lustre/obdclass/class_obd.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * Object Devices Class Driver
   5  *
   6  *  Copyright (C) 2001-2003 Cluster File Systems, Inc.
   7  *
   8  *   This file is part of the Lustre file system, http://www.lustre.org
   9  *   Lustre is a trademark of Cluster File Systems, Inc.
  10  *
  11  *   You may have signed or agreed to another license before downloading
  12  *   this software.  If so, you are bound by the terms and conditions
  13  *   of that agreement, and the following does not apply to you.  See the
  14  *   LICENSE file included with this distribution for more information.
  15  *
  16  *   If you did not agree to a different license, then this copy of Lustre
  17  *   is open source software; you can redistribute it and/or modify it
  18  *   under the terms of version 2 of the GNU General Public License as
  19  *   published by the Free Software Foundation.
  20  *
  21  *   In either case, Lustre is distributed in the hope that it will be
  22  *   useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  23  *   of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  *   license text for more details.
  25  *
  26  * These are the only exported functions, they provide some generic
  27  * infrastructure for managing object devices
  28  */
  29
  30 #define DEBUG_SUBSYSTEM S_CLASS
  31 #ifndef EXPORT_SYMTAB
  32 # define EXPORT_SYMTAB
  33 #endif
  34 #ifndef __KERNEL__
  35 # include <liblustre.h>
  36 #endif
  37
  38 #include <obd_support.h>
  39 #include <obd_class.h>
  40 #include <lustre_debug.h>
  41 #include <lprocfs_status.h>
  42 #ifdef __KERNEL__
  43 #include <linux/lustre_build_version.h>
  44 #endif
  45 #include <libcfs/list.h>
  46 #include "llog_internal.h"
  47
  48 #ifndef __KERNEL__
  49 /* liblustre workaround */
  50 atomic_t libcfs_kmemory = {0};
  51 #endif
  52
  53 struct obd_device *obd_devs[MAX_OBD_DEVICES];
  54 struct list_head obd_types;
  55 spinlock_t obd_dev_lock = SPIN_LOCK_UNLOCKED;
  56 #ifndef __KERNEL__
  57 atomic_t obd_memory;
  58 int obd_memmax;
  59 #endif
  60
  61 /* The following are visible and mutable through /proc/sys/lustre/. */
  62 unsigned int obd_fail_loc;
  63 unsigned int obd_dump_on_timeout;
  64 unsigned int obd_dump_on_eviction;
  65 unsigned int obd_timeout = 100; /* seconds */
  66 unsigned int ldlm_timeout = 20; /* seconds */
  67 unsigned int obd_health_check_timeout = 120; /* seconds */
  68 unsigned int obd_max_dirty_pages = 256;
  69 atomic_t obd_dirty_pages;
  70
  71 cfs_waitq_t obd_race_waitq;
  72 int obd_race_state;
  73
  74 #ifdef __KERNEL__
  75 unsigned int obd_print_fail_loc(void)
  76 {
  77         CWARN("obd_fail_loc = %x\n", obd_fail_loc);
  78         return obd_fail_loc;
  79 }
  80
  81 void obd_set_fail_loc(unsigned int fl)
  82 {
  83         obd_fail_loc = fl;
  84 }
  85
  86 /*  opening /dev/obd */
  87 static int obd_class_open(unsigned long flags, void *args)
  88 {
  89         ENTRY;
  90
  91         PORTAL_MODULE_USE;
  92         RETURN(0);
  93 }
  94
  95 /*  closing /dev/obd */
  96 static int obd_class_release(unsigned long flags, void *args)
  97 {
  98         ENTRY;
  99
 100         PORTAL_MODULE_UNUSE;
 101         RETURN(0);
 102 }
 103 #endif
 104
 105 static inline void obd_data2conn(struct lustre_handle *conn,
 106                                  struct obd_ioctl_data *data)
 107 {
 108         memset(conn, 0, sizeof *conn);
 109         conn->cookie = data->ioc_cookie;
 110 }
 111
 112 static inline void obd_conn2data(struct obd_ioctl_data *data,
 113                                  struct lustre_handle *conn)
 114 {
