fs/orangefs/orangefs-sysfs.c

   1 /*
   2  * Documentation/ABI/stable/orangefs-sysfs:
   3  *
   4  * What:                /sys/fs/orangefs/perf_counter_reset
   5  * Date:                June 2015
   6  * Contact:             Mike Marshall <hubcap@omnibond.com>
   7  * Description:
   8  *                      echo a 0 or a 1 into perf_counter_reset to
   9  *                      reset all the counters in
  10  *                      /sys/fs/orangefs/perf_counters
  11  *                      except ones with PINT_PERF_PRESERVE set.
  12  *
  13  *
  14  * What:                /sys/fs/orangefs/perf_counters/...
  15  * Date:                Jun 2015
  16  * Contact:             Mike Marshall <hubcap@omnibond.com>
  17  * Description:
  18  *                      Counters and settings for various caches.
  19  *                      Read only.
  20  *
  21  *
  22  * What:                /sys/fs/orangefs/perf_time_interval_secs
  23  * Date:                Jun 2015
  24  * Contact:             Mike Marshall <hubcap@omnibond.com>
  25  * Description:
  26  *                      Length of perf counter intervals in
  27  *                      seconds.
  28  *
  29  *
  30  * What:                /sys/fs/orangefs/perf_history_size
  31  * Date:                Jun 2015
  32  * Contact:             Mike Marshall <hubcap@omnibond.com>
  33  * Description:
  34  *                      The perf_counters cache statistics have N, or
  35  *                      perf_history_size, samples. The default is
  36  *                      one.
  37  *
  38  *                      Every perf_time_interval_secs the (first)
  39  *                      samples are reset.
  40  *
  41  *                      If N is greater than one, the "current" set
  42  *                      of samples is reset, and the samples from the
  43  *                      other N-1 intervals remain available.
  44  *
  45  *
  46  * What:                /sys/fs/orangefs/op_timeout_secs
  47  * Date:                Jun 2015
  48  * Contact:             Mike Marshall <hubcap@omnibond.com>
  49  * Description:
  50  *                      Service operation timeout in seconds.
  51  *
  52  *
  53  * What:                /sys/fs/orangefs/slot_timeout_secs
  54  * Date:                Jun 2015
  55  * Contact:             Mike Marshall <hubcap@omnibond.com>
  56  * Description:
  57  *                      "Slot" timeout in seconds. A "slot"
  58  *                      is an indexed buffer in the shared
  59  *                      memory segment used for communication
  60  *                      between the kernel module and userspace.
  61  *                      Slots are requested and waited for,
  62  *                      the wait times out after slot_timeout_secs.
  63  *
  64  *
  65  * What:                /sys/fs/orangefs/acache/...
  66  * Date:                Jun 2015
  67  * Contact:             Mike Marshall <hubcap@omnibond.com>
  68  * Description:
  69  *                      Attribute cache configurable settings.
  70  *
  71  *
  72  * What:                /sys/fs/orangefs/ncache/...
  73  * Date:                Jun 2015
  74  * Contact:             Mike Marshall <hubcap@omnibond.com>
  75  * Description:
  76  *                      Name cache configurable settings.
  77  *
  78  *
  79  * What:                /sys/fs/orangefs/capcache/...
  80  * Date:                Jun 2015
  81  * Contact:             Mike Marshall <hubcap@omnibond.com>
  82  * Description:
  83  *                      Capability cache configurable settings.
  84  *
  85  *
  86  * What:                /sys/fs/orangefs/ccache/...
  87  * Date:                Jun 2015
  88  * Contact:             Mike Marshall <hubcap@omnibond.com>
  89  * Description:
  90  *                      Credential cache configurable settings.
  91  *
  92  */
  93
  94 #include <linux/fs.h>
  95 #include <linux/kobject.h>
  96 #include <linux/string.h>
  97 #include <linux/sysfs.h>
  98 #include <linux/module.h>
  99 #include <linux/init.h>
 100
 101 #include "protocol.h"
 102 #include "orangefs-kernel.h"
 103 #include "orangefs-sysfs.h"
 104
 105 #define ORANGEFS_KOBJ_ID "orangefs"
 106 #define ACACHE_KOBJ_ID "acache"
 107 #define CAPCACHE_KOBJ_ID "capcache"
 108 #define CCACHE_KOBJ_ID "ccache"
 109 #define NCACHE_KOBJ_ID "ncache"
 110 #define PC_KOBJ_ID "pc"
 111 #define STATS_KOBJ_ID "stats"
 112
 113 struct orangefs_obj {
 114         struct kobject kobj;
 115         int op_timeout_secs;
 116         int perf_counter_reset;
 117         int perf_history_size;
 118         int perf_time_interval_secs;
 119         int slot_timeout_secs;
 120 };
 121
 122 struct acache_orangefs_obj {
 123         struct kobject kobj;
 124         int hard_limit;
 125         int reclaim_percentage;
 126         int soft_limit;
 127         int timeout_msecs;
 128 };
 129
 130 struct capcache_orangefs_obj {
 131         struct kobject kobj;
 132         int hard_limit;
 133         int reclaim_percentage;
 134         int soft_limit;
 135         int timeout_secs;
 136 };
 137
 138 struct ccache_orangefs_obj {
 139         struct kobject kobj;
 140         int hard_limit;
 141         int reclaim_percentage;
 142         int soft_limit;
 143         int timeout_secs;
 144 };
 145
 146 struct ncache_orangefs_obj {
 147         struct kobject kobj;
 148         int hard_limit;
 149         int reclaim_percentage;
 150         int soft_limit;
 151         int timeout_msecs;
 152 };
 153
 154 struct pc_orangefs_obj {
 155         struct kobject kobj;
 156         char *acache;
 157         char *capcache;
 158         char *ncache;
 159 };
 160
 161 struct stats_orangefs_obj {
 162         struct kobject kobj;
 163         int reads;
 164         int writes;
 165 };
 166
 167 struct orangefs_attribute {
 168         struct attribute attr;
 169         ssize_t (*show)(struct orangefs_obj *orangefs_obj,
 170                         struct orangefs_attribute *attr,
 171                         char *buf);
 172         ssize_t (*store)(struct orangefs_obj *orangefs_obj,
 173                          struct orangefs_attribute *attr,
 174                          const char *buf,
 175                          size_t count);
 176 };
 177
 178 struct acache_orangefs_attribute {
 179         struct attribute attr;
 180         ssize_t (*show)(struct acache_orangefs_obj *acache_orangefs_obj,
