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 #include <lustre/lustre_build_version.h>
  43 #include <libcfs/list.h>
  44 #include "llog_internal.h"
  45
  46 #ifndef __KERNEL__
  47 /* liblustre workaround */
  48 atomic_t libcfs_kmemory = {0};
  49 #endif
  50
  51 struct obd_device *obd_devs[MAX_OBD_DEVICES];
  52 struct list_head obd_types;
  53 spinlock_t obd_dev_lock = SPIN_LOCK_UNLOCKED;
  54
  55 #ifndef __KERNEL__
  56 __u64 obd_max_pages = 0;
  57 __u64 obd_max_alloc = 0;
  58 __u64 obd_alloc;
  59 __u64 obd_pages;
  60 #endif
  61
  62 /* The following are visible and mutable through /proc/sys/lustre/. */
  63 unsigned int obd_debug_peer_on_timeout;
  64 unsigned int obd_dump_on_timeout;
  65 unsigned int obd_dump_on_eviction;
  66 unsigned int obd_timeout = OBD_TIMEOUT_DEFAULT; /* seconds */
  67 unsigned int ldlm_timeout = LDLM_TIMEOUT_DEFAULT; /* seconds */
  68 unsigned int obd_health_check_timeout = HEALTH_CHECK_TIMEOUT_DEFAULT; /* seconds */
  69 unsigned int obd_max_dirty_pages = 256;
  70 atomic_t obd_dirty_pages;
  71
  72 cfs_waitq_t obd_race_waitq;
  73 int obd_race_state;
  74
  75 #ifdef __KERNEL__
  76 unsigned int obd_print_fail_loc(void)
  77 {
  78         CWARN("obd_fail_loc = %x\n", obd_fail_loc);
  79         return obd_fail_loc;
  80 }
  81
  82 void obd_set_fail_loc(unsigned int fl)
  83 {
  84         obd_fail_loc = fl;
  85 }
  86
  87 /*  opening /dev/obd */
  88 static int obd_class_open(unsigned long flags, void *args)
  89 {
  90         ENTRY;
  91
  92         PORTAL_MODULE_USE;
  93         RETURN(0);
  94 }
  95
  96 /*  closing /dev/obd */
  97 static int obd_class_release(unsigned long flags, void *args)
  98 {
  99         ENTRY;
 100
 101         PORTAL_MODULE_UNUSE;
 102         RETURN(0);
 103 }
 104 #endif
 105
 106 static inline void obd_data2conn(struct lustre_handle *conn,
 107                                  struct obd_ioctl_data *data)
 108 {
 109         memset(conn, 0, sizeof *conn);
 110         conn->cookie = data->ioc_cookie;
 111 }
 112
 113 static inline void obd_conn2data(struct obd_ioctl_data *data,
 114                                  struct lustre_handle *conn)
 115 {
 116         data->ioc_cookie = conn->cookie;
 117 }
 118
 119 int class_resolve_dev_name(__u32 len, const char *name)
 120 {
 121         int rc;
 122         int dev;
 123
 124         ENTRY;
 125         if (!len || !name) {
 126                 CERROR("No name passed,!\n");
 127                 GOTO(out, rc = -EINVAL);
 128         }
 129         if (name[len - 1] != 0) {
 130                 CERROR("Name not nul terminated!\n");
 131                 GOTO(out, rc = -EINVAL);
 132         }
 133
 134         CDEBUG(D_IOCTL, "device name %s\n", name);
 135         dev = class_name2dev(name);
 136         if (dev == -1) {
 137                 CDEBUG(D_IOCTL, "No device for name %s!\n", name);
 138                 GOTO(out, rc = -EINVAL);
 139         }
 140
 141         CDEBUG(D_IOCTL, "device name %s, dev %d\n", name, dev);
 142         rc = dev;
 143
 144 out:
 145         RETURN(rc);
 146 }
 147
 148 int class_handle_ioctl(unsigned int cmd, unsigned long arg)
 149 {
 150         char *buf = NULL;
 151         struct obd_ioctl_data *data;
 152         struct libcfs_debug_ioctl_data *debug_data;
