fs/orangefs/orangefs-sysfs.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Documentation/ABI/stable/sysfs-fs-orangefs:
   4  *
   5  * What:                /sys/fs/orangefs/perf_counter_reset
   6  * Date:                June 2015
   7  * Contact:             Mike Marshall <hubcap@omnibond.com>
   8  * Description:
   9  *                      echo a 0 or a 1 into perf_counter_reset to
  10  *                      reset all the counters in
  11  *                      /sys/fs/orangefs/perf_counters
  12  *                      except ones with PINT_PERF_PRESERVE set.
  13  *
  14  *
  15  * What:                /sys/fs/orangefs/perf_counters/...
  16  * Date:                Jun 2015
  17  * Contact:             Mike Marshall <hubcap@omnibond.com>
  18  * Description:
  19  *                      Counters and settings for various caches.
  20  *                      Read only.
  21  *
  22  *
  23  * What:                /sys/fs/orangefs/perf_time_interval_secs
  24  * Date:                Jun 2015
  25  * Contact:             Mike Marshall <hubcap@omnibond.com>
  26  * Description:
  27  *                      Length of perf counter intervals in
  28  *                      seconds.
  29  *
  30  *
  31  * What:                /sys/fs/orangefs/perf_history_size
  32  * Date:                Jun 2015
  33  * Contact:             Mike Marshall <hubcap@omnibond.com>
  34  * Description:
  35  *                      The perf_counters cache statistics have N, or
  36  *                      perf_history_size, samples. The default is
  37  *                      one.
  38  *
  39  *                      Every perf_time_interval_secs the (first)
  40  *                      samples are reset.
  41  *
  42  *                      If N is greater than one, the "current" set
  43  *                      of samples is reset, and the samples from the
  44  *                      other N-1 intervals remain available.
  45  *
  46  *
  47  * What:                /sys/fs/orangefs/op_timeout_secs
  48  * Date:                Jun 2015
  49  * Contact:             Mike Marshall <hubcap@omnibond.com>
  50  * Description:
  51  *                      Service operation timeout in seconds.
  52  *
  53  *
  54  * What:                /sys/fs/orangefs/slot_timeout_secs
  55  * Date:                Jun 2015
  56  * Contact:             Mike Marshall <hubcap@omnibond.com>
  57  * Description:
  58  *                      "Slot" timeout in seconds. A "slot"
  59  *                      is an indexed buffer in the shared
  60  *                      memory segment used for communication
  61  *                      between the kernel module and userspace.
  62  *                      Slots are requested and waited for,
  63  *                      the wait times out after slot_timeout_secs.
  64  *
  65  * What:                /sys/fs/orangefs/cache_timeout_msecs
  66  * Date:                Mar 2018
  67  * Contact:             Martin Brandenburg <martin@omnibond.com>
  68  * Description:
  69  *                      Time in milliseconds between which
  70  *                      orangefs_revalidate_mapping will invalidate the page
  71  *                      cache.
  72  *
  73  * What:                /sys/fs/orangefs/dcache_timeout_msecs
  74  * Date:                Jul 2016
  75  * Contact:             Martin Brandenburg <martin@omnibond.com>
  76  * Description:
  77  *                      Time lookup is valid in milliseconds.
  78  *
  79  * What:                /sys/fs/orangefs/getattr_timeout_msecs
  80  * Date:                Jul 2016
  81  * Contact:             Martin Brandenburg <martin@omnibond.com>
  82  * Description:
  83  *                      Time getattr is valid in milliseconds.
  84  *
  85  * What:                /sys/fs/orangefs/readahead_count
  86  * Date:                Aug 2016
  87  * Contact:             Martin Brandenburg <martin@omnibond.com>
  88  * Description:
  89  *                      Readahead cache buffer count.
  90  *
  91  * What:                /sys/fs/orangefs/readahead_size
  92  * Date:                Aug 2016
  93  * Contact:             Martin Brandenburg <martin@omnibond.com>
  94  * Description:
  95  *                      Readahead cache buffer size.
  96  *
  97  * What:                /sys/fs/orangefs/readahead_count_size
  98  * Date:                Aug 2016
  99  * Contact:             Martin Brandenburg <martin@omnibond.com>
 100  * Description:
 101  *                      Readahead cache buffer count and size.
 102  *
 103  * What:                /sys/fs/orangefs/readahead_readcnt
 104  * Date:                Jan 2017
 105  * Contact:             Martin Brandenburg <martin@omnibond.com>
 106  * Description:
 107  *                      Number of buffers (in multiples of readahead_size)
 108  *                      which can be read ahead for a single file at once.
 109  *
 110  * What:                /sys/fs/orangefs/acache/...
 111  * Date:                Jun 2015
 112  * Contact:             Martin Brandenburg <martin@omnibond.com>
 113  * Description:
 114  *                      Attribute cache configurable settings.
 115  *
 116  *
 117  * What:                /sys/fs/orangefs/ncache/...
 118  * Date:                Jun 2015
 119  * Contact:             Mike Marshall <hubcap@omnibond.com>
 120  * Description:
 121  *                      Name cache configurable settings.
 122  *
 123  *
 124  * What:                /sys/fs/orangefs/capcache/...
 125  * Date:                Jun 2015
 126  * Contact:             Mike Marshall <hubcap@omnibond.com>
 127  * Description:
 128  *                      Capability cache configurable settings.
 129  *
 130  *
 131  * What:                /sys/fs/orangefs/ccache/...
 132  * Date:                Jun 2015
 133  * Contact:             Mike Marshall <hubcap@omnibond.com>
 134  * Description:
 135  *                      Credential cache configurable settings.
 136  *
 137  */
 138
 139 #include <linux/fs.h>
 140 #include <linux/kobject.h>
 141 #include <linux/string.h>
 142 #include <linux/sysfs.h>
 143 #include <linux/module.h>
 144 #include <linux/init.h>
 145
 146 #include "protocol.h"
 147 #include "orangefs-kernel.h"
 148 #include "orangefs-sysfs.h"
 149
 150 #define ORANGEFS_KOBJ_ID "orangefs"
 151 #define ACACHE_KOBJ_ID "acache"
 152 #define CAPCACHE_KOBJ_ID "capcache"
 153 #define CCACHE_KOBJ_ID "ccache"
 154 #define NCACHE_KOBJ_ID "ncache"
 155 #define PC_KOBJ_ID "pc"
 156 #define STATS_KOBJ_ID "stats"
 157
 158 /*
 159  * Every item calls orangefs_attr_show and orangefs_attr_store through
 160  * orangefs_sysfs_ops. They look at the orangefs_attributes further below to
 161  * call one of sysfs_int_show, sysfs_int_store, sysfs_service_op_show, or
 162  * sysfs_service_op_store.