 181                         struct acache_orangefs_attribute *attr,
 182                         char *buf);
 183         ssize_t (*store)(struct acache_orangefs_obj *acache_orangefs_obj,
 184                          struct acache_orangefs_attribute *attr,
 185                          const char *buf,
 186                          size_t count);
 187 };
 188
 189 struct capcache_orangefs_attribute {
 190         struct attribute attr;
 191         ssize_t (*show)(struct capcache_orangefs_obj *capcache_orangefs_obj,
 192                         struct capcache_orangefs_attribute *attr,
 193                         char *buf);
 194         ssize_t (*store)(struct capcache_orangefs_obj *capcache_orangefs_obj,
 195                          struct capcache_orangefs_attribute *attr,
 196                          const char *buf,
 197                          size_t count);
 198 };
 199
 200 struct ccache_orangefs_attribute {
 201         struct attribute attr;
 202         ssize_t (*show)(struct ccache_orangefs_obj *ccache_orangefs_obj,
 203                         struct ccache_orangefs_attribute *attr,
 204                         char *buf);
 205         ssize_t (*store)(struct ccache_orangefs_obj *ccache_orangefs_obj,
 206                          struct ccache_orangefs_attribute *attr,
 207                          const char *buf,
 208                          size_t count);
 209 };
 210
 211 struct ncache_orangefs_attribute {
 212         struct attribute attr;
 213         ssize_t (*show)(struct ncache_orangefs_obj *ncache_orangefs_obj,
 214                         struct ncache_orangefs_attribute *attr,
 215                         char *buf);
 216         ssize_t (*store)(struct ncache_orangefs_obj *ncache_orangefs_obj,
 217                          struct ncache_orangefs_attribute *attr,
 218                          const char *buf,
 219                          size_t count);
 220 };
 221
 222 struct pc_orangefs_attribute {
 223         struct attribute attr;
 224         ssize_t (*show)(struct pc_orangefs_obj *pc_orangefs_obj,
 225                         struct pc_orangefs_attribute *attr,
 226                         char *buf);
 227         ssize_t (*store)(struct pc_orangefs_obj *pc_orangefs_obj,
 228                          struct pc_orangefs_attribute *attr,
 229                          const char *buf,
 230                          size_t count);
 231 };
 232
 233 struct stats_orangefs_attribute {
 234         struct attribute attr;
 235         ssize_t (*show)(struct stats_orangefs_obj *stats_orangefs_obj,
 236                         struct stats_orangefs_attribute *attr,
 237                         char *buf);
 238         ssize_t (*store)(struct stats_orangefs_obj *stats_orangefs_obj,
 239                          struct stats_orangefs_attribute *attr,
 240                          const char *buf,
 241                          size_t count);
 242 };
 243
 244 static ssize_t orangefs_attr_show(struct kobject *kobj,
 245                                   struct attribute *attr,
 246                                   char *buf)
 247 {
 248         struct orangefs_attribute *attribute;
 249         struct orangefs_obj *orangefs_obj;
 250         int rc;
 251
 252         attribute = container_of(attr, struct orangefs_attribute, attr);
 253         orangefs_obj = container_of(kobj, struct orangefs_obj, kobj);
 254
 255         if (!attribute->show) {
 256                 rc = -EIO;
 257                 goto out;
 258         }
 259
 260         rc = attribute->show(orangefs_obj, attribute, buf);
 261
 262 out:
 263         return rc;
 264 }
 265
 266 static ssize_t orangefs_attr_store(struct kobject *kobj,
 267                                    struct attribute *attr,
 268                                    const char *buf,
 269                                    size_t len)
 270 {
 271         struct orangefs_attribute *attribute;
 272         struct orangefs_obj *orangefs_obj;
 273         int rc;
 274
 275         gossip_debug(GOSSIP_SYSFS_DEBUG,
 276                      "orangefs_attr_store: start\n");
 277
 278         attribute = container_of(attr, struct orangefs_attribute, attr);
 279         orangefs_obj = container_of(kobj, struct orangefs_obj, kobj);
 280
 281         if (!attribute->store) {
 282                 rc = -EIO;
 283                 goto out;
 284         }
 285
 286         rc = attribute->store(orangefs_obj, attribute, buf, len);
 287
 288 out:
 289         return rc;
 290 }
 291
 292 static const struct sysfs_ops orangefs_sysfs_ops = {
 293         .show = orangefs_attr_show,
 294         .store = orangefs_attr_store,
 295 };
 296
 297 static ssize_t acache_orangefs_attr_show(struct kobject *kobj,
 298                                          struct attribute *attr,
 299                                          char *buf)
 300 {
 301         struct acache_orangefs_attribute *attribute;
 302         struct acache_orangefs_obj *acache_orangefs_obj;
 303         int rc;
 304
 305         attribute = container_of(attr, struct acache_orangefs_attribute, attr);
 306         acache_orangefs_obj =
 307                 container_of(kobj, struct acache_orangefs_obj, kobj);
 308
 309         if (!attribute->show) {
 310                 rc = -EIO;
 311                 goto out;
 312         }
 313
 314         rc = attribute->show(acache_orangefs_obj, attribute, buf);
 315
 316 out:
 317         return rc;
 318 }
 319
 320 static ssize_t acache_orangefs_attr_store(struct kobject *kobj,
 321                                           struct attribute *attr,
 322                                           const char *buf,
 323                                           size_t len)
 324 {
 325         struct acache_orangefs_attribute *attribute;
 326         struct acache_orangefs_obj *acache_orangefs_obj;
 327         int rc;
 328
 329         gossip_debug(GOSSIP_SYSFS_DEBUG,
 330                      "acache_orangefs_attr_store: start\n");
 331
 332         attribute = container_of(attr, struct acache_orangefs_attribute, attr);
 333         acache_orangefs_obj =
 334                 container_of(kobj, struct acache_orangefs_obj, kobj);
 335
 336         if (!attribute->store) {
 337                 rc = -EIO;
 338                 goto out;
 339         }
 340
 341         rc = attribute->store(acache_orangefs_obj, attribute, buf, len);