 153         struct obd_device *obd = NULL;
 154         int err = 0, len = 0;
 155         ENTRY;
 156
 157         /* only for debugging */
 158         if (cmd == LIBCFS_IOC_DEBUG_MASK) {
 159                 debug_data = (struct libcfs_debug_ioctl_data*)arg;
 160                 libcfs_subsystem_debug = debug_data->subs;
 161                 libcfs_debug = debug_data->debug;
 162                 return 0;
 163         }
 164
 165         CDEBUG(D_IOCTL, "cmd = %x\n", cmd);
 166         if (obd_ioctl_getdata(&buf, &len, (void *)arg)) {
 167                 CERROR("OBD ioctl: data error\n");
 168                 GOTO(out, err = -EINVAL);
 169         }
 170         data = (struct obd_ioctl_data *)buf;
 171
 172         switch (cmd) {
 173         case OBD_IOC_PROCESS_CFG: {
 174                 struct lustre_cfg *lcfg;
 175
 176                 if (!data->ioc_plen1 || !data->ioc_pbuf1) {
 177                         CERROR("No config buffer passed!\n");
 178                         GOTO(out, err = -EINVAL);
 179                 }
 180                 OBD_ALLOC(lcfg, data->ioc_plen1);
 181                 if (lcfg == NULL)
 182                         GOTO(out, err = -ENOMEM);
 183                 err = copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1);
 184                 if (!err)
 185                         err = lustre_cfg_sanity_check(lcfg, data->ioc_plen1);
 186                 if (!err)
 187                         err = class_process_config(lcfg);
 188
 189                 OBD_FREE(lcfg, data->ioc_plen1);
 190                 GOTO(out, err);
 191         }
 192
 193         case OBD_GET_VERSION:
 194                 if (!data->ioc_inlbuf1) {
 195                         CERROR("No buffer passed in ioctl\n");
 196                         GOTO(out, err = -EINVAL);
 197                 }
 198
 199                 if (strlen(BUILD_VERSION) + 1 > data->ioc_inllen1) {
 200                         CERROR("ioctl buffer too small to hold version\n");
 201                         GOTO(out, err = -EINVAL);
 202                 }
 203
 204                 memcpy(data->ioc_bulk, BUILD_VERSION,
 205                        strlen(BUILD_VERSION) + 1);
 206
 207                 err = obd_ioctl_popdata((void *)arg, data, len);
 208                 if (err)
 209                         err = -EFAULT;
 210                 GOTO(out, err);
 211
 212         case OBD_IOC_NAME2DEV: {
 213                 /* Resolve a device name.  This does not change the
 214                  * currently selected device.
 215                  */
 216                 int dev;
 217
 218                 dev = class_resolve_dev_name(data->ioc_inllen1,
 219                                              data->ioc_inlbuf1);
 220                 data->ioc_dev = dev;
 221                 if (dev < 0)
 222                         GOTO(out, err = -EINVAL);
 223
 224                 err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
 225                 if (err)
 226                         err = -EFAULT;
 227                 GOTO(out, err);
 228         }
 229
 230         case OBD_IOC_UUID2DEV: {
 231                 /* Resolve a device uuid.  This does not change the
 232                  * currently selected device.