 163  */
 164
 165 struct orangefs_attribute {
 166         struct attribute attr;
 167         ssize_t (*show)(struct kobject *kobj,
 168                         struct orangefs_attribute *attr,
 169                         char *buf);
 170         ssize_t (*store)(struct kobject *kobj,
 171                          struct orangefs_attribute *attr,
 172                          const char *buf,
 173                          size_t count);
 174 };
 175
 176 static ssize_t orangefs_attr_show(struct kobject *kobj,
 177                                   struct attribute *attr,
 178                                   char *buf)
 179 {
 180         struct orangefs_attribute *attribute;
 181
 182         attribute = container_of(attr, struct orangefs_attribute, attr);
 183         if (!attribute->show)
 184                 return -EIO;
 185         return attribute->show(kobj, attribute, buf);
 186 }
 187
 188 static ssize_t orangefs_attr_store(struct kobject *kobj,
 189                                    struct attribute *attr,
 190                                    const char *buf,
 191                                    size_t len)
 192 {
 193         struct orangefs_attribute *attribute;
 194
 195         if (!strcmp(kobj->name, PC_KOBJ_ID) ||
 196             !strcmp(kobj->name, STATS_KOBJ_ID))
 197                 return -EPERM;
 198
 199         attribute = container_of(attr, struct orangefs_attribute, attr);
 200         if (!attribute->store)
 201                 return -EIO;
 202         return attribute->store(kobj, attribute, buf, len);
 203 }
 204
 205 static const struct sysfs_ops orangefs_sysfs_ops = {
 206         .show = orangefs_attr_show,
 207         .store = orangefs_attr_store,
 208 };
 209
 210 static ssize_t sysfs_int_show(struct kobject *kobj,
 211     struct orangefs_attribute *attr, char *buf)
 212 {
 213         int rc = -EIO;
 214
 215         gossip_debug(GOSSIP_SYSFS_DEBUG, "sysfs_int_show: id:%s:\n",
 216             kobj->name);
 217
 218         if (!strcmp(kobj->name, ORANGEFS_KOBJ_ID)) {
 219                 if (!strcmp(attr->attr.name, "op_timeout_secs")) {
 220                         rc = scnprintf(buf,
 221                                        PAGE_SIZE,
 222                                        "%d\n",
 223                                        op_timeout_secs);
 224                         goto out;
 225                 } else if (!strcmp(attr->attr.name,
 226                                    "slot_timeout_secs")) {
 227                         rc = scnprintf(buf,
 228                                        PAGE_SIZE,
 229                                        "%d\n",
 230                                        slot_timeout_secs);
 231                         goto out;
 232                 } else if (!strcmp(attr->attr.name,
 233                                    "cache_timeout_msecs")) {
 234                         rc = scnprintf(buf,
 235                                        PAGE_SIZE,
 236                                        "%d\n",
 237                                        orangefs_cache_timeout_msecs);
 238                         goto out;
 239                 } else if (!strcmp(attr->attr.name,
 240                                    "dcache_timeout_msecs")) {
 241                         rc = scnprintf(buf,
 242                                        PAGE_SIZE,
 243                                        "%d\n",
 244                                        orangefs_dcache_timeout_msecs);
 245                         goto out;
 246                 } else if (!strcmp(attr->attr.name,
 247                                    "getattr_timeout_msecs")) {
 248                         rc = scnprintf(buf,
 249                                        PAGE_SIZE,
 250                                        "%d\n",
 251                                        orangefs_getattr_timeout_msecs);
 252                         goto out;
 253                 } else {
 254                         goto out;
 255                 }
 256
 257         } else if (!strcmp(kobj->name, STATS_KOBJ_ID)) {
 258                 if (!strcmp(attr->attr.name, "reads")) {
 259                         rc = scnprintf(buf,
 260                                        PAGE_SIZE,
 261                                        "%lu\n",
 262                                        orangefs_stats.reads);
 263                         goto out;
 264                 } else if (!strcmp(attr->attr.name, "writes")) {
 265                         rc = scnprintf(buf,
 266                                        PAGE_SIZE,
 267                                        "%lu\n",
 268                                        orangefs_stats.writes);
 269                         goto out;
 270                 } else {
 271                         goto out;
 272                 }
 273         }
 274
 275 out:
 276
 277         return rc;
 278 }
 279
 280 static ssize_t sysfs_int_store(struct kobject *kobj,
 281     struct orangefs_attribute *attr, const char *buf, size_t count)
 282 {
 283         int rc = 0;
 284
 285         gossip_debug(GOSSIP_SYSFS_DEBUG,
 286                      "sysfs_int_store: start attr->attr.name:%s: buf:%s:\n",
 287                      attr->attr.name, buf);
 288
 289         if (!strcmp(attr->attr.name, "op_timeout_secs")) {
 290                 rc = kstrtoint(buf, 0, &op_timeout_secs);
 291                 goto out;
 292         } else if (!strcmp(attr->attr.name, "slot_timeout_secs")) {
 293                 rc = kstrtoint(buf, 0, &slot_timeout_secs);
 294                 goto out;
 295         } else if (!strcmp(attr->attr.name, "cache_timeout_msecs")) {
 296                 rc = kstrtoint(buf, 0, &orangefs_cache_timeout_msecs);
 297                 goto out;
 298         } else if (!strcmp(attr->attr.name, "dcache_timeout_msecs")) {
 299                 rc = kstrtoint(buf, 0, &orangefs_dcache_timeout_msecs);
 300                 goto out;
 301         } else if (!strcmp(attr->attr.name, "getattr_timeout_msecs")) {
 302                 rc = kstrtoint(buf, 0, &orangefs_getattr_timeout_msecs);
 303                 goto out;
 304         } else {
 305                 goto out;
 306         }
 307
 308 out:
 309         if (rc)
 310                 rc = -EINVAL;
 311         else
 312                 rc = count;
 313
 314         return rc;
 315 }
 316
 317 /*
 318  * obtain attribute values from userspace with a service operation.