 342
 343 out:
 344         return rc;
 345 }
 346
 347 static const struct sysfs_ops acache_orangefs_sysfs_ops = {
 348         .show = acache_orangefs_attr_show,
 349         .store = acache_orangefs_attr_store,
 350 };
 351
 352 static ssize_t capcache_orangefs_attr_show(struct kobject *kobj,
 353                                            struct attribute *attr,
 354                                            char *buf)
 355 {
 356         struct capcache_orangefs_attribute *attribute;
 357         struct capcache_orangefs_obj *capcache_orangefs_obj;
 358         int rc;
 359
 360         attribute =
 361                 container_of(attr, struct capcache_orangefs_attribute, attr);
 362         capcache_orangefs_obj =
 363                 container_of(kobj, struct capcache_orangefs_obj, kobj);
 364
 365         if (!attribute->show) {
 366                 rc = -EIO;
 367                 goto out;
 368         }
 369
 370         rc = attribute->show(capcache_orangefs_obj, attribute, buf);
 371
 372 out:
 373         return rc;
 374 }
 375
 376 static ssize_t capcache_orangefs_attr_store(struct kobject *kobj,
 377                                             struct attribute *attr,
 378                                             const char *buf,
 379                                             size_t len)
 380 {
 381         struct capcache_orangefs_attribute *attribute;
 382         struct capcache_orangefs_obj *capcache_orangefs_obj;
 383         int rc;
 384
 385         gossip_debug(GOSSIP_SYSFS_DEBUG,
 386                      "capcache_orangefs_attr_store: start\n");
 387
 388         attribute =
 389                 container_of(attr, struct capcache_orangefs_attribute, attr);
 390         capcache_orangefs_obj =
 391                 container_of(kobj, struct capcache_orangefs_obj, kobj);
 392
 393         if (!attribute->store) {
 394                 rc = -EIO;
 395                 goto out;
 396         }
 397
 398         rc = attribute->store(capcache_orangefs_obj, attribute, buf, len);
 399
 400 out:
 401         return rc;
 402 }
 403
 404 static const struct sysfs_ops capcache_orangefs_sysfs_ops = {
 405         .show = capcache_orangefs_attr_show,
 406         .store = capcache_orangefs_attr_store,
 407 };
 408
 409 static ssize_t ccache_orangefs_attr_show(struct kobject *kobj,
 410                                          struct attribute *attr,
 411                                          char *buf)
 412 {
 413         struct ccache_orangefs_attribute *attribute;
 414         struct ccache_orangefs_obj *ccache_orangefs_obj;
 415         int rc;
 416
 417         attribute =
 418                 container_of(attr, struct ccache_orangefs_attribute, attr);
 419         ccache_orangefs_obj =
 420                 container_of(kobj, struct ccache_orangefs_obj, kobj);
 421
 422         if (!attribute->show) {
 423                 rc = -EIO;
 424                 goto out;
 425         }
 426
 427         rc = attribute->show(ccache_orangefs_obj, attribute, buf);
 428
 429 out:
 430         return rc;
 431 }
 432
 433 static ssize_t ccache_orangefs_attr_store(struct kobject *kobj,
 434                                           struct attribute *attr,
 435                                           const char *buf,
 436                                           size_t len)
 437 {
 438         struct ccache_orangefs_attribute *attribute;
 439         struct ccache_orangefs_obj *ccache_orangefs_obj;
 440         int rc;
 441
 442         gossip_debug(GOSSIP_SYSFS_DEBUG,
 443                      "ccache_orangefs_attr_store: start\n");
 444
 445         attribute =
 446                 container_of(attr, struct ccache_orangefs_attribute, attr);
 447         ccache_orangefs_obj =
 448                 container_of(kobj, struct ccache_orangefs_obj, kobj);
 449
 450         if (!attribute->store) {
 451                 rc = -EIO;
 452                 goto out;
 453         }
 454
 455         rc = attribute->store(ccache_orangefs_obj, attribute, buf, len);
 456
 457 out:
 458         return rc;
 459 }
 460
 461 static const struct sysfs_ops ccache_orangefs_sysfs_ops = {
 462         .show = ccache_orangefs_attr_show,
 463         .store = ccache_orangefs_attr_store,
 464 };
 465
 466 static ssize_t ncache_orangefs_attr_show(struct kobject *kobj,
 467                                          struct attribute *attr,
 468                                          char *buf)
 469 {
 470         struct ncache_orangefs_attribute *attribute;
 471         struct ncache_orangefs_obj *ncache_orangefs_obj;
 472         int rc;
 473
 474         attribute = container_of(attr, struct ncache_orangefs_attribute, attr);
 475         ncache_orangefs_obj =
 476                 container_of(kobj, struct ncache_orangefs_obj, kobj);
 477
 478         if (!attribute->show) {
 479                 rc = -EIO;
 480                 goto out;
 481         }
 482
 483         rc = attribute->show(ncache_orangefs_obj, attribute, buf);
 484
 485 out:
 486         return rc;
 487 }
 488
 489 static ssize_t ncache_orangefs_attr_store(struct kobject *kobj,
 490                                           struct attribute *attr,
 491                                           const char *buf,
 492                                           size_t len)
 493 {
 494         struct ncache_orangefs_attribute *attribute;
 495         struct ncache_orangefs_obj *ncache_orangefs_obj;
 496         int rc;
 497
 498         gossip_debug(GOSSIP_SYSFS_DEBUG,
 499                      "ncache_orangefs_attr_store: start\n");
 500
 501         attribute = container_of(attr, struct ncache_orangefs_attribute, attr);
 502         ncache_orangefs_obj =
 503                 container_of(kobj, struct ncache_orangefs_obj, kobj);
 504
 505         if (!attribute->store) {
 506                 rc = -EIO;
 507                 goto out;
 508         }
 509
 510         rc = attribute->store(ncache_orangefs_obj, attribute, buf, len);
 511
 512 out:
 513         return rc;
 514 }
 515
 516 static const struct sysfs_ops ncache_orangefs_sysfs_ops = {
 517         .show = ncache_orangefs_attr_show,
 518         .store = ncache_orangefs_attr_store,
 519 };
 520
 521 static ssize_t pc_orangefs_attr_show(struct kobject *kobj,
 522                                      struct attribute *attr,