 115         data->ioc_cookie = conn->cookie;
 116 }
 117
 118 int class_resolve_dev_name(uint32_t len, const char *name)
 119 {
 120         int rc;
 121         int dev;
 122
 123         ENTRY;
 124         if (!len || !name) {
 125                 CERROR("No name passed,!\n");
 126                 GOTO(out, rc = -EINVAL);
 127         }
 128         if (name[len - 1] != 0) {
 129                 CERROR("Name not nul terminated!\n");
 130                 GOTO(out, rc = -EINVAL);
 131         }
 132
 133         CDEBUG(D_IOCTL, "device name %s\n", name);
 134         dev = class_name2dev(name);
 135         if (dev == -1) {
 136                 CDEBUG(D_IOCTL, "No device for name %s!\n", name);
 137                 GOTO(out, rc = -EINVAL);
 138         }
 139
 140         CDEBUG(D_IOCTL, "device name %s, dev %d\n", name, dev);
 141         rc = dev;
 142
 143 out:
 144         RETURN(rc);
 145 }
 146
 147 int class_handle_ioctl(unsigned int cmd, unsigned long arg)
 148 {
 149         char *buf = NULL;
 150         struct obd_ioctl_data *data;
 151         struct libcfs_debug_ioctl_data *debug_data;
 152         struct obd_device *obd = NULL;
 153         int err = 0, len = 0;
 154         ENTRY;
 155
 156         /* only for debugging */
 157         if (cmd == LIBCFS_IOC_DEBUG_MASK) {
 158                 debug_data = (struct libcfs_debug_ioctl_data*)arg;
 159                 libcfs_subsystem_debug = debug_data->subs;
 160                 libcfs_debug = debug_data->debug;
 161                 return 0;
 162         }
 163
 164         CDEBUG(D_IOCTL, "cmd = %x\n", cmd);
 165         if (obd_ioctl_getdata(&buf, &len, (void *)arg)) {
 166                 CERROR("OBD ioctl: data error\n");
 167                 GOTO(out, err = -EINVAL);
 168         }
 169         data = (struct obd_ioctl_data *)buf;
 170
 171         switch (cmd) {
 172         case OBD_IOC_PROCESS_CFG: {
 173                 struct lustre_cfg *lcfg;
 174
 175                 if (!data->ioc_plen1 || !data->ioc_pbuf1) {
 176                         CERROR("No config buffer passed!\n");
 177                         GOTO(out, err = -EINVAL);
 178                 }
 179                 OBD_ALLOC(lcfg, data->ioc_plen1);
 180                 if (lcfg == NULL)
 181                         GOTO(out, err = -ENOMEM);
 182                 err = copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1);
 183                 if (!err)
 184                         err = lustre_cfg_sanity_check(lcfg, data->ioc_plen1);
 185                 if (!err)
 186                         err = class_process_config(lcfg);
 187                 OBD_FREE(lcfg, data->ioc_plen1);
 188                 GOTO(out, err);
 189         }
 190
 191         case OBD_GET_VERSION:
 192                 if (!data->ioc_inlbuf1) {
 193                         CERROR("No buffer passed in ioctl\n");
 194                         GOTO(out, err = -EINVAL);
 195                 }
 196
 197                 if (strlen(BUILD_VERSION) + 1 > data->ioc_inllen1) {
 198                         CERROR("ioctl buffer too small to hold version\n");
 199                         GOTO(out, err = -EINVAL);
 200                 }
 201
 202                 memcpy(data->ioc_bulk, BUILD_VERSION,
 203                        strlen(BUILD_VERSION) + 1);
 204
 205                 err = obd_ioctl_popdata((void *)arg, data, len);
 206                 if (err)
 207                         err = -EFAULT;
 208                 GOTO(out, err);
 209
 210         case OBD_IOC_NAME2DEV: {
 211                 /* Resolve a device name.  This does not change the
 212                  * currently selected device.