 319  */
 320 static ssize_t sysfs_service_op_show(struct kobject *kobj,
 321     struct orangefs_attribute *attr, char *buf)
 322 {
 323         struct orangefs_kernel_op_s *new_op = NULL;
 324         int rc = 0;
 325         char *ser_op_type = NULL;
 326         __u32 op_alloc_type;
 327
 328         gossip_debug(GOSSIP_SYSFS_DEBUG,
 329                      "sysfs_service_op_show: id:%s:\n",
 330                      kobj->name);
 331
 332         if (strcmp(kobj->name, PC_KOBJ_ID))
 333                 op_alloc_type = ORANGEFS_VFS_OP_PARAM;
 334         else
 335                 op_alloc_type = ORANGEFS_VFS_OP_PERF_COUNT;
 336
 337         new_op = op_alloc(op_alloc_type);
 338         if (!new_op)
 339                 return -ENOMEM;
 340
 341         /* Can't do a service_operation if the client is not running... */
 342         rc = is_daemon_in_service();
 343         if (rc) {
 344                 pr_info_ratelimited("%s: Client not running :%d:\n",
 345                         __func__,
 346                         is_daemon_in_service());
 347                 goto out;
 348         }
 349
 350         if (strcmp(kobj->name, PC_KOBJ_ID))
 351                 new_op->upcall.req.param.type = ORANGEFS_PARAM_REQUEST_GET;
 352
 353         if (!strcmp(kobj->name, ORANGEFS_KOBJ_ID)) {
 354                 /* Drop unsupported requests first. */
 355                 if (!(orangefs_features & ORANGEFS_FEATURE_READAHEAD) &&
 356                     (!strcmp(attr->attr.name, "readahead_count") ||
 357                     !strcmp(attr->attr.name, "readahead_size") ||
 358                     !strcmp(attr->attr.name, "readahead_count_size") ||
 359                     !strcmp(attr->attr.name, "readahead_readcnt"))) {
 360                         rc = -EINVAL;
 361                         goto out;
 362                 }
 363
 364                 if (!strcmp(attr->attr.name, "perf_history_size"))
 365                         new_op->upcall.req.param.op =
 366                                 ORANGEFS_PARAM_REQUEST_OP_PERF_HISTORY_SIZE;
 367                 else if (!strcmp(attr->attr.name,
 368                                  "perf_time_interval_secs"))
 369                         new_op->upcall.req.param.op =
 370                                 ORANGEFS_PARAM_REQUEST_OP_PERF_TIME_INTERVAL_SECS;
 371                 else if (!strcmp(attr->attr.name,
 372                                  "perf_counter_reset"))
 373                         new_op->upcall.req.param.op =
 374                                 ORANGEFS_PARAM_REQUEST_OP_PERF_RESET;
 375
 376                 else if (!strcmp(attr->attr.name,
 377                                  "readahead_count"))
 378                         new_op->upcall.req.param.op =
 379                                 ORANGEFS_PARAM_REQUEST_OP_READAHEAD_COUNT;
 380
 381                 else if (!strcmp(attr->attr.name,
 382                                  "readahead_size"))
 383                         new_op->upcall.req.param.op =
 384                                 ORANGEFS_PARAM_REQUEST_OP_READAHEAD_SIZE;
 385
 386                 else if (!strcmp(attr->attr.name,
 387                                  "readahead_count_size"))
 388                         new_op->upcall.req.param.op =
 389                                 ORANGEFS_PARAM_REQUEST_OP_READAHEAD_COUNT_SIZE;
 390
 391                 else if (!strcmp(attr->attr.name,
 392                                  "readahead_readcnt"))
 393                         new_op->upcall.req.param.op =
 394                                 ORANGEFS_PARAM_REQUEST_OP_READAHEAD_READCNT;
 395         } else if (!strcmp(kobj->name, ACACHE_KOBJ_ID)) {
 396                 if (!strcmp(attr->attr.name, "timeout_msecs"))
 397                         new_op->upcall.req.param.op =
 398                                 ORANGEFS_PARAM_REQUEST_OP_ACACHE_TIMEOUT_MSECS;
 399
 400                 if (!strcmp(attr->attr.name, "hard_limit"))
 401                         new_op->upcall.req.param.op =
 402                                 ORANGEFS_PARAM_REQUEST_OP_ACACHE_HARD_LIMIT;
 403
 404                 if (!strcmp(attr->attr.name, "soft_limit"))
 405                         new_op->upcall.req.param.op =
 406                                 ORANGEFS_PARAM_REQUEST_OP_ACACHE_SOFT_LIMIT;
 407
 408                 if (!strcmp(attr->attr.name, "reclaim_percentage"))
 409                         new_op->upcall.req.param.op =
 410                           ORANGEFS_PARAM_REQUEST_OP_ACACHE_RECLAIM_PERCENTAGE;
 411
 412         } else if (!strcmp(kobj->name, CAPCACHE_KOBJ_ID)) {
 413                 if (!strcmp(attr->attr.name, "timeout_secs"))
 414                         new_op->upcall.req.param.op =
 415                                 ORANGEFS_PARAM_REQUEST_OP_CAPCACHE_TIMEOUT_SECS;
 416
 417                 if (!strcmp(attr->attr.name, "hard_limit"))
 418                         new_op->upcall.req.param.op =
 419                                 ORANGEFS_PARAM_REQUEST_OP_CAPCACHE_HARD_LIMIT;
 420
 421                 if (!strcmp(attr->attr.name, "soft_limit"))
 422                         new_op->upcall.req.param.op =
 423                                 ORANGEFS_PARAM_REQUEST_OP_CAPCACHE_SOFT_LIMIT;
 424
 425                 if (!strcmp(attr->attr.name, "reclaim_percentage"))
 426                         new_op->upcall.req.param.op =
 427                           ORANGEFS_PARAM_REQUEST_OP_CAPCACHE_RECLAIM_PERCENTAGE;
 428
 429         } else if (!strcmp(kobj->name, CCACHE_KOBJ_ID)) {
 430                 if (!strcmp(attr->attr.name, "timeout_secs"))
 431                         new_op->upcall.req.param.op =
 432                                 ORANGEFS_PARAM_REQUEST_OP_CCACHE_TIMEOUT_SECS;
 433
 434                 if (!strcmp(attr->attr.name, "hard_limit"))
 435                         new_op->upcall.req.param.op =
 436                                 ORANGEFS_PARAM_REQUEST_OP_CCACHE_HARD_LIMIT;
 437
 438                 if (!strcmp(attr->attr.name, "soft_limit"))
 439                         new_op->upcall.req.param.op =
 440                                 ORANGEFS_PARAM_REQUEST_OP_CCACHE_SOFT_LIMIT;
 441
 442                 if (!strcmp(attr->attr.name, "reclaim_percentage"))
 443                         new_op->upcall.req.param.op =
 444                           ORANGEFS_PARAM_REQUEST_OP_CCACHE_RECLAIM_PERCENTAGE;
 445
 446         } else if (!strcmp(kobj->name, NCACHE_KOBJ_ID)) {
 447                 if (!strcmp(attr->attr.name, "timeout_msecs"))
 448                         new_op->upcall.req.param.op =
 449                                 ORANGEFS_PARAM_REQUEST_OP_NCACHE_TIMEOUT_MSECS;
 450
 451                 if (!strcmp(attr->attr.name, "hard_limit"))
 452                         new_op->upcall.req.param.op =
 453                                 ORANGEFS_PARAM_REQUEST_OP_NCACHE_HARD_LIMIT;
 454
 455                 if (!strcmp(attr->attr.name, "soft_limit"))
 456                         new_op->upcall.req.param.op =
 457                                 ORANGEFS_PARAM_REQUEST_OP_NCACHE_SOFT_LIMIT;
 458
 459                 if (!strcmp(attr->attr.name, "reclaim_percentage"))
 460                         new_op->upcall.req.param.op =
 461                           ORANGEFS_PARAM_REQUEST_OP_NCACHE_RECLAIM_PERCENTAGE;
 462
 463         } else if (!strcmp(kobj->name, PC_KOBJ_ID)) {
 464                 if (!strcmp(attr->attr.name, ACACHE_KOBJ_ID))
 465                         new_op->upcall.req.perf_count.type =
 466                                 ORANGEFS_PERF_COUNT_REQUEST_ACACHE;
 467
 468                 if (!strcmp(attr->attr.name, CAPCACHE_KOBJ_ID))
 469                         new_op->upcall.req.perf_count.type =
 470                                 ORANGEFS_PERF_COUNT_REQUEST_CAPCACHE;
 471
 472                 if (!strcmp(attr->attr.name, NCACHE_KOBJ_ID))
 473                         new_op->upcall.req.perf_count.type =
 474                                 ORANGEFS_PERF_COUNT_REQUEST_NCACHE;
 475
 476         } else {
 477                 gossip_err("sysfs_service_op_show: unknown kobj_id:%s:\n",
 478                            kobj->name);
 479                 rc = -EINVAL;
 480                 goto out;
 481         }
 482
 483
 484         if (strcmp(kobj->name, PC_KOBJ_ID))
 485                 ser_op_type = "orangefs_param";
 486         else
 487                 ser_op_type = "orangefs_perf_count";
 488
 489         /*
 490          * The service_operation will return an errno return code on
 491          * error, and zero on success.