 523                                      char *buf)
 524 {
 525         struct pc_orangefs_attribute *attribute;
 526         struct pc_orangefs_obj *pc_orangefs_obj;
 527         int rc;
 528
 529         attribute = container_of(attr, struct pc_orangefs_attribute, attr);
 530         pc_orangefs_obj =
 531                 container_of(kobj, struct pc_orangefs_obj, kobj);
 532
 533         if (!attribute->show) {
 534                 rc = -EIO;
 535                 goto out;
 536         }
 537
 538         rc = attribute->show(pc_orangefs_obj, attribute, buf);
 539
 540 out:
 541         return rc;
 542 }
 543
 544 static const struct sysfs_ops pc_orangefs_sysfs_ops = {
 545         .show = pc_orangefs_attr_show,
 546 };
 547
 548 static ssize_t stats_orangefs_attr_show(struct kobject *kobj,
 549                                         struct attribute *attr,
 550                                         char *buf)
 551 {
 552         struct stats_orangefs_attribute *attribute;
 553         struct stats_orangefs_obj *stats_orangefs_obj;
 554         int rc;
 555
 556         attribute = container_of(attr, struct stats_orangefs_attribute, attr);
 557         stats_orangefs_obj =
 558                 container_of(kobj, struct stats_orangefs_obj, kobj);
 559
 560         if (!attribute->show) {
 561                 rc = -EIO;
 562                 goto out;
 563         }
 564
 565         rc = attribute->show(stats_orangefs_obj, attribute, buf);
 566
 567 out:
 568         return rc;
 569 }
 570
 571 static const struct sysfs_ops stats_orangefs_sysfs_ops = {
 572         .show = stats_orangefs_attr_show,
 573 };
 574
 575 static void orangefs_release(struct kobject *kobj)
 576 {
 577         struct orangefs_obj *orangefs_obj;
 578
 579         orangefs_obj = container_of(kobj, struct orangefs_obj, kobj);
 580         kfree(orangefs_obj);
 581 }
 582
 583 static void acache_orangefs_release(struct kobject *kobj)
 584 {
 585         struct acache_orangefs_obj *acache_orangefs_obj;
 586
 587         acache_orangefs_obj =
 588                 container_of(kobj, struct acache_orangefs_obj, kobj);
 589         kfree(acache_orangefs_obj);
 590 }
 591
 592 static void capcache_orangefs_release(struct kobject *kobj)
 593 {
 594         struct capcache_orangefs_obj *capcache_orangefs_obj;
 595
 596         capcache_orangefs_obj =
 597                 container_of(kobj, struct capcache_orangefs_obj, kobj);
 598         kfree(capcache_orangefs_obj);
 599 }
 600
 601 static void ccache_orangefs_release(struct kobject *kobj)
 602 {
 603         struct ccache_orangefs_obj *ccache_orangefs_obj;
 604
 605         ccache_orangefs_obj =
 606                 container_of(kobj, struct ccache_orangefs_obj, kobj);
 607         kfree(ccache_orangefs_obj);
 608 }
 609
 610 static void ncache_orangefs_release(struct kobject *kobj)
 611 {
 612         struct ncache_orangefs_obj *ncache_orangefs_obj;
 613
 614         ncache_orangefs_obj =
 615                 container_of(kobj, struct ncache_orangefs_obj, kobj);
 616         kfree(ncache_orangefs_obj);
 617 }
 618
 619 static void pc_orangefs_release(struct kobject *kobj)
 620 {
 621         struct pc_orangefs_obj *pc_orangefs_obj;
 622
 623         pc_orangefs_obj =
 624                 container_of(kobj, struct pc_orangefs_obj, kobj);
 625         kfree(pc_orangefs_obj);
 626 }
 627
 628 static void stats_orangefs_release(struct kobject *kobj)
 629 {
 630         struct stats_orangefs_obj *stats_orangefs_obj;
 631
 632         stats_orangefs_obj =
 633                 container_of(kobj, struct stats_orangefs_obj, kobj);
 634         kfree(stats_orangefs_obj);
 635 }
 636
 637 static ssize_t sysfs_int_show(char *kobj_id, char *buf, void *attr)
 638 {
 639         int rc = -EIO;
 640         struct orangefs_attribute *orangefs_attr;
 641         struct stats_orangefs_attribute *stats_orangefs_attr;
 642
 643         gossip_debug(GOSSIP_SYSFS_DEBUG, "sysfs_int_show: id:%s:\n", kobj_id);
 644
 645         if (!strcmp(kobj_id, ORANGEFS_KOBJ_ID)) {
 646                 orangefs_attr = (struct orangefs_attribute *)attr;
 647
 648                 if (!strcmp(orangefs_attr->attr.name, "op_timeout_secs")) {
 649                         rc = scnprintf(buf,
 650                                        PAGE_SIZE,
 651                                        "%d\n",
 652                                        op_timeout_secs);
 653                         goto out;
 654                 } else if (!strcmp(orangefs_attr->attr.name,
 655                                    "slot_timeout_secs")) {
 656                         rc = scnprintf(buf,
 657                                        PAGE_SIZE,
 658                                        "%d\n",
 659                                        slot_timeout_secs);
 660                         goto out;
 661                 } else {
 662                         goto out;
 663                 }
 664
 665         } else if (!strcmp(kobj_id, STATS_KOBJ_ID)) {
 666                 stats_orangefs_attr = (struct stats_orangefs_attribute *)attr;
 667
 668                 if (!strcmp(stats_orangefs_attr->attr.name, "reads")) {
 669                         rc = scnprintf(buf,
 670                                        PAGE_SIZE,
 671                                        "%lu\n",
 672                                        g_orangefs_stats.reads);
 673                         goto out;
 674                 } else if (!strcmp(stats_orangefs_attr->attr.name, "writes")) {
 675                         rc = scnprintf(buf,
 676                                        PAGE_SIZE,
 677                                        "%lu\n",
 678                                        g_orangefs_stats.writes);
 679                         goto out;
 680                 } else {
 681                         goto out;
 682                 }
 683         }
 684
 685 out:
 686
 687         return rc;
 688 }
 689
 690 static ssize_t int_orangefs_show(struct orangefs_obj *orangefs_obj,
 691                                  struct orangefs_attribute *attr,
 692                                  char *buf)
 693 {
 694         int rc;
 695
 696         gossip_debug(GOSSIP_SYSFS_DEBUG,
 697                      "int_orangefs_show:start attr->attr.name:%s:\n",
 698                      attr->attr.name);
 699
 700         rc = sysfs_int_show(ORANGEFS_KOBJ_ID, buf, (void *) attr);