 213                  */
 214                 int dev;
 215
 216                 dev = class_resolve_dev_name(data->ioc_inllen1,
 217                                              data->ioc_inlbuf1);
 218                 data->ioc_dev = dev;
 219                 if (dev < 0)
 220                         GOTO(out, err = -EINVAL);
 221
 222                 err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
 223                 if (err)
 224                         err = -EFAULT;
 225                 GOTO(out, err);
 226         }
 227
 228         case OBD_IOC_UUID2DEV: {
 229                 /* Resolve a device uuid.  This does not change the
 230                  * currently selected device.
 231                  */
 232                 int dev;
 233                 struct obd_uuid uuid;
 234
 235                 if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
 236                         CERROR("No UUID passed!\n");
 237                         GOTO(out, err = -EINVAL);
 238                 }
 239                 if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
 240                         CERROR("UUID not NUL terminated!\n");
 241                         GOTO(out, err = -EINVAL);
 242                 }
 243
 244                 CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1);
 245                 obd_str2uuid(&uuid, data->ioc_inlbuf1);
 246                 dev = class_uuid2dev(&uuid);
 247                 data->ioc_dev = dev;
 248                 if (dev == -1) {
 249                         CDEBUG(D_IOCTL, "No device for UUID %s!\n",
 250                                data->ioc_inlbuf1);
 251                         GOTO(out, err = -EINVAL);
 252                 }
 253
 254                 CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1,
 255                        dev);
 256                 err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
 257                 if (err)
 258                         err = -EFAULT;
 259                 GOTO(out, err);
 260         }
 261
 262         case OBD_IOC_CLOSE_UUID: {
 263                 CDEBUG(D_IOCTL, "closing all connections to uuid %s (NOOP)\n",
 264                        data->ioc_inlbuf1);
 265                 GOTO(out, err = 0);
 266         }
 267
 268         case OBD_IOC_GETDEVICE: {
 269                 int     index = data->ioc_count;
 270                 char    *status, *str;
 271
 272                 if (!data->ioc_inlbuf1) {
 273                         CERROR("No buffer passed in ioctl\n");
 274                         GOTO(out, err = -EINVAL);
 275                 }
 276                 if (data->ioc_inllen1 < 128) {
 277                         CERROR("ioctl buffer too small to hold version\n");
 278                         GOTO(out, err = -EINVAL);
 279                 }
 280
 281                 obd = class_num2obd(index);
 282                 if (!obd)
 283                         GOTO(out, err = -ENOENT);
 284
 285                 if (obd->obd_stopping)
 286                         status = "ST";
 287                 else if (obd->obd_set_up)
 288                         status = "UP";
 289                 else if (obd->obd_attached)
 290                         status = "AT";
 291                 else
 292                         status = "--";
 293                 str = (char *)data->ioc_bulk;
 294                 snprintf(str, len - sizeof(*data), "%3d %s %s %s %s %d",
 295                          (int)index, status, obd->obd_type->typ_name,
 296                          obd->obd_name, obd->obd_uuid.uuid,
 297                          atomic_read(&obd->obd_refcount));
 298                 err = obd_ioctl_popdata((void *)arg, data, len);
 299
 300                 GOTO(out, err = 0);
