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              bmicrosleep(30, 0);
 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    bsteal_lock_t hold;
 435
 436    steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
 437
 438    jcr->VolumeName[0] = 0;
 439    block = new_block(dev);
 440    dev->state &= ~ST_LABEL;           /* force read of label */
 441    switch (read_dev_volume_label(jcr, dev, block)) {
 442       case VOL_OK:
 443          bnet_fsend(dir, _("3001 Mounted Volume: %s\n"), dev->VolHdr.VolName);
 444          stat = 1;
 445          break;
 446       default:
 447          bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device \"%s\" because:\n%s\n"),
 448             dev->dev_name, jcr->errmsg);
 449          stat = 0;
 450          break;
 451    }
 452    free_block(block);
 453    return_device_lock(dev, &hold);
 454    return stat;
 455 }
 456
 457 /*
 458  * Mount command from Director
 459  */
 460 static int mount_cmd(JCR *jcr)
 461 {
 462    POOLMEM *dev_name;
 463    BSOCK *dir = jcr->dir_bsock;
 464    DEVRES *device;
 465    DEVICE *dev;
 466    int found = 0;
 467
 468    dev_name = get_memory(dir->msglen+1);
 469    if (sscanf(dir->msg, "mount %s", dev_name) == 1) {
 470       unbash_spaces(dev_name);
 471       device = NULL;
 472       LockRes();
 473       while ((device=(DEVRES *)GetNextRes(R_DEVICE, (RES *)device))) {
 474          /* Find resource, and make sure we were able to open it */
 475          if (strcmp(device->hdr.name, dev_name) == 0 && device->dev) {
 476             Dmsg1(20, "Found device %s\n", device->hdr.name);
 477             found = 1;
 478             break;
 479          }
 480       }
 481       UnlockRes();
 482       if (found) {
 483          jcr->device = device;
 484          dev = device->dev;
 485          P(dev->mutex);               /* Use P to avoid indefinite block */
 486          switch (dev->dev_blocked) {         /* device blocked? */
 487             DEV_BLOCK *block;
 488             case BST_WAITING_FOR_SYSOP:
 489                /* Someone is waiting, wake him */
 490                Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
 491                dev->dev_blocked = BST_MOUNT;
 492                pthread_cond_signal(&dev->wait_next_vol);
 493                bnet_fsend(dir, "3001 OK mount. Device=%s\n", dev->dev_name);
 494                break;
 495
 496             case BST_UNMOUNTED_WAITING_FOR_SYSOP:
 497             case BST_UNMOUNTED:
 498                /* We freed the device, so reopen it and wake any waiting threads */
 499                if (open_dev(dev, NULL, READ_WRITE) < 0) {
 500                   bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
 501                      strerror_dev(dev));
 502                   break;
 503                }
 504                block = new_block(dev);
 505                read_dev_volume_label(jcr, dev, block);
 506                free_block(block);
 507                if (dev->dev_blocked == BST_UNMOUNTED) {
 508                   Dmsg0(100, "Unmounted. Unblocking device\n");
 509                   read_label(jcr, dev);
 510                   unblock_device(dev);
 511                } else {
 512                   Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
 513                   dev->dev_blocked = BST_MOUNT;
 514                   pthread_cond_signal(&dev->wait_next_vol);
 515                }
 516                if (dev->state & ST_LABEL) {
 517                   bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
 518                      dev->dev_name, dev->VolHdr.VolName);
 519                } else {
 520                   bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
 521                                     "Try unmounting and remounting the Volume.\n"),
 522                              dev->dev_name);
 523                }
 524                break;
 525
 526             case BST_DOING_ACQUIRE:
 527                bnet_fsend(dir, _("3001 Device %s is mounted; doing acquire.\n"),
 528                           dev->dev_name);
 529                break;
 530
 531             case BST_WRITING_LABEL:
 532                bnet_fsend(dir, _("3903 Device %s is being labeled.\n"), dev->dev_name);
 533                break;
 534
 535             case BST_NOT_BLOCKED:
 536                if (dev->state & ST_OPENED) {
 537                   if (dev->state & ST_LABEL) {
 538                      bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
 539                         dev->dev_name, dev->VolHdr.VolName);