 492          */
 493         rc = service_operation(new_op, ser_op_type, ORANGEFS_OP_INTERRUPTIBLE);
 494
 495 out:
 496         if (!rc) {
 497                 if (strcmp(kobj->name, PC_KOBJ_ID)) {
 498                         if (new_op->upcall.req.param.op ==
 499                             ORANGEFS_PARAM_REQUEST_OP_READAHEAD_COUNT_SIZE) {
 500                                 rc = scnprintf(buf, PAGE_SIZE, "%d %d\n",
 501                                     (int)new_op->downcall.resp.param.u.
 502                                     value32[0],
 503                                     (int)new_op->downcall.resp.param.u.
 504                                     value32[1]);
 505                         } else {
 506                                 rc = scnprintf(buf, PAGE_SIZE, "%d\n",
 507                                     (int)new_op->downcall.resp.param.u.value64);
 508                         }
 509                 } else {
 510                         rc = scnprintf(
 511                                 buf,
 512                                 PAGE_SIZE,
 513                                 "%s",
 514                                 new_op->downcall.resp.perf_count.buffer);
 515                 }
 516         }
 517
 518         op_release(new_op);
 519
 520         return rc;
 521
 522 }
 523
 524 /*
 525  * pass attribute values back to userspace with a service operation.
 526  *
 527  * We have to do a memory allocation, an sscanf and a service operation.
 528  * And we have to evaluate what the user entered, to make sure the
 529  * value is within the range supported by the attribute. So, there's
 530  * a lot of return code checking and mapping going on here.
 531  *
 532  * We want to return 1 if we think everything went OK, and
 533  * EINVAL if not.
 534  */
 535 static ssize_t sysfs_service_op_store(struct kobject *kobj,
 536     struct orangefs_attribute *attr, const char *buf, size_t count)
 537 {
 538         struct orangefs_kernel_op_s *new_op = NULL;
 539         int val = 0;
 540         int rc = 0;
 541
 542         gossip_debug(GOSSIP_SYSFS_DEBUG,
 543                      "sysfs_service_op_store: id:%s:\n",
 544                      kobj->name);
 545
 546         new_op = op_alloc(ORANGEFS_VFS_OP_PARAM);
 547         if (!new_op)
 548                 return -EINVAL; /* sic */
 549
 550         /* Can't do a service_operation if the client is not running... */
 551         rc = is_daemon_in_service();
 552         if (rc) {
 553                 pr_info("%s: Client not running :%d:\n",
 554                         __func__,
 555                         is_daemon_in_service());
 556                 goto out;
 557         }
 558
 559         /*
 560          * The value we want to send back to userspace is in buf, unless this
 561          * there are two parameters, which is specially handled below.
 562          */
 563         if (strcmp(kobj->name, ORANGEFS_KOBJ_ID) ||
 564             strcmp(attr->attr.name, "readahead_count_size")) {
 565                 rc = kstrtoint(buf, 0, &val);
 566                 if (rc)
 567                         goto out;
 568         }
 569
 570         new_op->upcall.req.param.type = ORANGEFS_PARAM_REQUEST_SET;
 571
 572         if (!strcmp(kobj->name, ORANGEFS_KOBJ_ID)) {
 573                 /* Drop unsupported requests first. */
 574                 if (!(orangefs_features & ORANGEFS_FEATURE_READAHEAD) &&
 575                     (!strcmp(attr->attr.name, "readahead_count") ||
 576                     !strcmp(attr->attr.name, "readahead_size") ||
 577                     !strcmp(attr->attr.name, "readahead_count_size") ||
 578                     !strcmp(attr->attr.name, "readahead_readcnt"))) {
 579                         rc = -EINVAL;
 580                         goto out;
 581                 }
 582
 583                 if (!strcmp(attr->attr.name, "perf_history_size")) {
 584                         if (val > 0) {
 585                                 new_op->upcall.req.param.op =
 586                                   ORANGEFS_PARAM_REQUEST_OP_PERF_HISTORY_SIZE;
 587                         } else {
 588                                 rc = 0;
 589                                 goto out;
 590                         }
 591                 } else if (!strcmp(attr->attr.name,
 592                                    "perf_time_interval_secs")) {
 593                         if (val > 0) {
 594                                 new_op->upcall.req.param.op =
 595                                 ORANGEFS_PARAM_REQUEST_OP_PERF_TIME_INTERVAL_SECS;
 596                         } else {
 597                                 rc = 0;
 598                                 goto out;
 599                         }
 600                 } else if (!strcmp(attr->attr.name,
 601                                    "perf_counter_reset")) {
 602                         if ((val == 0) || (val == 1)) {
 603                                 new_op->upcall.req.param.op =
 604                                         ORANGEFS_PARAM_REQUEST_OP_PERF_RESET;
 605                         } else {
 606                                 rc = 0;
 607                                 goto out;
 608                         }
 609                 } else if (!strcmp(attr->attr.name,
 610                                    "readahead_count")) {
 611                         if ((val >= 0)) {
 612                                 new_op->upcall.req.param.op =
 613                                 ORANGEFS_PARAM_REQUEST_OP_READAHEAD_COUNT;
 614                         } else {
 615                                 rc = 0;
 616                                 goto out;
 617                         }
 618                 } else if (!strcmp(attr->attr.name,
 619                                    "readahead_size")) {
 620                         if ((val >= 0)) {
 621                                 new_op->upcall.req.param.op =
 622                                 ORANGEFS_PARAM_REQUEST_OP_READAHEAD_SIZE;
 623                         } else {
 624                                 rc = 0;
 625                                 goto out;
 626                         }
 627                 } else if (!strcmp(attr->attr.name,
 628                                    "readahead_count_size")) {
 629                         int val1, val2;
 630                         rc = sscanf(buf, "%d %d", &val1, &val2);
 631                         if (rc < 2) {
 632                                 rc = 0;
 633                                 goto out;
 634                         }
 635                         if ((val1 >= 0) && (val2 >= 0)) {
 636                                 new_op->upcall.req.param.op =
 637                                 ORANGEFS_PARAM_REQUEST_OP_READAHEAD_COUNT_SIZE;
 638                         } else {
 639                                 rc = 0;
 640                                 goto out;
 641                         }
 642                         new_op->upcall.req.param.u.value32[0] = val1;
 643                         new_op->upcall.req.param.u.value32[1] = val2;
 644                         goto value_set;
 645                 } else if (!strcmp(attr->attr.name,
 646                                    "readahead_readcnt")) {
 647                         if ((val >= 0)) {
 648                                 new_op->upcall.req.param.op =
 649                                 ORANGEFS_PARAM_REQUEST_OP_READAHEAD_READCNT;
 650                         } else {
 651                                 rc = 0;
 652                                 goto out;
 653                         }
 654                 }
 655
 656         } else if (!strcmp(kobj->name, ACACHE_KOBJ_ID)) {
 657                 if (!strcmp(attr->attr.name, "hard_limit")) {
 658                         if (val > -1) {