 301         }
 302
 303         }
 304
 305         if (data->ioc_dev >= class_devno_max()) {
 306                 CERROR("OBD ioctl: No device\n");
 307                 GOTO(out, err = -EINVAL);
 308         }
 309
 310         obd = class_num2obd(data->ioc_dev);
 311         if (obd == NULL) {
 312                 CERROR("OBD ioctl : No Device %d\n", data->ioc_dev);
 313                 GOTO(out, err = -EINVAL);
 314         }
 315         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
 316
 317         if (!obd->obd_set_up || obd->obd_stopping) {
 318                 CERROR("OBD ioctl: device not setup %d \n", data->ioc_dev);
 319                 GOTO(out, err = -EINVAL);
 320         }
 321
 322         switch(cmd) {
 323         case OBD_IOC_NO_TRANSNO: {
 324                 if (!obd->obd_attached) {
 325                         CERROR("Device %d not attached\n", obd->obd_minor);
 326                         GOTO(out, err = -ENODEV);
 327                 }
 328                 CDEBUG(D_HA, "%s: disabling committed-transno notification\n",
 329                        obd->obd_name);
 330                 obd->obd_no_transno = 1;
 331                 GOTO(out, err = 0);
 332         }
 333
 334         default: {
 335                 err = obd_iocontrol(cmd, obd->obd_self_export, len, data, NULL);
 336                 if (err)
 337                         GOTO(out, err);
 338
 339                 err = obd_ioctl_popdata((void *)arg, data, len);
 340                 if (err)
 341                         err = -EFAULT;
 342                 GOTO(out, err);
 343         }
 344         }
 345
 346  out:
 347         if (buf)
 348                 obd_ioctl_freedata(buf, len);
 349         RETURN(err);
 350 } /* class_handle_ioctl */
 351
 352
 353
 354 #define OBD_MINOR 241
 355 #ifdef __KERNEL__
 356 /* to control /dev/obd */
 357 static int obd_class_ioctl (struct cfs_psdev_file *pfile, unsigned long cmd,
 358                             void *arg)
 359 {
 360         return class_handle_ioctl(cmd, (unsigned long)arg);
 361 }
 362
 363 /* declare character device */
 364 struct cfs_psdev_ops obd_psdev_ops = {
 365         /* .p_open    = */ obd_class_open,      /* open */
 366         /* .p_close   = */ obd_class_release,   /* release */
 367         /* .p_read    = */ NULL,
 368         /* .p_write   = */ NULL,
 369         /* .p_ioctl   = */ obd_class_ioctl     /* ioctl */
 370 };
 371
 372 extern cfs_psdev_t obd_psdev;
 373 #else
 374 void *obd_psdev = NULL;
 375 #endif
 376
 377 EXPORT_SYMBOL(obd_devs);
 378 EXPORT_SYMBOL(obd_fail_loc);
 379 EXPORT_SYMBOL(obd_print_fail_loc);
 380 EXPORT_SYMBOL(obd_race_waitq);
 381 EXPORT_SYMBOL(obd_race_state);
 382 EXPORT_SYMBOL(obd_dump_on_timeout);
 383 EXPORT_SYMBOL(obd_dump_on_eviction);
 384 EXPORT_SYMBOL(obd_timeout);
 385 EXPORT_SYMBOL(ldlm_timeout);
 386 EXPORT_SYMBOL(obd_health_check_timeout);
 387 EXPORT_SYMBOL(obd_max_dirty_pages);
 388 EXPORT_SYMBOL(obd_dirty_pages);
 389 EXPORT_SYMBOL(ptlrpc_put_connection_superhack);
 390
 391 EXPORT_SYMBOL(proc_lustre_root);
 392
 393 EXPORT_SYMBOL(class_register_type);
 394 EXPORT_SYMBOL(class_unregister_type);
 395 EXPORT_SYMBOL(class_get_type);
 396 EXPORT_SYMBOL(class_put_type);
 397 EXPORT_SYMBOL(class_name2dev);
 398 EXPORT_SYMBOL(class_name2obd);
 399 EXPORT_SYMBOL(class_uuid2dev);
 400 EXPORT_SYMBOL(class_uuid2obd);
 401 EXPORT_SYMBOL(class_find_client_obd);
 402 EXPORT_SYMBOL(class_find_client_notype);
 403 EXPORT_SYMBOL(class_devices_in_group);
 404 EXPORT_SYMBOL(class_conn2export);
 405 EXPORT_SYMBOL(class_exp2obd);
 406 EXPORT_SYMBOL(class_conn2obd);
 407 EXPORT_SYMBOL(class_exp2cliimp);
 408 EXPORT_SYMBOL(class_conn2cliimp);
 409 EXPORT_SYMBOL(class_disconnect);