 540                   } else {
 541                      bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
 542                                     "Try unmounting and remounting the Volume.\n"),
 543                                 dev->dev_name);
 544                   }
 545                } else {
 546                   if (!dev_is_tape(dev)) {
 547                      bnet_fsend(dir, _("3906 cannot mount non-tape.\n"));
 548                      break;
 549                   }
 550                   if (open_dev(dev, NULL, READ_WRITE) < 0) {
 551                      bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
 552                         strerror_dev(dev));
 553                      break;
 554                   }
 555                   read_label(jcr, dev);
 556                   if (dev->state & ST_LABEL) {
 557                      bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
 558                         dev->dev_name, dev->VolHdr.VolName);
 559                   } else {
 560                      bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
 561                                        "Try unmounting and remounting the Volume.\n"),
 562                                 dev->dev_name);
 563                   }
 564                }
 565                break;
 566
 567             default:
 568                bnet_fsend(dir, _("3905 Bizarre wait state %d\n"), dev->dev_blocked);
 569                break;
 570          }
 571          V(dev->mutex);
 572       } else {
 573          bnet_fsend(dir, _("3999 Device %s not found\n"), dev_name);
 574       }
 575    } else {
 576       pm_strcpy(&jcr->errmsg, dir->msg);
 577       bnet_fsend(dir, _("3906 Error scanning mount command: %s\n"), jcr->errmsg);
 578    }
 579    free_memory(dev_name);
 580    bnet_sig(dir, BNET_EOD);
 581    return 1;
 582 }
 583
 584 /*
 585  * unmount command from Director
 586  */
 587 static int unmount_cmd(JCR *jcr)
 588 {
 589    POOLMEM *dname;
 590    BSOCK *dir = jcr->dir_bsock;
 591    DEVRES *device;
 592    DEVICE *dev;
 593    int found = 0;
 594
 595    dname = get_memory(dir->msglen+1);
 596    if (sscanf(dir->msg, "unmount %s", dname) == 1) {
 597       unbash_spaces(dname);
 598       device = NULL;
 599       LockRes();
 600       while ((device=(DEVRES *)GetNextRes(R_DEVICE, (RES *)device))) {
 601          /* Find resource, and make sure we were able to open it */
 602          if (strcmp(device->hdr.name, dname) == 0 && device->dev) {
 603             Dmsg1(20, "Found device %s\n", device->hdr.name);
 604             found = 1;
 605             break;
 606          }
 607       }
 608       UnlockRes();
 609       if (found) {
 610          jcr->device = device;
 611          dev = device->dev;
 612          P(dev->mutex);               /* Use P to avoid indefinite block */
 613          if (!(dev->state & ST_OPENED)) {
 614             Dmsg0(90, "Device already unmounted\n");
 615             bnet_fsend(dir, _("3901 Device %s is already unmounted.\n"), dev_name(dev));
 616
 617          } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP) {
 618             Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
 619                dev->dev_blocked);
 620             if (dev_cap(dev, CAP_OFFLINEUNMOUNT)) {
 621                offline_dev(dev);
 622             }
 623             force_close_dev(dev);
 624             dev->dev_blocked = BST_UNMOUNTED_WAITING_FOR_SYSOP;
 625             bnet_fsend(dir, _("3001 Device %s unmounted.\n"), dev_name(dev));
 626
 627          } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
 628             bnet_fsend(dir, _("3902 Device %s is busy in acquire.\n"),
 629                dev_name(dev));
 630
 631          } else if (dev->dev_blocked == BST_WRITING_LABEL) {
 632             bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
 633                dev_name(dev));
 634
 635          } else if (dev->state & ST_READ || dev->num_writers) {
 636             if (dev->state & ST_READ) {
 637                 Dmsg0(90, "Device in read mode\n");
 638                 bnet_fsend(dir, _("3904 Device %s is busy with 1 reader.\n"),
 639                    dev_name(dev));
 640             } else {
 641                 Dmsg1(90, "Device busy with %d writers\n", dev->num_writers);
 642                 bnet_fsend(dir, _("3905 Device %s is busy with %d writer(s).\n"),
 643                    dev_name(dev), dev->num_writers);
 644             }
 645
 646          } else {                     /* device not being used */