 659                                 new_op->upcall.req.param.op =
 660                                   ORANGEFS_PARAM_REQUEST_OP_ACACHE_HARD_LIMIT;
 661                         } else {
 662                                 rc = 0;
 663                                 goto out;
 664                         }
 665                 } else if (!strcmp(attr->attr.name, "soft_limit")) {
 666                         if (val > -1) {
 667                                 new_op->upcall.req.param.op =
 668                                   ORANGEFS_PARAM_REQUEST_OP_ACACHE_SOFT_LIMIT;
 669                         } else {
 670                                 rc = 0;
 671                                 goto out;
 672                         }
 673                 } else if (!strcmp(attr->attr.name,
 674                                    "reclaim_percentage")) {
 675                         if ((val > -1) && (val < 101)) {
 676                                 new_op->upcall.req.param.op =
 677                                   ORANGEFS_PARAM_REQUEST_OP_ACACHE_RECLAIM_PERCENTAGE;
 678                         } else {
 679                                 rc = 0;
 680                                 goto out;
 681                         }
 682                 } else if (!strcmp(attr->attr.name, "timeout_msecs")) {
 683                         if (val > -1) {
 684                                 new_op->upcall.req.param.op =
 685                                   ORANGEFS_PARAM_REQUEST_OP_ACACHE_TIMEOUT_MSECS;
 686                         } else {
 687                                 rc = 0;
 688                                 goto out;
 689                         }
 690                 }
 691
 692         } else if (!strcmp(kobj->name, CAPCACHE_KOBJ_ID)) {
 693                 if (!strcmp(attr->attr.name, "hard_limit")) {
 694                         if (val > -1) {
 695                                 new_op->upcall.req.param.op =
 696                                   ORANGEFS_PARAM_REQUEST_OP_CAPCACHE_HARD_LIMIT;
 697                         } else {
 698                                 rc = 0;
 699                                 goto out;
 700                         }
 701                 } else if (!strcmp(attr->attr.name, "soft_limit")) {
 702                         if (val > -1) {
 703                                 new_op->upcall.req.param.op =
 704                                   ORANGEFS_PARAM_REQUEST_OP_CAPCACHE_SOFT_LIMIT;
 705                         } else {
 706                                 rc = 0;
 707                                 goto out;
 708                         }
 709                 } else if (!strcmp(attr->attr.name,
 710                                    "reclaim_percentage")) {
 711                         if ((val > -1) && (val < 101)) {
 712                                 new_op->upcall.req.param.op =
 713                                   ORANGEFS_PARAM_REQUEST_OP_CAPCACHE_RECLAIM_PERCENTAGE;
 714                         } else {
 715                                 rc = 0;
 716                                 goto out;
 717                         }
 718                 } else if (!strcmp(attr->attr.name, "timeout_secs")) {
 719                         if (val > -1) {
 720                                 new_op->upcall.req.param.op =
 721                                   ORANGEFS_PARAM_REQUEST_OP_CAPCACHE_TIMEOUT_SECS;
 722                         } else {
 723                                 rc = 0;
 724                                 goto out;
 725                         }
 726                 }
 727
 728         } else if (!strcmp(kobj->name, CCACHE_KOBJ_ID)) {
 729                 if (!strcmp(attr->attr.name, "hard_limit")) {
 730                         if (val > -1) {
 731                                 new_op->upcall.req.param.op =
 732                                   ORANGEFS_PARAM_REQUEST_OP_CCACHE_HARD_LIMIT;
 733                         } else {
 734                                 rc = 0;
 735                                 goto out;
 736                         }
 737                 } else if (!strcmp(attr->attr.name, "soft_limit")) {
 738                         if (val > -1) {
 739                                 new_op->upcall.req.param.op =
 740                                   ORANGEFS_PARAM_REQUEST_OP_CCACHE_SOFT_LIMIT;
 741                         } else {
 742                                 rc = 0;
 743                                 goto out;
 744                         }
 745                 } else if (!strcmp(attr->attr.name,
 746                                    "reclaim_percentage")) {
 747                         if ((val > -1) && (val < 101)) {
 748                                 new_op->upcall.req.param.op =
 749                                   ORANGEFS_PARAM_REQUEST_OP_CCACHE_RECLAIM_PERCENTAGE;
 750                         } else {
 751                                 rc = 0;
 752                                 goto out;
 753                         }
 754                 } else if (!strcmp(attr->attr.name, "timeout_secs")) {
 755                         if (val > -1) {
 756                                 new_op->upcall.req.param.op =
 757                                   ORANGEFS_PARAM_REQUEST_OP_CCACHE_TIMEOUT_SECS;
 758                         } else {
 759                                 rc = 0;
 760                                 goto out;
 761                         }
 762                 }
 763
 764         } else if (!strcmp(kobj->name, NCACHE_KOBJ_ID)) {
 765                 if (!strcmp(attr->attr.name, "hard_limit")) {
 766                         if (val > -1) {
 767                                 new_op->upcall.req.param.op =
 768                                   ORANGEFS_PARAM_REQUEST_OP_NCACHE_HARD_LIMIT;
 769                         } else {
 770                                 rc = 0;
 771                                 goto out;
 772                         }
 773                 } else if (!strcmp(attr->attr.name, "soft_limit")) {
 774                         if (val > -1) {
 775                                 new_op->upcall.req.param.op =
 776                                   ORANGEFS_PARAM_REQUEST_OP_NCACHE_SOFT_LIMIT;
 777                         } else {
 778                                 rc = 0;
 779                                 goto out;
 780                         }
 781                 } else if (!strcmp(attr->attr.name,
 782                                    "reclaim_percentage")) {
 783                         if ((val > -1) && (val < 101)) {
 784                                 new_op->upcall.req.param.op =
 785                                         ORANGEFS_PARAM_REQUEST_OP_NCACHE_RECLAIM_PERCENTAGE;
 786                         } else {
 787                                 rc = 0;
 788                                 goto out;
 789                         }
 790                 } else if (!strcmp(attr->attr.name, "timeout_msecs")) {
 791                         if (val > -1) {
 792                                 new_op->upcall.req.param.op =
 793                                   ORANGEFS_PARAM_REQUEST_OP_NCACHE_TIMEOUT_MSECS;
 794                         } else {
 795                                 rc = 0;
 796                                 goto out;
 797                         }
 798                 }
 799
 800         } else {
 801                 gossip_err("sysfs_service_op_store: unknown kobj_id:%s:\n",
 802                            kobj->name);
 803                 rc = -EINVAL;
 804                 goto out;
 805         }
 806
 807         new_op->upcall.req.param.u.value64 = val;
 808 value_set:
 809
 810         /*
 811          * The service_operation will return a errno return code on
 812          * error, and zero on success.