 701
 702         return rc;
 703 }
 704
 705 static ssize_t int_stats_show(struct stats_orangefs_obj *stats_orangefs_obj,
 706                         struct stats_orangefs_attribute *attr,
 707                         char *buf)
 708 {
 709         int rc;
 710
 711         gossip_debug(GOSSIP_SYSFS_DEBUG,
 712                      "int_stats_show:start attr->attr.name:%s:\n",
 713                      attr->attr.name);
 714
 715         rc = sysfs_int_show(STATS_KOBJ_ID, buf, (void *) attr);
 716
 717         return rc;
 718 }
 719
 720 static ssize_t int_store(struct orangefs_obj *orangefs_obj,
 721                          struct orangefs_attribute *attr,
 722                          const char *buf,
 723                          size_t count)
 724 {
 725         int rc = 0;
 726
 727         gossip_debug(GOSSIP_SYSFS_DEBUG,
 728                      "int_store: start attr->attr.name:%s: buf:%s:\n",
 729                      attr->attr.name, buf);
 730
 731         if (!strcmp(attr->attr.name, "op_timeout_secs")) {
 732                 rc = kstrtoint(buf, 0, &op_timeout_secs);
 733                 goto out;
 734         } else if (!strcmp(attr->attr.name, "slot_timeout_secs")) {
 735                 rc = kstrtoint(buf, 0, &slot_timeout_secs);
 736                 goto out;
 737         } else {
 738                 goto out;
 739         }
 740
 741 out:
 742         if (rc)
 743                 rc = -EINVAL;
 744         else
 745                 rc = count;
 746
 747         return rc;
 748 }
 749
 750 /*
 751  * obtain attribute values from userspace with a service operation.
 752  */
 753 static int sysfs_service_op_show(char *kobj_id, char *buf, void *attr)
 754 {
 755         struct orangefs_kernel_op_s *new_op = NULL;
 756         int rc = 0;
 757         char *ser_op_type = NULL;
 758         struct orangefs_attribute *orangefs_attr;
 759         struct acache_orangefs_attribute *acache_attr;
 760         struct capcache_orangefs_attribute *capcache_attr;
 761         struct ccache_orangefs_attribute *ccache_attr;
 762         struct ncache_orangefs_attribute *ncache_attr;
 763         struct pc_orangefs_attribute *pc_attr;
 764         __u32 op_alloc_type;
 765
 766         gossip_debug(GOSSIP_SYSFS_DEBUG,
 767                      "sysfs_service_op_show: id:%s:\n",
 768                      kobj_id);
 769
 770         if (strcmp(kobj_id, PC_KOBJ_ID))
 771                 op_alloc_type = ORANGEFS_VFS_OP_PARAM;
 772         else
 773                 op_alloc_type = ORANGEFS_VFS_OP_PERF_COUNT;
 774
 775         new_op = op_alloc(op_alloc_type);
 776         if (!new_op)
 777                 return -ENOMEM;
 778
 779         /* Can't do a service_operation if the client is not running... */
 780         rc = is_daemon_in_service();
 781         if (rc) {
 782                 pr_info("%s: Client not running :%d:\n",
 783                         __func__,
 784                         is_daemon_in_service());
 785                 goto out;
 786         }
 787
 788         if (strcmp(kobj_id, PC_KOBJ_ID))
 789                 new_op->upcall.req.param.type = ORANGEFS_PARAM_REQUEST_GET;
 790
 791         if (!strcmp(kobj_id, ORANGEFS_KOBJ_ID)) {
 792                 orangefs_attr = (struct orangefs_attribute *)attr;
 793
 794                 if (!strcmp(orangefs_attr->attr.name, "perf_history_size"))
 795                         new_op->upcall.req.param.op =
 796                                 ORANGEFS_PARAM_REQUEST_OP_PERF_HISTORY_SIZE;
 797                 else if (!strcmp(orangefs_attr->attr.name,
 798                                  "perf_time_interval_secs"))
 799                         new_op->upcall.req.param.op =
 800                                 ORANGEFS_PARAM_REQUEST_OP_PERF_TIME_INTERVAL_SECS;
 801                 else if (!strcmp(orangefs_attr->attr.name,
 802                                  "perf_counter_reset"))
 803                         new_op->upcall.req.param.op =
 804                                 ORANGEFS_PARAM_REQUEST_OP_PERF_RESET;
 805
 806         } else if (!strcmp(kobj_id, ACACHE_KOBJ_ID)) {
 807                 acache_attr = (struct acache_orangefs_attribute *)attr;
 808
 809                 if (!strcmp(acache_attr->attr.name, "timeout_msecs"))
 810                         new_op->upcall.req.param.op =
 811                                 ORANGEFS_PARAM_REQUEST_OP_ACACHE_TIMEOUT_MSECS;
 812
 813                 if (!strcmp(acache_attr->attr.name, "hard_limit"))
 814                         new_op->upcall.req.param.op =
 815                                 ORANGEFS_PARAM_REQUEST_OP_ACACHE_HARD_LIMIT;
 816
 817                 if (!strcmp(acache_attr->attr.name, "soft_limit"))
 818                         new_op->upcall.req.param.op =
 819                                 ORANGEFS_PARAM_REQUEST_OP_ACACHE_SOFT_LIMIT;
 820
 821                 if (!strcmp(acache_attr->attr.name, "reclaim_percentage"))
 822                         new_op->upcall.req.param.op =
 823                           ORANGEFS_PARAM_REQUEST_OP_ACACHE_RECLAIM_PERCENTAGE;
 824
 825         } else if (!strcmp(kobj_id, CAPCACHE_KOBJ_ID)) {
 826                 capcache_attr = (struct capcache_orangefs_attribute *)attr;
 827
 828                 if (!strcmp(capcache_attr->attr.name, "timeout_secs"))
 829                         new_op->upcall.req.param.op =
 830                                 ORANGEFS_PARAM_REQUEST_OP_CAPCACHE_TIMEOUT_SECS;
 831
 832                 if (!strcmp(capcache_attr->attr.name, "hard_limit"))
 833                         new_op->upcall.req.param.op =
 834                                 ORANGEFS_PARAM_REQUEST_OP_CAPCACHE_HARD_LIMIT;
 835
 836                 if (!strcmp(capcache_attr->attr.name, "soft_limit"))
 837                         new_op->upcall.req.param.op =
 838                                 ORANGEFS_PARAM_REQUEST_OP_CAPCACHE_SOFT_LIMIT;
 839
 840                 if (!strcmp(capcache_attr->attr.name, "reclaim_percentage"))
 841                         new_op->upcall.req.param.op =
 842                           ORANGEFS_PARAM_REQUEST_OP_CAPCACHE_RECLAIM_PERCENTAGE;
 843
 844         } else if (!strcmp(kobj_id, CCACHE_KOBJ_ID)) {
 845                 ccache_attr = (struct ccache_orangefs_attribute *)attr;
 846
 847                 if (!strcmp(ccache_attr->attr.name, "timeout_secs"))