 647             Dmsg0(90, "Device not in use, unmounting\n");
 648             block_device(dev, BST_UNMOUNTED);
 649             if (dev_cap(dev, CAP_OFFLINEUNMOUNT)) {
 650                offline_dev(dev);
 651             }
 652             force_close_dev(dev);
 653             bnet_fsend(dir, _("3002 Device %s unmounted.\n"), dev_name(dev));
 654          }
 655          V(dev->mutex);
 656       } else {
 657          bnet_fsend(dir, _("3999 Device %s not found\n"), dname);
 658       }
 659    } else {
 660       /* NB dir->msg gets clobbered in bnet_fsend, so save command */
 661       pm_strcpy(&jcr->errmsg, dir->msg);
 662       bnet_fsend(dir, _("3907 Error scanning unmount command: %s\n"), jcr->errmsg);
 663    }
 664    free_memory(dname);
 665    bnet_sig(dir, BNET_EOD);
 666    return 1;
 667 }
 668
 669 /*
 670  * Status command from Director
 671  */
 672 static int status_cmd(JCR *jcr)
 673 {
 674    DEVRES *device;
 675    DEVICE *dev;
 676    int found, bps, sec, bpb;
 677    BSOCK *user = jcr->dir_bsock;
 678    char dt[MAX_TIME_LENGTH];
 679    char b1[30], b2[30], b3[30];
 680
 681    bnet_fsend(user, "\n%s Version: " VERSION " (" BDATE ")\n", my_name);
 682    bstrftime(dt, sizeof(dt), daemon_start_time);
 683    bnet_fsend(user, _("Daemon started %s, %d Job%s run.\n"), dt, last_job.NumJobs,
 684         last_job.NumJobs == 1 ? "" : "s");
 685    if (last_job.NumJobs > 0) {
 686       char termstat[30];
 687
 688       bstrftime(dt, sizeof(dt), last_job.end_time);
 689       bnet_fsend(user, _("Last Job %s finished at %s\n"), last_job.Job, dt);
 690
 691       jobstatus_to_ascii(last_job.JobStatus, termstat, sizeof(termstat));
 692       bnet_fsend(user, _("  Files=%s Bytes=%s Termination Status=%s\n"),
 693            edit_uint64_with_commas(last_job.JobFiles, b1),
 694            edit_uint64_with_commas(last_job.JobBytes, b2),
 695            termstat);
 696    }
 697
 698    LockRes();
 699    for (device=NULL;  (device=(DEVRES *)GetNextRes(R_DEVICE, (RES *)device)); ) {
 700       for (dev=device->dev; dev; dev=dev->next) {
 701          if (dev->state & ST_OPENED) {
 702             if (dev->state & ST_LABEL) {
 703                bnet_fsend(user, _("Device %s is mounted with Volume \"%s\"\n"),
 704                   dev_name(dev), dev->VolHdr.VolName);
 705             } else {
 706                bnet_fsend(user, _("Device %s open but no Bacula volume is mounted.\n"), dev_name(dev));
 707             }
 708             send_blocked_status(jcr, dev);
 709             bpb = dev->VolCatInfo.VolCatBlocks;
 710             if (bpb <= 0) {
 711                bpb = 1;
 712             }
 713             bpb = dev->VolCatInfo.VolCatBytes / bpb;
 714             bnet_fsend(user, _("    Total Bytes=%s Blocks=%s Bytes/block=%s\n"),
 715                edit_uint64_with_commas(dev->VolCatInfo.VolCatBytes, b1),
 716                edit_uint64_with_commas(dev->VolCatInfo.VolCatBlocks, b2),
 717                edit_uint64_with_commas(bpb, b3));
 718             bnet_fsend(user, _("    Positioned at File=%s Block=%s\n"),
 719                edit_uint64_with_commas(dev->file, b1),
 720                edit_uint64_with_commas(dev->block_num, b2));
 721
 722          } else {
 723             bnet_fsend(user, _("Device %s is not open.\n"), dev_name(dev));
 724             send_blocked_status(jcr, dev);
 725          }
 726       }
 727    }
 728    UnlockRes();
 729
 730    found = 0;
 731    lock_jcr_chain();
 732    /* NOTE, we reuse a calling argument jcr. Be warned! */
 733    for (jcr=NULL; (jcr=get_next_jcr(jcr)); ) {
 734       if (jcr->JobStatus == JS_WaitFD) {
 735          bnet_fsend(user, _("%s Job %s waiting for Client connection.\n"),
 736             job_type_to_str(jcr->JobType), jcr->Job);
 737       }
 738       if (jcr->device) {
 739          bnet_fsend(user, _("%s %s job %s is using device %s volume %s\n"),
 740                    job_level_to_str(jcr->JobLevel),
 741                    job_type_to_str(jcr->JobType),
 742                    jcr->Job, jcr->device->device_name,
 743                    jcr->VolumeName);
 744          sec = time(NULL) - jcr->run_time;
 745          if (sec <= 0) {
 746             sec = 1;
 747          }
 748          bps = jcr->JobBytes / sec;
 749          bnet_fsend(user, _("    Files=%s Bytes=%s Bytes/sec=%s\n"),
 750             edit_uint64_with_commas(jcr->JobFiles, b1),
 751             edit_uint64_with_commas(jcr->JobBytes, b2),
 752             edit_uint64_with_commas(bps, b3));
 753          found = 1;