 813          */
 814         rc = service_operation(new_op, "orangefs_param", ORANGEFS_OP_INTERRUPTIBLE);
 815
 816         if (rc < 0) {
 817                 gossip_err("sysfs_service_op_store: service op returned:%d:\n",
 818                         rc);
 819                 rc = 0;
 820         } else {
 821                 rc = count;
 822         }
 823
 824 out:
 825         op_release(new_op);
 826
 827         if (rc == -ENOMEM || rc == 0)
 828                 rc = -EINVAL;
 829
 830         return rc;
 831 }
 832
 833 static struct orangefs_attribute op_timeout_secs_attribute =
 834         __ATTR(op_timeout_secs, 0664, sysfs_int_show, sysfs_int_store);
 835
 836 static struct orangefs_attribute slot_timeout_secs_attribute =
 837         __ATTR(slot_timeout_secs, 0664, sysfs_int_show, sysfs_int_store);
 838
 839 static struct orangefs_attribute cache_timeout_msecs_attribute =
 840         __ATTR(cache_timeout_msecs, 0664, sysfs_int_show, sysfs_int_store);
 841
 842 static struct orangefs_attribute dcache_timeout_msecs_attribute =
 843         __ATTR(dcache_timeout_msecs, 0664, sysfs_int_show, sysfs_int_store);
 844
 845 static struct orangefs_attribute getattr_timeout_msecs_attribute =
 846         __ATTR(getattr_timeout_msecs, 0664, sysfs_int_show, sysfs_int_store);
 847
 848 static struct orangefs_attribute readahead_count_attribute =
 849         __ATTR(readahead_count, 0664, sysfs_service_op_show,
 850                sysfs_service_op_store);
 851
 852 static struct orangefs_attribute readahead_size_attribute =
 853         __ATTR(readahead_size, 0664, sysfs_service_op_show,
 854                sysfs_service_op_store);
 855
 856 static struct orangefs_attribute readahead_count_size_attribute =
 857         __ATTR(readahead_count_size, 0664, sysfs_service_op_show,
 858                sysfs_service_op_store);
 859
 860 static struct orangefs_attribute readahead_readcnt_attribute =
 861         __ATTR(readahead_readcnt, 0664, sysfs_service_op_show,
 862                sysfs_service_op_store);
 863
 864 static struct orangefs_attribute perf_counter_reset_attribute =
 865         __ATTR(perf_counter_reset,
 866                0664,
 867                sysfs_service_op_show,
 868                sysfs_service_op_store);
 869
 870 static struct orangefs_attribute perf_history_size_attribute =
 871         __ATTR(perf_history_size,
 872                0664,
 873                sysfs_service_op_show,
 874                sysfs_service_op_store);
 875
 876 static struct orangefs_attribute perf_time_interval_secs_attribute =
 877         __ATTR(perf_time_interval_secs,
 878                0664,
 879                sysfs_service_op_show,
 880                sysfs_service_op_store);
 881
 882 static struct attribute *orangefs_default_attrs[] = {
 883         &op_timeout_secs_attribute.attr,
 884         &slot_timeout_secs_attribute.attr,
 885         &cache_timeout_msecs_attribute.attr,
 886         &dcache_timeout_msecs_attribute.attr,
 887         &getattr_timeout_msecs_attribute.attr,
 888         &readahead_count_attribute.attr,
 889         &readahead_size_attribute.attr,
 890         &readahead_count_size_attribute.attr,
 891         &readahead_readcnt_attribute.attr,
 892         &perf_counter_reset_attribute.attr,
 893         &perf_history_size_attribute.attr,
 894         &perf_time_interval_secs_attribute.attr,
 895         NULL,
 896 };
 897 ATTRIBUTE_GROUPS(orangefs_default);
 898
 899 static struct kobject *orangefs_obj;
 900
 901 static void orangefs_obj_release(struct kobject *kobj)
 902 {
 903         kfree(orangefs_obj);
 904         orangefs_obj = NULL;
 905 }
 906
 907 static struct kobj_type orangefs_ktype = {
 908         .sysfs_ops = &orangefs_sysfs_ops,
 909         .default_groups = orangefs_default_groups,
 910         .release = orangefs_obj_release,
 911 };
 912
 913 static struct orangefs_attribute acache_hard_limit_attribute =
 914         __ATTR(hard_limit,
 915                0664,
 916                sysfs_service_op_show,
 917                sysfs_service_op_store);
 918
 919 static struct orangefs_attribute acache_reclaim_percent_attribute =
 920         __ATTR(reclaim_percentage,
 921                0664,
 922                sysfs_service_op_show,
 923                sysfs_service_op_store);
 924
 925 static struct orangefs_attribute acache_soft_limit_attribute =
 926         __ATTR(soft_limit,
 927                0664,
 928                sysfs_service_op_show,
 929                sysfs_service_op_store);
 930
 931 static struct orangefs_attribute acache_timeout_msecs_attribute =
 932         __ATTR(timeout_msecs,
 933                0664,
 934                sysfs_service_op_show,
 935                sysfs_service_op_store);
 936
 937 static struct attribute *acache_orangefs_default_attrs[] = {
 938         &acache_hard_limit_attribute.attr,
 939         &acache_reclaim_percent_attribute.attr,
 940         &acache_soft_limit_attribute.attr,
 941         &acache_timeout_msecs_attribute.attr,
 942         NULL,
 943 };
 944 ATTRIBUTE_GROUPS(acache_orangefs_default);
 945
 946 static struct kobject *acache_orangefs_obj;
 947
 948 static void acache_orangefs_obj_release(struct kobject *kobj)
 949 {
 950         kfree(acache_orangefs_obj);
 951         acache_orangefs_obj = NULL;
 952 }
 953
 954 static struct kobj_type acache_orangefs_ktype = {
 955         .sysfs_ops = &orangefs_sysfs_ops,
 956         .default_groups = acache_orangefs_default_groups,
 957         .release = acache_orangefs_obj_release,
 958 };
 959
 960 static struct orangefs_attribute capcache_hard_limit_attribute =
 961         __ATTR(hard_limit,
 962                0664,
 963                sysfs_service_op_show,
 964                sysfs_service_op_store);
 965
 966 static struct orangefs_attribute capcache_reclaim_percent_attribute =
 967         __ATTR(reclaim_percentage,
 968                0664,
 969                sysfs_service_op_show,
 970                sysfs_service_op_store);
 971
 972 static struct orangefs_attribute capcache_soft_limit_attribute =
 973         __ATTR(soft_limit,
 974                0664,
 975                sysfs_service_op_show,
