631             bnet_fsend(dir, _("3902 Device %s is busy in acquire.\n"),
 632                dev_name(dev));
 633
 634          } else if (dev->dev_blocked == BST_WRITING_LABEL) {
 635             bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
 636                dev_name(dev));
 637
 638          } else if (dev->state & ST_READ || dev->num_writers) {
 639             if (dev->state & ST_READ) {
 640                 Dmsg0(90, "Device in read mode\n");
 641                 bnet_fsend(dir, _("3904 Device %s is busy with 1 reader.\n"),
 642                    dev_name(dev));
 643             } else {
 644                 Dmsg1(90, "Device busy with %d writers\n", dev->num_writers);
 645                 bnet_fsend(dir, _("3905 Device %s is busy with %d writer(s).\n"),
 646                    dev_name(dev), dev->num_writers);
 647             }
 648
 649          } else {                     /* device not being used */
 650             Dmsg0(90, "Device not in use, unmounting\n");
 651             block_device(dev, BST_UNMOUNTED);
 652             if (dev_cap(dev, CAP_OFFLINEUNMOUNT)) {
 653                offline_dev(dev);
 654             }
 655             force_close_dev(dev);
 656             bnet_fsend(dir, _("3002 Device %s unmounted.\n"), dev_name(dev));
 657          }
 658          V(dev->mutex);
 659       } else {
 660          bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
 661       }
 662    } else {
 663       /* NB dir->msg gets clobbered in bnet_fsend, so save command */
 664       pm_strcpy(&jcr->errmsg, dir->msg);
 665       bnet_fsend(dir, _("3907 Error scanning unmount command: %s\n"), jcr->errmsg);
 666    }
 667    free_memory(dname);
 668    bnet_sig(dir, BNET_EOD);
 669    return 1;
 670 }
 671
 672 /*
 673  * Status command from Director
 674  */
 675 static int status_cmd(JCR *jcr)
 676 {
 677    DEVRES *device;
 678    DEVICE *dev;
 679    int found, bps, sec, bpb;
 680    BSOCK *user = jcr->dir_bsock;
 681    char dt[MAX_TIME_LENGTH];
 682    char b1[30], b2[30], b3[30];
 683
 684    bnet_fsend(user, "\n%s Version: " VERSION " (" BDATE ")\n", my_name);
 685    bstrftime(dt, sizeof(dt), daemon_start_time);
 686    bnet_fsend(user, _("Daemon started %s, %d Job%s run.\n"), dt, last_job.NumJobs,
 687         last_job.NumJobs == 1 ? "" : "s");
 688    if (last_job.NumJobs > 0) {
 689       char termstat[30];
 690
 691       bstrftime(dt, sizeof(dt), last_job.end_time);
 692       bnet_fsend(user, _("Last Job %s finished at %s\n"), last_job.Job, dt);
 693
 694       jobstatus_to_ascii(last_job.JobStatus, termstat, sizeof(termstat));
 695       bnet_fsend(user, _("  Files=%s Bytes=%s Termination Status=%s\n"),
 696            edit_uint64_with_commas(last_job.JobFiles, b1),
 697            edit_uint64_with_commas(last_job.JobBytes, b2),
 698            termstat);
 699    }
 700
 701    LockRes();
 702    for (device=NULL;  (device=(DEVRES *)GetNextRes(R_DEVICE, (RES *)device)); ) {
 703       for (dev=device->dev; dev; dev=dev->next) {
 704          if (dev->state & ST_OPENED) {
 705             if (dev->state & ST_LABEL) {
 706                bnet_fsend(user, _("Device %s is mounted with Volume \"%s\"\n"),
 707                   dev_name(dev), dev->VolHdr.VolName);
 708             } else {
 709                bnet_fsend(user, _("Device %s open but no Bacula volume is mounted.\n"), dev_name(dev));
 710             }
 711             send_blocked_status(jcr, dev);
 712             bpb = dev->VolCatInfo.VolCatBlocks;
 713             if (bpb <= 0) {
 714                bpb = 1;
 715             }
 716             bpb = dev->VolCatInfo.VolCatBytes / bpb;
 717             bnet_fsend(user, _("    Total Bytes=%s Blocks=%s Bytes/block=%s\n"),
 718                edit_uint64_with_commas(dev->VolCatInfo.VolCatBytes, b1),
 719                edit_uint64_with_commas(dev->VolCatInfo.VolCatBlocks, b2),
 720                edit_uint64_with_commas(bpb, b3));
 721             bnet_fsend(user, _("    Positioned at File=%s Block=%s\n"),
 722                edit_uint64_with_commas(dev->file, b1),
 723                edit_uint64_with_commas(dev->block_num, b2));
 724
 725          } else {
 726             bnet_fsend(user, _("Device %s is not open.\n"), dev_name(dev));
 727             send_blocked_status(jcr, dev);
 728          }
 729       }
 730    }
 731    UnlockRes();
 732
 733    found = 0;
 734    lock_jcr_chain();
 735    /* NOTE, we reuse a calling argument jcr. Be warned! */
 736    for (jcr=NULL; (jcr=get_next_jcr(jcr)); ) {
 737       if (jcr->JobStatus == JS_WaitFD) {
 738          bnet_fsend(user, _("%s Job %s waiting for Client connection.\n"),
 739             job_type_to_str(jcr->JobType), jcr->Job);
 740       }
 741       if (jcr->device) {
 742          bnet_fsend(user, _("%s %s job %s is using device %s volume %s\n"),
 743                    job_level_to_str(jcr->JobLevel),
 744                    job_type_to_str(jcr->JobType),
 745                    jcr->Job, jcr->device->device_name,