 848                         new_op->upcall.req.param.op =
 849                                 ORANGEFS_PARAM_REQUEST_OP_CCACHE_TIMEOUT_SECS;
 850
 851                 if (!strcmp(ccache_attr->attr.name, "hard_limit"))
 852                         new_op->upcall.req.param.op =
 853                                 ORANGEFS_PARAM_REQUEST_OP_CCACHE_HARD_LIMIT;
 854
 855                 if (!strcmp(ccache_attr->attr.name, "soft_limit"))
 856                         new_op->upcall.req.param.op =
 857                                 ORANGEFS_PARAM_REQUEST_OP_CCACHE_SOFT_LIMIT;
 858
 859                 if (!strcmp(ccache_attr->attr.name, "reclaim_percentage"))
 860                         new_op->upcall.req.param.op =
 861                           ORANGEFS_PARAM_REQUEST_OP_CCACHE_RECLAIM_PERCENTAGE;
 862
 863         } else if (!strcmp(kobj_id, NCACHE_KOBJ_ID)) {
 864                 ncache_attr = (struct ncache_orangefs_attribute *)attr;
 865
 866                 if (!strcmp(ncache_attr->attr.name, "timeout_msecs"))
 867                         new_op->upcall.req.param.op =
 868                                 ORANGEFS_PARAM_REQUEST_OP_NCACHE_TIMEOUT_MSECS;
 869
 870                 if (!strcmp(ncache_attr->attr.name, "hard_limit"))
 871                         new_op->upcall.req.param.op =
 872                                 ORANGEFS_PARAM_REQUEST_OP_NCACHE_HARD_LIMIT;
 873
 874                 if (!strcmp(ncache_attr->attr.name, "soft_limit"))
 875                         new_op->upcall.req.param.op =
 876                                 ORANGEFS_PARAM_REQUEST_OP_NCACHE_SOFT_LIMIT;
 877
 878                 if (!strcmp(ncache_attr->attr.name, "reclaim_percentage"))
 879                         new_op->upcall.req.param.op =
 880                           ORANGEFS_PARAM_REQUEST_OP_NCACHE_RECLAIM_PERCENTAGE;
 881
 882         } else if (!strcmp(kobj_id, PC_KOBJ_ID)) {
 883                 pc_attr = (struct pc_orangefs_attribute *)attr;
 884
 885                 if (!strcmp(pc_attr->attr.name, ACACHE_KOBJ_ID))
 886                         new_op->upcall.req.perf_count.type =
 887                                 ORANGEFS_PERF_COUNT_REQUEST_ACACHE;
 888
 889                 if (!strcmp(pc_attr->attr.name, CAPCACHE_KOBJ_ID))
 890                         new_op->upcall.req.perf_count.type =
 891                                 ORANGEFS_PERF_COUNT_REQUEST_CAPCACHE;
 892
 893                 if (!strcmp(pc_attr->attr.name, NCACHE_KOBJ_ID))
 894                         new_op->upcall.req.perf_count.type =
 895                                 ORANGEFS_PERF_COUNT_REQUEST_NCACHE;
 896
 897         } else {
 898                 gossip_err("sysfs_service_op_show: unknown kobj_id:%s:\n",
 899                            kobj_id);
 900                 rc = -EINVAL;
 901                 goto out;
 902         }
 903
 904
 905         if (strcmp(kobj_id, PC_KOBJ_ID))
 906                 ser_op_type = "orangefs_param";
 907         else
 908                 ser_op_type = "orangefs_perf_count";
 909
 910         /*
 911          * The service_operation will return an errno return code on
 912          * error, and zero on success.
 913          */
 914         rc = service_operation(new_op, ser_op_type, ORANGEFS_OP_INTERRUPTIBLE);
 915
 916 out:
 917         if (!rc) {
 918                 if (strcmp(kobj_id, PC_KOBJ_ID)) {
 919                         rc = scnprintf(buf,
 920                                        PAGE_SIZE,
 921                                        "%d\n",
 922                                        (int)new_op->downcall.resp.param.value);
 923                 } else {
 924                         rc = scnprintf(
 925                                 buf,
 926                                 PAGE_SIZE,
 927                                 "%s",
 928                                 new_op->downcall.resp.perf_count.buffer);
 929                 }
 930         }
 931
 932         op_release(new_op);
 933
 934         return rc;
 935
 936 }
 937
 938 static ssize_t service_orangefs_show(struct orangefs_obj *orangefs_obj,
 939                                      struct orangefs_attribute *attr,
 940                                      char *buf)
 941 {
 942         int rc = 0;
 943
 944         rc = sysfs_service_op_show(ORANGEFS_KOBJ_ID, buf, (void *)attr);
 945
 946         return rc;
 947 }
 948
 949 static ssize_t
 950         service_acache_show(struct acache_orangefs_obj *acache_orangefs_obj,
 951                             struct acache_orangefs_attribute *attr,
 952                             char *buf)
 953 {
 954         int rc = 0;
 955
 956         rc = sysfs_service_op_show(ACACHE_KOBJ_ID, buf, (void *)attr);
 957
 958         return rc;
 959 }
 960
 961 static ssize_t service_capcache_show(struct capcache_orangefs_obj
 962                                         *capcache_orangefs_obj,
 963                                      struct capcache_orangefs_attribute *attr,
 964                                      char *buf)
 965 {
 966         int rc = 0;
 967
 968         rc = sysfs_service_op_show(CAPCACHE_KOBJ_ID, buf, (void *)attr);
 969
 970         return rc;
 971 }
 972
 973 static ssize_t service_ccache_show(struct ccache_orangefs_obj
 974                                         *ccache_orangefs_obj,
 975                                    struct ccache_orangefs_attribute *attr,
 976                                    char *buf)
 977 {
 978         int rc = 0;
 979
 980         rc = sysfs_service_op_show(CCACHE_KOBJ_ID, buf, (void *)attr);
 981
 982         return rc;
 983 }
 984
 985 static ssize_t
 986         service_ncache_show(struct ncache_orangefs_obj *ncache_orangefs_obj,
 987                             struct ncache_orangefs_attribute *attr,
 988                             char *buf)
 989 {
 990         int rc = 0;
 991
 992         rc = sysfs_service_op_show(NCACHE_KOBJ_ID, buf, (void *)attr);
 993
 994         return rc;
 995 }
 996
 997 static ssize_t
 998         service_pc_show(struct pc_orangefs_obj *pc_orangefs_obj,
 999                             struct pc_orangefs_attribute *attr,
1000                             char *buf)
1001 {
1002         int rc = 0;
1003
1004         rc = sysfs_service_op_show(PC_KOBJ_ID, buf, (void *)attr);
1005
1006         return rc;
1007 }
1008
1009 /*
1010  * pass attribute values back to userspace with a service operation.