 976                sysfs_service_op_store);
 977
 978 static struct orangefs_attribute capcache_timeout_secs_attribute =
 979         __ATTR(timeout_secs,
 980                0664,
 981                sysfs_service_op_show,
 982                sysfs_service_op_store);
 983
 984 static struct attribute *capcache_orangefs_default_attrs[] = {
 985         &capcache_hard_limit_attribute.attr,
 986         &capcache_reclaim_percent_attribute.attr,
 987         &capcache_soft_limit_attribute.attr,
 988         &capcache_timeout_secs_attribute.attr,
 989         NULL,
 990 };
 991 ATTRIBUTE_GROUPS(capcache_orangefs_default);
 992
 993 static struct kobject *capcache_orangefs_obj;
 994
 995 static void capcache_orangefs_obj_release(struct kobject *kobj)
 996 {
 997         kfree(capcache_orangefs_obj);
 998         capcache_orangefs_obj = NULL;
 999 }
1000
1001 static struct kobj_type capcache_orangefs_ktype = {
1002         .sysfs_ops = &orangefs_sysfs_ops,
1003         .default_groups = capcache_orangefs_default_groups,
1004         .release = capcache_orangefs_obj_release,
1005 };
1006
1007 static struct orangefs_attribute ccache_hard_limit_attribute =
1008         __ATTR(hard_limit,
1009                0664,
1010                sysfs_service_op_show,
1011                sysfs_service_op_store);
1012
1013 static struct orangefs_attribute ccache_reclaim_percent_attribute =
1014         __ATTR(reclaim_percentage,
1015                0664,
1016                sysfs_service_op_show,
1017                sysfs_service_op_store);
1018
1019 static struct orangefs_attribute ccache_soft_limit_attribute =
1020         __ATTR(soft_limit,
1021                0664,
1022                sysfs_service_op_show,
1023                sysfs_service_op_store);
1024
1025 static struct orangefs_attribute ccache_timeout_secs_attribute =
1026         __ATTR(timeout_secs,
1027                0664,
1028                sysfs_service_op_show,
1029                sysfs_service_op_store);
1030
1031 static struct attribute *ccache_orangefs_default_attrs[] = {
1032         &ccache_hard_limit_attribute.attr,
1033         &ccache_reclaim_percent_attribute.attr,
1034         &ccache_soft_limit_attribute.attr,
1035         &ccache_timeout_secs_attribute.attr,
1036         NULL,
1037 };
1038 ATTRIBUTE_GROUPS(ccache_orangefs_default);
1039
1040 static struct kobject *ccache_orangefs_obj;
1041
1042 static void ccache_orangefs_obj_release(struct kobject *kobj)
1043 {
1044         kfree(ccache_orangefs_obj);
1045         ccache_orangefs_obj = NULL;
1046 }
1047
1048 static struct kobj_type ccache_orangefs_ktype = {
1049         .sysfs_ops = &orangefs_sysfs_ops,
1050         .default_groups = ccache_orangefs_default_groups,
1051         .release = ccache_orangefs_obj_release,
1052 };
1053
1054 static struct orangefs_attribute ncache_hard_limit_attribute =
1055         __ATTR(hard_limit,
1056                0664,
1057                sysfs_service_op_show,
1058                sysfs_service_op_store);
1059
1060 static struct orangefs_attribute ncache_reclaim_percent_attribute =
1061         __ATTR(reclaim_percentage,
1062                0664,
1063                sysfs_service_op_show,
1064                sysfs_service_op_store);
1065
1066 static struct orangefs_attribute ncache_soft_limit_attribute =
1067         __ATTR(soft_limit,
1068                0664,
1069                sysfs_service_op_show,
1070                sysfs_service_op_store);
1071
1072 static struct orangefs_attribute ncache_timeout_msecs_attribute =
1073         __ATTR(timeout_msecs,
1074                0664,
1075                sysfs_service_op_show,
1076                sysfs_service_op_store);
1077
1078 static struct attribute *ncache_orangefs_default_attrs[] = {
1079         &ncache_hard_limit_attribute.attr,
1080         &ncache_reclaim_percent_attribute.attr,
1081         &ncache_soft_limit_attribute.attr,
1082         &ncache_timeout_msecs_attribute.attr,
1083         NULL,
1084 };
1085 ATTRIBUTE_GROUPS(ncache_orangefs_default);
1086
1087 static struct kobject *ncache_orangefs_obj;
1088
1089 static void ncache_orangefs_obj_release(struct kobject *kobj)
1090 {
1091         kfree(ncache_orangefs_obj);
1092         ncache_orangefs_obj = NULL;
1093 }
1094
1095 static struct kobj_type ncache_orangefs_ktype = {
1096         .sysfs_ops = &orangefs_sysfs_ops,
1097         .default_groups = ncache_orangefs_default_groups,
1098         .release = ncache_orangefs_obj_release,
1099 };
1100
1101 static struct orangefs_attribute pc_acache_attribute =
1102         __ATTR(acache,
1103                0664,
1104                sysfs_service_op_show,
1105                NULL);
1106
1107 static struct orangefs_attribute pc_capcache_attribute =
1108         __ATTR(capcache,
1109                0664,
1110                sysfs_service_op_show,
1111                NULL);
1112
1113 static struct orangefs_attribute pc_ncache_attribute =
1114         __ATTR(ncache,
1115                0664,
1116                sysfs_service_op_show,
1117                NULL);
1118
1119 static struct attribute *pc_orangefs_default_attrs[] = {
1120         &pc_acache_attribute.attr,
1121         &pc_capcache_attribute.attr,
1122         &pc_ncache_attribute.attr,
1123         NULL,
1124 };
1125 ATTRIBUTE_GROUPS(pc_orangefs_default);
1126
1127 static struct kobject *pc_orangefs_obj;
1128
1129 static void pc_orangefs_obj_release(struct kobject *kobj)
1130 {
1131         kfree(pc_orangefs_obj);
1132         pc_orangefs_obj = NULL;
1133 }
1134
1135 static struct kobj_type pc_orangefs_ktype = {
1136         .sysfs_ops = &orangefs_sysfs_ops,
1137         .default_groups = pc_orangefs_default_groups,
1138         .release = pc_orangefs_obj_release,
1139 };
1140
1141 static struct orangefs_attribute stats_reads_attribute =
1142         __ATTR(reads,
1143                0664,
1144                sysfs_int_show,
1145                NULL);
1146
1147 static struct orangefs_attribute stats_writes_attribute =
1148         __ATTR(writes,
1149                0664,
1150                sysfs_int_show,
1151                NULL);
1152
1153 static struct attribute *stats_orangefs_default_attrs[] = {
1154         &stats_reads_attribute.attr,