 233                  */
 234                 int dev;
 235                 struct obd_uuid uuid;
 236
 237                 if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
 238                         CERROR("No UUID passed!\n");
 239                         GOTO(out, err = -EINVAL);
 240                 }
 241                 if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
 242                         CERROR("UUID not NUL terminated!\n");
 243                         GOTO(out, err = -EINVAL);
 244                 }
 245
 246                 CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1);
 247                 obd_str2uuid(&uuid, data->ioc_inlbuf1);
 248                 dev = class_uuid2dev(&uuid);
 249                 data->ioc_dev = dev;
 250                 if (dev == -1) {
 251                         CDEBUG(D_IOCTL, "No device for UUID %s!\n",
 252                                data->ioc_inlbuf1);
 253                         GOTO(out, err = -EINVAL);
 254                 }
 255
 256                 CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1,
 257                        dev);
 258                 err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
 259                 if (err)
 260                         err = -EFAULT;
 261                 GOTO(out, err);
 262         }
 263
 264         case OBD_IOC_CLOSE_UUID: {
 265                 CDEBUG(D_IOCTL, "closing all connections to uuid %s (NOOP)\n",
 266                        data->ioc_inlbuf1);
 267                 GOTO(out, err = 0);
 268         }
 269
 270         case OBD_IOC_GETDEVICE: {
 271                 int     index = data->ioc_count;
 272                 char    *status, *str;
 273
 274                 if (!data->ioc_inlbuf1) {
 275                         CERROR("No buffer passed in ioctl\n");
 276                         GOTO(out, err = -EINVAL);
 277                 }
 278                 if (data->ioc_inllen1 < 128) {
 279                         CERROR("ioctl buffer too small to hold version\n");
 280                         GOTO(out, err = -EINVAL);
 281                 }
 282
 283                 obd = class_num2obd(index);
 284                 if (!obd)
 285                         GOTO(out, err = -ENOENT);
 286
 287                 if (obd->obd_stopping)
 288                         status = "ST";
 289                 else if (obd->obd_set_up)
 290                         status = "UP";
 291                 else if (obd->obd_attached)
 292                         status = "AT";
 293                 else
 294                         status = "--";
 295                 str = (char *)data->ioc_bulk;
 296                 snprintf(str, len - sizeof(*data), "%3d %s %s %s %s %d",
 297                          (int)index, status, obd->obd_type->typ_name,
 298                          obd->obd_name, obd->obd_uuid.uuid,
 299                          atomic_read(&obd->obd_refcount));
 300                 err = obd_ioctl_popdata((void *)arg, data, len);
 301
 302                 GOTO(out, err = 0);
 303         }
 304
 305         }
 306
 307         if (data->ioc_dev >= class_devno_max()) {
 308                 CERROR("OBD ioctl: No device\n");
 309                 GOTO(out, err = -EINVAL);
 310         }
 311
 312         obd = class_num2obd(data->ioc_dev);
 313         if (obd == NULL) {
 314                 CERROR("OBD ioctl : No Device %d\n", data->ioc_dev);
 315                 GOTO(out, err = -EINVAL);
 316         }
 317         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
 318
 319         if (!obd->obd_set_up || obd->obd_stopping) {
 320                 CERROR("OBD ioctl: device not setup %d \n", data->ioc_dev);
 321                 GOTO(out, err = -EINVAL);
 322         }
 323
 324         switch(cmd) {
 325         case OBD_IOC_NO_TRANSNO: {
 326                 if (!obd->obd_attached) {
 327                         CERROR("Device %d not attached\n", obd->obd_minor);
 328                         GOTO(out, err = -ENODEV);