1011  *
1012  * We have to do a memory allocation, an sscanf and a service operation.
1013  * And we have to evaluate what the user entered, to make sure the
1014  * value is within the range supported by the attribute. So, there's
1015  * a lot of return code checking and mapping going on here.
1016  *
1017  * We want to return 1 if we think everything went OK, and
1018  * EINVAL if not.
1019  */
1020 static int sysfs_service_op_store(char *kobj_id, const char *buf, void *attr)
1021 {
1022         struct orangefs_kernel_op_s *new_op = NULL;
1023         int val = 0;
1024         int rc = 0;
1025         struct orangefs_attribute *orangefs_attr;
1026         struct acache_orangefs_attribute *acache_attr;
1027         struct capcache_orangefs_attribute *capcache_attr;
1028         struct ccache_orangefs_attribute *ccache_attr;
1029         struct ncache_orangefs_attribute *ncache_attr;
1030
1031         gossip_debug(GOSSIP_SYSFS_DEBUG,
1032                      "sysfs_service_op_store: id:%s:\n",
1033                      kobj_id);
1034
1035         new_op = op_alloc(ORANGEFS_VFS_OP_PARAM);
1036         if (!new_op)
1037                 return -EINVAL; /* sic */
1038
1039         /* Can't do a service_operation if the client is not running... */
1040         rc = is_daemon_in_service();
1041         if (rc) {
1042                 pr_info("%s: Client not running :%d:\n",
1043                         __func__,
1044                         is_daemon_in_service());
1045                 goto out;
1046         }
1047
1048         /*
1049          * The value we want to send back to userspace is in buf.
1050          */
1051         rc = kstrtoint(buf, 0, &val);
1052         if (rc)
1053                 goto out;
1054
1055         if (!strcmp(kobj_id, ORANGEFS_KOBJ_ID)) {
1056                 orangefs_attr = (struct orangefs_attribute *)attr;
1057
1058                 if (!strcmp(orangefs_attr->attr.name, "perf_history_size")) {
1059                         if (val > 0) {
1060                                 new_op->upcall.req.param.op =
1061                                   ORANGEFS_PARAM_REQUEST_OP_PERF_HISTORY_SIZE;
1062                         } else {
1063                                 rc = 0;
1064                                 goto out;
1065                         }
1066                 } else if (!strcmp(orangefs_attr->attr.name,
1067                                    "perf_time_interval_secs")) {
1068                         if (val > 0) {
1069                                 new_op->upcall.req.param.op =
1070                                 ORANGEFS_PARAM_REQUEST_OP_PERF_TIME_INTERVAL_SECS;
1071                         } else {
1072                                 rc = 0;
1073                                 goto out;
1074                         }
1075                 } else if (!strcmp(orangefs_attr->attr.name,
1076                                    "perf_counter_reset")) {
1077                         if ((val == 0) || (val == 1)) {
1078                                 new_op->upcall.req.param.op =
1079                                         ORANGEFS_PARAM_REQUEST_OP_PERF_RESET;
1080                         } else {
1081                                 rc = 0;
1082                                 goto out;
1083                         }
1084                 }
1085
1086         } else if (!strcmp(kobj_id, ACACHE_KOBJ_ID)) {
1087                 acache_attr = (struct acache_orangefs_attribute *)attr;
1088
1089                 if (!strcmp(acache_attr->attr.name, "hard_limit")) {
1090                         if (val > -1) {
1091                                 new_op->upcall.req.param.op =
1092                                   ORANGEFS_PARAM_REQUEST_OP_ACACHE_HARD_LIMIT;
1093                         } else {
1094                                 rc = 0;
1095                                 goto out;
1096                         }
1097                 } else if (!strcmp(acache_attr->attr.name, "soft_limit")) {
1098                         if (val > -1) {
1099                                 new_op->upcall.req.param.op =
1100                                   ORANGEFS_PARAM_REQUEST_OP_ACACHE_SOFT_LIMIT;
1101                         } else {
1102                                 rc = 0;
1103                                 goto out;
1104                         }
1105                 } else if (!strcmp(acache_attr->attr.name,
1106                                    "reclaim_percentage")) {
1107                         if ((val > -1) && (val < 101)) {
1108                                 new_op->upcall.req.param.op =
1109                                   ORANGEFS_PARAM_REQUEST_OP_ACACHE_RECLAIM_PERCENTAGE;
1110                         } else {
1111                                 rc = 0;
1112                                 goto out;
1113                         }
1114                 } else if (!strcmp(acache_attr->attr.name, "timeout_msecs")) {
1115                         if (val > -1) {
1116                                 new_op->upcall.req.param.op =
1117                                   ORANGEFS_PARAM_REQUEST_OP_ACACHE_TIMEOUT_MSECS;
1118                         } else {
1119                                 rc = 0;
1120                                 goto out;
1121                         }
1122                 }
1123
1124         } else if (!strcmp(kobj_id, CAPCACHE_KOBJ_ID)) {
1125                 capcache_attr = (struct capcache_orangefs_attribute *)attr;
1126
1127                 if (!strcmp(capcache_attr->attr.name, "hard_limit")) {
1128                         if (val > -1) {
1129                                 new_op->upcall.req.param.op =
1130                                   ORANGEFS_PARAM_REQUEST_OP_CAPCACHE_HARD_LIMIT;
1131                         } else {
1132                                 rc = 0;
1133                                 goto out;
1134                         }
1135                 } else if (!strcmp(capcache_attr->attr.name, "soft_limit")) {
1136                         if (val > -1) {
1137                                 new_op->upcall.req.param.op =