 746                    jcr->VolumeName);
 747          sec = time(NULL) - jcr->run_time;
 748          if (sec <= 0) {
 749             sec = 1;
 750          }
 751          bps = jcr->JobBytes / sec;
 752          bnet_fsend(user, _("    Files=%s Bytes=%s Bytes/sec=%s\n"),
 753             edit_uint64_with_commas(jcr->JobFiles, b1),
 754             edit_uint64_with_commas(jcr->JobBytes, b2),
 755             edit_uint64_with_commas(bps, b3));
 756          found = 1;
 757 #ifdef DEBUG
 758          if (jcr->file_bsock) {
 759             bnet_fsend(user, "    FDReadSeqNo=%" lld " fd=%d\n",
 760                jcr->file_bsock->read_seqno, jcr->file_bsock->fd);
 761          } else {
 762             bnet_fsend(user, "    FDSocket closed\n");
 763          }
 764 #endif
 765       }
 766       free_locked_jcr(jcr);
 767    }
 768    unlock_jcr_chain();
 769    if (!found) {
 770       bnet_fsend(user, _("No jobs running.\n"));
 771    }
 772
 773 #ifdef full_status
 774    bnet_fsend(user, "\n\n");
 775    dump_resource(R_DEVICE, resources[R_DEVICE-r_first].res_head, sendit, user);
 776 #endif
 777    bnet_fsend(user, "====\n");
 778
 779    bnet_sig(user, BNET_EOD);
 780    return 1;
 781 }
 782
 783 static void send_blocked_status(JCR *jcr, DEVICE *dev)
 784 {
 785    BSOCK *user = jcr->dir_bsock;
 786
 787    switch (dev->dev_blocked) {
 788       case BST_UNMOUNTED:
 789          bnet_fsend(user, _("    Device is BLOCKED. User unmounted.\n"));
 790          break;
 791       case BST_UNMOUNTED_WAITING_FOR_SYSOP:
 792          bnet_fsend(user, _("    Device is BLOCKED. User unmounted during wait for media/mount.\n"));
 793          break;
 794       case BST_WAITING_FOR_SYSOP:
 795          if (jcr->JobStatus == JS_WaitMount) {
 796             bnet_fsend(user, _("    Device is BLOCKED waiting for mount.\n"));
 797          } else {
 798             bnet_fsend(user, _("    Device is BLOCKED waiting for appendable media.\n"));
 799          }
 800          break;
 801       case BST_DOING_ACQUIRE:
 802          bnet_fsend(user, _("    Device is being initialized.\n"));
 803          break;
 804       case BST_WRITING_LABEL:
 805          bnet_fsend(user, _("    Device is blocked labeling a Volume.\n"));
 806          break;
 807       default:
 808          break;
 809    }
 810 }
 811
 812 /*
 813  * Autochanger command from Director
 814  */
 815 static int autochanger_cmd(JCR *jcr)
 816 {
 817    POOLMEM *devname;
 818    BSOCK *dir = jcr->dir_bsock;
 819    DEVRES *device;
 820    DEVICE *dev;
 821    int found = 0;
 822
 823    devname = get_memory(dir->msglen+1);
 824    if (sscanf(dir->msg, "autochanger list %s ", devname) == 1) {
 825       unbash_spaces(devname);
 826       device = NULL;
 827       LockRes();
 828       while ((device=(DEVRES *)GetNextRes(R_DEVICE, (RES *)device))) {
 829          /* Find resource, and make sure we were able to open it */
 830          if (strcmp(device->hdr.name, devname) == 0 && device->dev) {
 831             Dmsg1(20, "Found device %s\n", device->hdr.name);
 832             found = 1;
 833             break;
 834          }
 835       }
 836       UnlockRes();
 837       if (found) {
 838          jcr->device = device;
 839          dev = device->dev;
 840          P(dev->mutex);               /* Use P to avoid indefinite block */
 841          if (!(dev->state & ST_OPENED)) {
 842             if (open_dev(dev, NULL, READ_WRITE) < 0) {
 843                bnet_fsend(dir, _("3994 Connot open device: %s\n"), strerror_dev(dev));
 844             } else {
 845                autochanger_list(jcr, dev, dir);
 846                force_close_dev(dev);
 847             }
 848          /* Under certain "safe" conditions, we can steal the lock */
 849          } else if (dev->dev_blocked &&
 850                     (dev->dev_blocked == BST_UNMOUNTED ||
 851                      dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
 852                      dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
 853             autochanger_list(jcr, dev, dir);
 854          } else if (dev->state & ST_READ || dev->num_writers) {
 855             if (dev->state & ST_READ) {
 856                 bnet_fsend(dir, _("3901 Device %s is busy with 1 reader.\n"),
 857                    dev_name(dev));
 858             } else {
 859                 bnet_fsend(dir, _("3902 Device %s is busy with %d writer(s).\n"),
 860                    dev_name(dev), dev->num_writers);
 861             }
 862          } else {                     /* device not being used */
 863             autochanger_list(jcr, dev, dir);
 864          }
 865          V(dev->mutex);
 866       } else {
 867          bnet_fsend(dir, _("3999 Device %s not found\n"), devname);
 868       }
 869    } else {
 870       pm_strcpy(&jcr->errmsg, dir->msg);
 871       bnet_fsend(dir, _("3907 Error scanning autocharger list command: %s\n"),
 872          jcr->errmsg);
 873    }
 874    free_memory(devname);
 875    bnet_sig(dir, BNET_EOD);
 876    return 1;
 877 }