 329                 }
 330                 CDEBUG(D_HA, "%s: disabling committed-transno notification\n",
 331                        obd->obd_name);
 332                 obd->obd_no_transno = 1;
 333                 GOTO(out, err = 0);
 334         }
 335
 336         default: {
 337                 err = obd_iocontrol(cmd, obd->obd_self_export, len, data, NULL);
 338                 if (err)
 339                         GOTO(out, err);
 340
 341                 err = obd_ioctl_popdata((void *)arg, data, len);
 342                 if (err)
 343                         err = -EFAULT;
 344                 GOTO(out, err);
 345         }
 346         }
 347
 348  out:
 349         if (buf)
 350                 obd_ioctl_freedata(buf, len);
 351         RETURN(err);
 352 } /* class_handle_ioctl */
 353
 354
 355
 356 #define OBD_MINOR 241
 357 #ifdef __KERNEL__
 358 /* to control /dev/obd */
 359 static int obd_class_ioctl (struct cfs_psdev_file *pfile, unsigned long cmd,
 360                             void *arg)
 361 {
 362         return class_handle_ioctl(cmd, (unsigned long)arg);
 363 }
 364
 365 /* declare character device */
 366 struct cfs_psdev_ops obd_psdev_ops = {
 367         /* .p_open    = */ obd_class_open,      /* open */
 368         /* .p_close   = */ obd_class_release,   /* release */
 369         /* .p_read    = */ NULL,
 370         /* .p_write   = */ NULL,
 371         /* .p_ioctl   = */ obd_class_ioctl     /* ioctl */
 372 };
 373
 374 extern cfs_psdev_t obd_psdev;
 375 #else
 376 void *obd_psdev = NULL;
 377 #endif
 378
 379 EXPORT_SYMBOL(obd_devs);
 380 EXPORT_SYMBOL(obd_print_fail_loc);
 381 EXPORT_SYMBOL(obd_race_waitq);
 382 EXPORT_SYMBOL(obd_race_state);
 383 EXPORT_SYMBOL(obd_debug_peer_on_timeout);
 384 EXPORT_SYMBOL(obd_dump_on_timeout);
 385 EXPORT_SYMBOL(obd_dump_on_eviction);
 386 EXPORT_SYMBOL(obd_timeout);
 387 EXPORT_SYMBOL(ldlm_timeout);
 388 EXPORT_SYMBOL(obd_health_check_timeout);
 389 EXPORT_SYMBOL(obd_max_dirty_pages);
 390 EXPORT_SYMBOL(obd_dirty_pages);
 391 EXPORT_SYMBOL(ptlrpc_put_connection_superhack);
 392
 393 EXPORT_SYMBOL(proc_lustre_root);
 394
 395 EXPORT_SYMBOL(class_register_type);
 396 EXPORT_SYMBOL(class_unregister_type);
 397 EXPORT_SYMBOL(class_get_type);
 398 EXPORT_SYMBOL(class_put_type);
 399 EXPORT_SYMBOL(class_name2dev);
 400 EXPORT_SYMBOL(class_name2obd);
 401 EXPORT_SYMBOL(class_uuid2dev);
 402 EXPORT_SYMBOL(class_uuid2obd);
 403 EXPORT_SYMBOL(class_find_client_obd);
 404 EXPORT_SYMBOL(class_find_client_notype);
 405 EXPORT_SYMBOL(class_devices_in_group);
 406 EXPORT_SYMBOL(class_conn2export);
 407 EXPORT_SYMBOL(class_exp2obd);
 408 EXPORT_SYMBOL(class_conn2obd);
 409 EXPORT_SYMBOL(class_exp2cliimp);
 410 EXPORT_SYMBOL(class_conn2cliimp);
 411 EXPORT_SYMBOL(class_disconnect);
 412 EXPORT_SYMBOL(class_num2obd);
 413
 414 /* uuid.c */
 415 EXPORT_SYMBOL(class_uuid_unparse);
 416 EXPORT_SYMBOL(lustre_uuid_to_peer);
 417
 418 EXPORT_SYMBOL(class_handle_hash);
 419 EXPORT_SYMBOL(class_handle_unhash);
 420 EXPORT_SYMBOL(class_handle_hash_back);
 421 EXPORT_SYMBOL(class_handle2object);
 422 EXPORT_SYMBOL(class_handle_free_cb);
 423
 424 /* obd_config.c */
 425 EXPORT_SYMBOL(class_incref);
 426 EXPORT_SYMBOL(class_decref);
 427 EXPORT_SYMBOL(class_get_profile);
 428 EXPORT_SYMBOL(class_del_profile);
 429 EXPORT_SYMBOL(class_del_profiles);
 430 EXPORT_SYMBOL(class_process_config);
 431 EXPORT_SYMBOL(class_process_proc_param);
 432 EXPORT_SYMBOL(class_config_parse_llog);
 433 EXPORT_SYMBOL(class_config_dump_llog);
 434 EXPORT_SYMBOL(class_attach);
 435 EXPORT_SYMBOL(class_setup);
 436 EXPORT_SYMBOL(class_cleanup);
 437 EXPORT_SYMBOL(class_detach);
 438 EXPORT_SYMBOL(class_manual_cleanup);
 439
 440 /* mea.c */
 441 EXPORT_SYMBOL(mea_name2idx);
 442 EXPORT_SYMBOL(raw_name2idx);
 443
 444 #define OBD_INIT_CHECK
 445 #ifdef OBD_INIT_CHECK
 446 int obd_init_checks(void)
 447 {
 448         __u64 u64val, div64val;
 449         char buf[64];
