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