 410 EXPORT_SYMBOL(class_num2obd);
 411
 412 /* uuid.c */
 413 EXPORT_SYMBOL(class_generate_random_uuid);
 414 EXPORT_SYMBOL(class_uuid_unparse);
 415 EXPORT_SYMBOL(lustre_uuid_to_peer);
 416
 417 EXPORT_SYMBOL(class_handle_hash);
 418 EXPORT_SYMBOL(class_handle_unhash);
 419 EXPORT_SYMBOL(class_handle2object);
 420
 421 /* obd_config.c */
 422 EXPORT_SYMBOL(class_incref);
 423 EXPORT_SYMBOL(class_decref);
 424 EXPORT_SYMBOL(class_get_profile);
 425 EXPORT_SYMBOL(class_del_profile);
 426 EXPORT_SYMBOL(class_del_profiles);
 427 EXPORT_SYMBOL(class_process_config);
 428 EXPORT_SYMBOL(class_process_proc_param);
 429 EXPORT_SYMBOL(class_config_parse_llog);
 430 EXPORT_SYMBOL(class_config_dump_llog);
 431 EXPORT_SYMBOL(class_attach);
 432 EXPORT_SYMBOL(class_setup);
 433 EXPORT_SYMBOL(class_cleanup);
 434 EXPORT_SYMBOL(class_detach);
 435 EXPORT_SYMBOL(class_manual_cleanup);
 436
 437 #define OBD_INIT_CHECK
 438 #ifdef OBD_INIT_CHECK
 439 int obd_init_checks(void)
 440 {
 441         __u64 u64val, div64val;
 442         char buf[64];
 443         int len, ret = 0;
 444
 445         CDEBUG(D_INFO, "LPU64=%s, LPD64=%s, LPX64=%s, LPSZ=%s, LPSSZ=%s\n",
 446                LPU64, LPD64, LPX64, LPSZ, LPSSZ);
 447
 448         CDEBUG(D_INFO, "OBD_OBJECT_EOF = "LPX64"\n", (__u64)OBD_OBJECT_EOF);
 449
 450         u64val = OBD_OBJECT_EOF;
 451         CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
 452         if (u64val != OBD_OBJECT_EOF) {
 453                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 454                        u64val, (int)sizeof(u64val));
 455                 ret = -EINVAL;
 456         }
 457         len = snprintf(buf, sizeof(buf), LPX64, u64val);
 458         if (len != 18) {
 459                 CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
 460                 ret = -EINVAL;
 461         }
 462
 463         div64val = OBD_OBJECT_EOF;
 464         CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
 465         if (u64val != OBD_OBJECT_EOF) {
 466                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 467                        u64val, (int)sizeof(u64val));
 468                 ret = -EOVERFLOW;
 469         }
 470         if (u64val >> 8 != OBD_OBJECT_EOF >> 8) {
 471                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 472                        u64val, (int)sizeof(u64val));
 473                 return -EOVERFLOW;
 474         }
 475         if (do_div(div64val, 256) != (u64val & 255)) {
 476                 CERROR("do_div("LPX64",256) != "LPU64"\n", u64val, u64val &255);
 477                 return -EOVERFLOW;
 478         }
 479         if (u64val >> 8 != div64val) {
 480                 CERROR("do_div("LPX64",256) "LPU64" != "LPU64"\n",
 481                        u64val, div64val, u64val >> 8);
 482                 return -EOVERFLOW;
 483         }
 484         len = snprintf(buf, sizeof(buf), LPX64, u64val);
 485         if (len != 18) {
 486                 CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
 487                 ret = -EINVAL;
 488         }
 489         len = snprintf(buf, sizeof(buf), LPU64, u64val);
 490         if (len != 20) {
 491                 CWARN("LPU64 wrong length! strlen(%s)=%d != 20\n", buf, len);
 492                 ret = -EINVAL;
 493         }
 494         len = snprintf(buf, sizeof(buf), LPD64, u64val);
 495         if (len != 2) {
 496                 CWARN("LPD64 wrong length! strlen(%s)=%d != 2\n", buf, len);
 497                 ret = -EINVAL;
 498         }
 499         if ((u64val & ~CFS_PAGE_MASK) >= CFS_PAGE_SIZE) {
 500                 CWARN("mask failed: u64val "LPU64" >= %lu\n", u64val,
 501                       CFS_PAGE_SIZE);