 450         int len, ret = 0;
 451
 452         CDEBUG(D_INFO, "LPU64=%s, LPD64=%s, LPX64=%s, LPSZ=%s, LPSSZ=%s\n",
 453                LPU64, LPD64, LPX64, LPSZ, LPSSZ);
 454
 455         CDEBUG(D_INFO, "OBD_OBJECT_EOF = "LPX64"\n", (__u64)OBD_OBJECT_EOF);
 456
 457         u64val = OBD_OBJECT_EOF;
 458         CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
 459         if (u64val != OBD_OBJECT_EOF) {
 460                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 461                        u64val, (int)sizeof(u64val));
 462                 ret = -EINVAL;
 463         }
 464         len = snprintf(buf, sizeof(buf), LPX64, u64val);
 465         if (len != 18) {
 466                 CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
 467                 ret = -EINVAL;
 468         }
 469
 470         div64val = OBD_OBJECT_EOF;
 471         CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
 472         if (u64val != OBD_OBJECT_EOF) {
 473                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 474                        u64val, (int)sizeof(u64val));
 475                 ret = -EOVERFLOW;
 476         }
 477         if (u64val >> 8 != OBD_OBJECT_EOF >> 8) {
 478                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 479                        u64val, (int)sizeof(u64val));
 480                 return -EOVERFLOW;
 481         }
 482         if (do_div(div64val, 256) != (u64val & 255)) {
 483                 CERROR("do_div("LPX64",256) != "LPU64"\n", u64val, u64val &255);
 484                 return -EOVERFLOW;
 485         }
 486         if (u64val >> 8 != div64val) {
 487                 CERROR("do_div("LPX64",256) "LPU64" != "LPU64"\n",
 488                        u64val, div64val, u64val >> 8);
 489                 return -EOVERFLOW;
 490         }
 491         len = snprintf(buf, sizeof(buf), LPX64, u64val);
 492         if (len != 18) {
 493                 CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
 494                 ret = -EINVAL;
 495         }
 496         len = snprintf(buf, sizeof(buf), LPU64, u64val);
 497         if (len != 20) {
 498                 CWARN("LPU64 wrong length! strlen(%s)=%d != 20\n", buf, len);
 499                 ret = -EINVAL;
 500         }
 501         len = snprintf(buf, sizeof(buf), LPD64, u64val);
 502         if (len != 2) {
 503                 CWARN("LPD64 wrong length! strlen(%s)=%d != 2\n", buf, len);
 504                 ret = -EINVAL;
 505         }
 506         if ((u64val & ~CFS_PAGE_MASK) >= CFS_PAGE_SIZE) {
 507                 CWARN("mask failed: u64val "LPU64" >= %lu\n", u64val,
 508                       CFS_PAGE_SIZE);
 509                 ret = -EINVAL;
 510         }
 511
 512         return ret;
 513 }
 514 #else
 515 #define obd_init_checks() do {} while(0)
 516 #endif
 517
 518 extern spinlock_t obd_types_lock;
 519 extern int class_procfs_init(void);
 520 extern int class_procfs_clean(void);
 521
 522 #ifdef __KERNEL__
 523 static int __init init_obdclass(void)
 524 #else
 525 int init_obdclass(void)
 526 #endif
 527 {
 528         int i, err;
 529 #ifdef __KERNEL__
 530         int lustre_register_fs(void);
 531
 532         printk(KERN_INFO "Lustre: OBD class driver, info@clusterfs.com\n");
 533         printk(KERN_INFO "        Lustre Version: "LUSTRE_VERSION_STRING"\n");
 534         printk(KERN_INFO "        Build Version: "BUILD_VERSION"\n");
 535
 536         for (i = CAPA_SITE_CLIENT; i < CAPA_SITE_MAX; i++)
 537                 INIT_LIST_HEAD(&capa_list[i]);
 538 #else
 539         CDEBUG(D_INFO, "Lustre: OBD class driver, info@clusterfs.com\n");
 540         CDEBUG(D_INFO, "        Lustre Version: "LUSTRE_VERSION_STRING"\n");
 541         CDEBUG(D_INFO, "        Build Version: "BUILD_VERSION"\n");
 542 #endif
 543
 544         spin_lock_init(&obd_types_lock);
 545         cfs_waitq_init(&obd_race_waitq);
 546         obd_zombie_impexp_init();
 547 #ifdef LPROCFS
 548         obd_memory = lprocfs_alloc_stats(OBD_STATS_NUM,