1155         &stats_writes_attribute.attr,
1156         NULL,
1157 };
1158 ATTRIBUTE_GROUPS(stats_orangefs_default);
1159
1160 static struct kobject *stats_orangefs_obj;
1161
1162 static void stats_orangefs_obj_release(struct kobject *kobj)
1163 {
1164         kfree(stats_orangefs_obj);
1165         stats_orangefs_obj = NULL;
1166 }
1167
1168 static struct kobj_type stats_orangefs_ktype = {
1169         .sysfs_ops = &orangefs_sysfs_ops,
1170         .default_groups = stats_orangefs_default_groups,
1171         .release = stats_orangefs_obj_release,
1172 };
1173
1174 int orangefs_sysfs_init(void)
1175 {
1176         int rc = -EINVAL;
1177
1178         gossip_debug(GOSSIP_SYSFS_DEBUG, "orangefs_sysfs_init: start\n");
1179
1180         /* create /sys/fs/orangefs. */
1181         orangefs_obj = kzalloc(sizeof(*orangefs_obj), GFP_KERNEL);
1182         if (!orangefs_obj)
1183                 goto out;
1184
1185         rc = kobject_init_and_add(orangefs_obj,
1186                                   &orangefs_ktype,
1187                                   fs_kobj,
1188                                   ORANGEFS_KOBJ_ID);
1189
1190         if (rc)
1191                 goto ofs_obj_bail;
1192
1193         kobject_uevent(orangefs_obj, KOBJ_ADD);
1194
1195         /* create /sys/fs/orangefs/acache. */
1196         acache_orangefs_obj = kzalloc(sizeof(*acache_orangefs_obj), GFP_KERNEL);
1197         if (!acache_orangefs_obj) {
1198                 rc = -EINVAL;
1199                 goto ofs_obj_bail;
1200         }
1201
1202         rc = kobject_init_and_add(acache_orangefs_obj,
1203                                   &acache_orangefs_ktype,
1204                                   orangefs_obj,
1205                                   ACACHE_KOBJ_ID);
1206
1207         if (rc)
1208                 goto acache_obj_bail;
1209
1210         kobject_uevent(acache_orangefs_obj, KOBJ_ADD);
1211
1212         /* create /sys/fs/orangefs/capcache. */
1213         capcache_orangefs_obj =
1214                 kzalloc(sizeof(*capcache_orangefs_obj), GFP_KERNEL);
1215         if (!capcache_orangefs_obj) {
1216                 rc = -EINVAL;
1217                 goto acache_obj_bail;
1218         }
1219
1220         rc = kobject_init_and_add(capcache_orangefs_obj,
1221                                   &capcache_orangefs_ktype,
1222                                   orangefs_obj,
1223                                   CAPCACHE_KOBJ_ID);
1224         if (rc)
1225                 goto capcache_obj_bail;
1226
1227         kobject_uevent(capcache_orangefs_obj, KOBJ_ADD);
1228
1229         /* create /sys/fs/orangefs/ccache. */
1230         ccache_orangefs_obj =
1231                 kzalloc(sizeof(*ccache_orangefs_obj), GFP_KERNEL);
1232         if (!ccache_orangefs_obj) {
1233                 rc = -EINVAL;
1234                 goto capcache_obj_bail;
1235         }
1236
1237         rc = kobject_init_and_add(ccache_orangefs_obj,
1238                                   &ccache_orangefs_ktype,
1239                                   orangefs_obj,
1240                                   CCACHE_KOBJ_ID);
1241         if (rc)
1242                 goto ccache_obj_bail;
1243
1244         kobject_uevent(ccache_orangefs_obj, KOBJ_ADD);
1245
1246         /* create /sys/fs/orangefs/ncache. */
1247         ncache_orangefs_obj = kzalloc(sizeof(*ncache_orangefs_obj), GFP_KERNEL);
1248         if (!ncache_orangefs_obj) {
1249                 rc = -EINVAL;
1250                 goto ccache_obj_bail;
1251         }
1252
1253         rc = kobject_init_and_add(ncache_orangefs_obj,
1254                                   &ncache_orangefs_ktype,
1255                                   orangefs_obj,
1256                                   NCACHE_KOBJ_ID);
1257
1258         if (rc)
1259                 goto ncache_obj_bail;
1260
1261         kobject_uevent(ncache_orangefs_obj, KOBJ_ADD);
1262
1263         /* create /sys/fs/orangefs/perf_counters. */
1264         pc_orangefs_obj = kzalloc(sizeof(*pc_orangefs_obj), GFP_KERNEL);
1265         if (!pc_orangefs_obj) {
1266                 rc = -EINVAL;
1267                 goto ncache_obj_bail;
1268         }
1269
1270         rc = kobject_init_and_add(pc_orangefs_obj,
1271                                   &pc_orangefs_ktype,
1272                                   orangefs_obj,
1273                                   "perf_counters");
1274
1275         if (rc)
1276                 goto pc_obj_bail;
1277
1278         kobject_uevent(pc_orangefs_obj, KOBJ_ADD);
1279
1280         /* create /sys/fs/orangefs/stats. */
1281         stats_orangefs_obj = kzalloc(sizeof(*stats_orangefs_obj), GFP_KERNEL);
1282         if (!stats_orangefs_obj) {
1283                 rc = -EINVAL;
1284                 goto pc_obj_bail;
1285         }
1286
1287         rc = kobject_init_and_add(stats_orangefs_obj,
1288                                   &stats_orangefs_ktype,
1289                                   orangefs_obj,
1290                                   STATS_KOBJ_ID);
1291
1292         if (rc)
1293                 goto stats_obj_bail;
1294
1295         kobject_uevent(stats_orangefs_obj, KOBJ_ADD);
1296         goto out;
1297
1298 stats_obj_bail:
1299                 kobject_put(stats_orangefs_obj);
1300 pc_obj_bail:
1301                 kobject_put(pc_orangefs_obj);
1302 ncache_obj_bail:
1303                 kobject_put(ncache_orangefs_obj);
1304 ccache_obj_bail:
1305                 kobject_put(ccache_orangefs_obj);
1306 capcache_obj_bail:
1307                 kobject_put(capcache_orangefs_obj);
1308 acache_obj_bail:
1309                 kobject_put(acache_orangefs_obj);
1310 ofs_obj_bail:
1311                 kobject_put(orangefs_obj);
1312 out:
1313         return rc;
1314 }
1315
1316 void orangefs_sysfs_exit(void)
1317 {
1318         gossip_debug(GOSSIP_SYSFS_DEBUG, "orangefs_sysfs_exit: start\n");
1319         kobject_put(acache_orangefs_obj);
1320         kobject_put(capcache_orangefs_obj);
1321         kobject_put(ccache_orangefs_obj);
1322         kobject_put(ncache_orangefs_obj);
1323         kobject_put(pc_orangefs_obj);
1324         kobject_put(stats_orangefs_obj);
1325         kobject_put(orangefs_obj);
1326 }