 502                 ret = -EINVAL;
 503         }
 504
 505         return ret;
 506 }
 507 #else
 508 #define obd_init_checks() do {} while(0)
 509 #endif
 510
 511 extern spinlock_t obd_types_lock;
 512 extern spinlock_t handle_lock;
 513 extern int class_procfs_init(void);
 514 extern int class_procfs_clean(void);
 515
 516 #ifdef __KERNEL__
 517 static int __init init_obdclass(void)
 518 #else
 519 int init_obdclass(void)
 520 #endif
 521 {
 522         int i, err;
 523 #ifdef __KERNEL__
 524         int lustre_register_fs(void);
 525
 526         printk(KERN_INFO "Lustre: OBD class driver, info@clusterfs.com\n");
 527         printk(KERN_INFO "        Lustre Version: "LUSTRE_VERSION_STRING"\n");
 528         printk(KERN_INFO "        Build Version: "BUILD_VERSION"\n");
 529 #else
 530         CDEBUG(D_INFO, "Lustre: OBD class driver, info@clusterfs.com\n");
 531         CDEBUG(D_INFO, "        Lustre Version: "LUSTRE_VERSION_STRING"\n");
 532         CDEBUG(D_INFO, "        Build Version: "BUILD_VERSION"\n");
 533 #endif
 534
 535         spin_lock_init(&obd_types_lock);
 536         spin_lock_init(&handle_lock);
 537         cfs_waitq_init(&obd_race_waitq);
 538         obd_zombie_impexp_init();
 539
 540         err = obd_init_checks();
 541         if (err == -EOVERFLOW)
 542                 return err;
 543
 544         class_init_uuidlist();
 545         err = class_handle_init();
 546         if (err)
 547                 return err;
 548
 549         spin_lock_init(&obd_dev_lock);
 550         INIT_LIST_HEAD(&obd_types);
 551
 552         err = cfs_psdev_register(&obd_psdev);
 553         if (err) {
 554                 CERROR("cannot register %d err %d\n", OBD_MINOR, err);
 555                 return err;
 556         }
 557
 558         /* This struct is already zerod for us (static global) */
 559         for (i = 0; i < class_devno_max(); i++)
 560                 obd_devs[i] = NULL;
 561
 562         /* Default the dirty page cache cap to 1/2 of system memory */
 563         obd_max_dirty_pages = num_physpages / 2;
 564
 565         err = obd_init_caches();
 566         if (err)
 567                 return err;
 568 #ifdef __KERNEL__
 569         err = class_procfs_init();
 570         if (err)
 571                 return err;
 572         err = lustre_register_fs();
 573 #endif
 574
 575         return err;
 576 }
 577
 578 /* liblustre doesn't call cleanup_obdclass, apparently.  we carry on in this
 579  * ifdef to the end of the file to cover module and versioning goo.*/
 580 #ifdef __KERNEL__
 581 static void cleanup_obdclass(void)
 582 {
 583         int i;
 584         int lustre_unregister_fs(void);
 585         ENTRY;
 586
 587         lustre_unregister_fs();
 588
 589         cfs_psdev_deregister(&obd_psdev);
 590         for (i = 0; i < class_devno_max(); i++) {
 591                 struct obd_device *obd = class_num2obd(i);
 592                 if (obd && obd->obd_set_up &&
 593                     OBT(obd) && OBP(obd, detach)) {
 594                         /* XXX should this call generic detach otherwise? */
 595                         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
 596                         OBP(obd, detach)(obd);
 597                 }
 598         }
 599
 600         obd_cleanup_caches();
 601         obd_sysctl_clean();
 602
 603         class_procfs_clean();
 604
 605         class_handle_cleanup();
 606         class_exit_uuidlist();
 607         EXIT;
 608 }
 609
 610 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
 611 MODULE_DESCRIPTION("Lustre Class Driver Build Version: " BUILD_VERSION);
 612 MODULE_LICENSE("GPL");
 613
 614 cfs_module(obdclass, LUSTRE_VERSION_STRING, init_obdclass, cleanup_obdclass);
 615 #endif