 549                                          LPROCFS_STATS_FLAG_PERCPU);
 550         if (obd_memory == NULL) {
 551                 CERROR("kmalloc of 'obd_memory' failed\n");
 552                 RETURN(-ENOMEM);
 553         }
 554
 555         lprocfs_counter_init(obd_memory, OBD_MEMORY_STAT,
 556                              LPROCFS_CNTR_AVGMINMAX,
 557                              "memused", "bytes");
 558         lprocfs_counter_init(obd_memory, OBD_MEMORY_PAGES_STAT,
 559                              LPROCFS_CNTR_AVGMINMAX,
 560                              "pagesused", "pages");
 561 #endif
 562         err = obd_init_checks();
 563         if (err == -EOVERFLOW)
 564                 return err;
 565
 566         class_init_uuidlist();
 567         err = class_handle_init();
 568         if (err)
 569                 return err;
 570
 571         spin_lock_init(&obd_dev_lock);
 572         INIT_LIST_HEAD(&obd_types);
 573
 574         err = cfs_psdev_register(&obd_psdev);
 575         if (err) {
 576                 CERROR("cannot register %d err %d\n", OBD_MINOR, err);
 577                 return err;
 578         }
 579
 580         /* This struct is already zerod for us (static global) */
 581         for (i = 0; i < class_devno_max(); i++)
 582                 obd_devs[i] = NULL;
 583
 584         /* Default the dirty page cache cap to 1/2 of system memory */
 585         obd_max_dirty_pages = num_physpages / 2;
 586
 587         err = obd_init_caches();
 588         if (err)
 589                 return err;
 590 #ifdef __KERNEL__
 591         err = lu_global_init();
 592         if (err)
 593                 return err;
 594         err = class_procfs_init();
 595         if (err)
 596                 return err;
 597         err = lustre_register_fs();
 598 #endif
 599
 600         return err;
 601 }
 602
 603 /* liblustre doesn't call cleanup_obdclass, apparently.  we carry on in this
 604  * ifdef to the end of the file to cover module and versioning goo.*/
 605 #ifdef __KERNEL__
 606 static void cleanup_obdclass(void)
 607 {
 608         int i;
 609         int lustre_unregister_fs(void);
 610         __u64 memory_leaked, pages_leaked;
 611         __u64 memory_max, pages_max;
 612         ENTRY;
 613
 614         lustre_unregister_fs();
 615
 616         cfs_psdev_deregister(&obd_psdev);
 617         for (i = 0; i < class_devno_max(); i++) {
 618                 struct obd_device *obd = class_num2obd(i);
 619                 if (obd && obd->obd_set_up &&
 620                     OBT(obd) && OBP(obd, detach)) {
 621                         /* XXX should this call generic detach otherwise? */
 622                         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
 623                         OBP(obd, detach)(obd);
 624                 }
 625         }
 626         lu_global_fini();
 627
 628         obd_cleanup_caches();
 629         obd_sysctl_clean();
 630
 631         class_procfs_clean();
 632
 633         class_handle_cleanup();
 634         class_exit_uuidlist();
 635
 636         memory_leaked = obd_memory_sum();
 637         pages_leaked = obd_pages_sum();
 638
 639         memory_max = obd_memory_max();
 640         pages_max = obd_pages_max();
 641
 642         lprocfs_free_stats(&obd_memory);
 643         if (memory_leaked > 0) {
 644                 CWARN("Memory leaks detected (max "LPU64", leaked "LPD64")\n",
 645                       memory_max, memory_leaked);
 646         }
 647         if (pages_leaked > 0) {
 648                 CWARN("Page leaks detected (max "LPU64", leaked "LPU64")\n",
 649                       pages_max, pages_leaked);
 650         }
 651
 652         EXIT;
 653 }
 654
 655 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
 656 MODULE_DESCRIPTION("Lustre Class Driver Build Version: " BUILD_VERSION);
 657 MODULE_LICENSE("GPL");
 658
 659 cfs_module(obdclass, LUSTRE_VERSION_STRING, init_obdclass, cleanup_obdclass);
 660 #endif