 754 #ifdef DEBUG
 755          if (jcr->file_bsock) {
 756             bnet_fsend(user, "    FDReadSeqNo=%" lld " fd=%d\n",
 757                jcr->file_bsock->read_seqno, jcr->file_bsock->fd);
 758          } else {
 759             bnet_fsend(user, "    FDSocket closed\n");
 760          }
 761 #endif
 762       }
 763       free_locked_jcr(jcr);
 764    }
 765    unlock_jcr_chain();
 766    if (!found) {
 767       bnet_fsend(user, _("No jobs running.\n"));
 768    }
 769
 770 #ifdef full_status
 771    bnet_fsend(user, "\n\n");
 772    dump_resource(R_DEVICE, resources[R_DEVICE-r_first].res_head, sendit, user);
 773 #endif
 774    bnet_fsend(user, "====\n");
 775
 776    bnet_sig(user, BNET_EOD);
 777    return 1;
 778 }
 779
 780 static void send_blocked_status(JCR *jcr, DEVICE *dev)
 781 {
 782    BSOCK *user = jcr->dir_bsock;
 783
 784    switch (dev->dev_blocked) {
 785       case BST_UNMOUNTED:
 786          bnet_fsend(user, _("    Device is BLOCKED. User unmounted.\n"));
 787          break;
 788       case BST_UNMOUNTED_WAITING_FOR_SYSOP:
 789          bnet_fsend(user, _("    Device is BLOCKED. User unmounted during wait for media/mount.\n"));
 790          break;
 791       case BST_WAITING_FOR_SYSOP:
 792          if (jcr->JobStatus == JS_WaitMount) {
 793             bnet_fsend(user, _("    Device is BLOCKED waiting for mount.\n"));
 794          } else {
 795             bnet_fsend(user, _("    Device is BLOCKED waiting for appendable media.\n"));
 796          }
 797          break;
 798       case BST_DOING_ACQUIRE:
 799          bnet_fsend(user, _("    Device is being initialized.\n"));
 800          break;
 801       case BST_WRITING_LABEL:
 802          bnet_fsend(user, _("    Device is blocked labeling a Volume.\n"));
 803          break;
 804       default:
 805          break;
 806    }
 807 }
 808
 809 /*
 810  * Autochanger command from Director
 811  */
 812 static int autochanger_cmd(JCR *jcr)
 813 {
 814    POOLMEM *devname;
 815    BSOCK *dir = jcr->dir_bsock;
 816    DEVRES *device;
 817    DEVICE *dev;
 818    int found = 0;
 819
 820    devname = get_memory(dir->msglen+1);
 821    if (sscanf(dir->msg, "autochanger list %s ", devname) == 1) {
 822       unbash_spaces(devname);
 823       device = NULL;
 824       LockRes();
 825       while ((device=(DEVRES *)GetNextRes(R_DEVICE, (RES *)device))) {
 826          /* Find resource, and make sure we were able to open it */
 827          if (strcmp(device->hdr.name, devname) == 0 && device->dev) {
 828             Dmsg1(20, "Found device %s\n", device->hdr.name);
 829             found = 1;
 830             break;
 831          }
 832       }
 833       UnlockRes();
 834       if (found) {
 835          jcr->device = device;
 836          dev = device->dev;
 837          P(dev->mutex);               /* Use P to avoid indefinite block */
 838          if (!(dev->state & ST_OPENED)) {
 839             if (open_dev(dev, NULL, READ_WRITE) < 0) {
 840                bnet_fsend(dir, _("3994 Connot open device: %s\n"), strerror_dev(dev));
 841             } else {
 842                autochanger_list(jcr, dev, dir);
 843                force_close_dev(dev);
 844             }
 845          /* Under certain "safe" conditions, we can steal the lock */
 846          } else if (dev->dev_blocked &&
 847                     (dev->dev_blocked == BST_UNMOUNTED ||
 848                      dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
 849                      dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP)) {
 850             autochanger_list(jcr, dev, dir);
 851          } else if (dev->state & ST_READ || dev->num_writers) {
 852             if (dev->state & ST_READ) {
 853                 bnet_fsend(dir, _("3901 Device %s is busy with 1 reader.\n"),
 854                    dev_name(dev));
 855             } else {
 856                 bnet_fsend(dir, _("3902 Device %s is busy with %d writer(s).\n"),
 857                    dev_name(dev), dev->num_writers);
 858             }
 859          } else {                     /* device not being used */
 860             autochanger_list(jcr, dev, dir);
 861          }
 862          V(dev->mutex);
 863       } else {
 864          bnet_fsend(dir, _("3999 Device %s not found\n"), devname);
 865       }
 866    } else {
 867       pm_strcpy(&jcr->errmsg, dir->msg);
 868       bnet_fsend(dir, _("3907 Error scanning autocharger list command: %s\n"),
 869          jcr->errmsg);
 870    }
 871    free_memory(devname);
 872    bnet_sig(dir, BNET_EOD);
 873    return 1;
 874 }