1138                                   ORANGEFS_PARAM_REQUEST_OP_CAPCACHE_SOFT_LIMIT;
1139                         } else {
1140                                 rc = 0;
1141                                 goto out;
1142                         }
1143                 } else if (!strcmp(capcache_attr->attr.name,
1144                                    "reclaim_percentage")) {
1145                         if ((val > -1) && (val < 101)) {
1146                                 new_op->upcall.req.param.op =
1147                                   ORANGEFS_PARAM_REQUEST_OP_CAPCACHE_RECLAIM_PERCENTAGE;
1148                         } else {
1149                                 rc = 0;
1150                                 goto out;
1151                         }
1152                 } else if (!strcmp(capcache_attr->attr.name, "timeout_secs")) {
1153                         if (val > -1) {
1154                                 new_op->upcall.req.param.op =
1155                                   ORANGEFS_PARAM_REQUEST_OP_CAPCACHE_TIMEOUT_SECS;
1156                         } else {
1157                                 rc = 0;
1158                                 goto out;
1159                         }
1160                 }
1161
1162         } else if (!strcmp(kobj_id, CCACHE_KOBJ_ID)) {
1163                 ccache_attr = (struct ccache_orangefs_attribute *)attr;
1164
1165                 if (!strcmp(ccache_attr->attr.name, "hard_limit")) {
1166                         if (val > -1) {
1167                                 new_op->upcall.req.param.op =
1168                                   ORANGEFS_PARAM_REQUEST_OP_CCACHE_HARD_LIMIT;
1169                         } else {
1170                                 rc = 0;
1171                                 goto out;
1172                         }
1173                 } else if (!strcmp(ccache_attr->attr.name, "soft_limit")) {
1174                         if (val > -1) {
1175                                 new_op->upcall.req.param.op =
1176                                   ORANGEFS_PARAM_REQUEST_OP_CCACHE_SOFT_LIMIT;
1177                         } else {
1178                                 rc = 0;
1179                                 goto out;
1180                         }
1181                 } else if (!strcmp(ccache_attr->attr.name,
1182                                    "reclaim_percentage")) {
1183                         if ((val > -1) && (val < 101)) {
1184                                 new_op->upcall.req.param.op =
1185                                   ORANGEFS_PARAM_REQUEST_OP_CCACHE_RECLAIM_PERCENTAGE;
1186                         } else {
1187                                 rc = 0;
1188                                 goto out;
1189                         }
1190                 } else if (!strcmp(ccache_attr->attr.name, "timeout_secs")) {
1191                         if (val > -1) {
1192                                 new_op->upcall.req.param.op =
1193                                   ORANGEFS_PARAM_REQUEST_OP_CCACHE_TIMEOUT_SECS;
1194                         } else {
1195                                 rc = 0;
1196                                 goto out;
1197                         }
1198                 }
1199
1200         } else if (!strcmp(kobj_id, NCACHE_KOBJ_ID)) {
1201                 ncache_attr = (struct ncache_orangefs_attribute *)attr;
1202
1203                 if (!strcmp(ncache_attr->attr.name, "hard_limit")) {
1204                         if (val > -1) {
1205                                 new_op->upcall.req.param.op =
1206                                   ORANGEFS_PARAM_REQUEST_OP_NCACHE_HARD_LIMIT;
1207                         } else {
1208                                 rc = 0;
1209                                 goto out;
1210                         }
1211                 } else if (!strcmp(ncache_attr->attr.name, "soft_limit")) {
1212                         if (val > -1) {
1213                                 new_op->upcall.req.param.op =
1214                                   ORANGEFS_PARAM_REQUEST_OP_NCACHE_SOFT_LIMIT;
1215                         } else {
1216                                 rc = 0;
1217                                 goto out;
1218                         }
1219                 } else if (!strcmp(ncache_attr->attr.name,
1220                                    "reclaim_percentage")) {
1221                         if ((val > -1) && (val < 101)) {
1222                                 new_op->upcall.req.param.op =
1223                                         ORANGEFS_PARAM_REQUEST_OP_NCACHE_RECLAIM_PERCENTAGE;
1224                         } else {
1225                                 rc = 0;
1226                                 goto out;
1227                         }
1228                 } else if (!strcmp(ncache_attr->attr.name, "timeout_msecs")) {
1229                         if (val > -1) {
1230                                 new_op->upcall.req.param.op =
1231                                   ORANGEFS_PARAM_REQUEST_OP_NCACHE_TIMEOUT_MSECS;
1232                         } else {
1233                                 rc = 0;
1234                                 goto out;
1235                         }
1236                 }
1237
1238         } else {
1239                 gossip_err("sysfs_service_op_store: unknown kobj_id:%s:\n",
1240                            kobj_id);
1241                 rc = -EINVAL;
1242                 goto out;
1243         }
1244
1245         new_op->upcall.req.param.type = ORANGEFS_PARAM_REQUEST_SET;
1246
1247         new_op->upcall.req.param.value = val;
1248
1249         /*
1250          * The service_operation will return a errno return code on
1251          * error, and zero on success.
1252          */
1253         rc = service_operation(new_op, "orangefs_param", ORANGEFS_OP_INTERRUPTIBLE);
1254
1255         if (rc < 0) {
1256                 gossip_err("sysfs_service_op_store: service op returned:%d:\n",
1257                         rc);
1258                 rc = 0;
1259         } else {
1260                 rc = 1;
1261         }
1262
1263 out:
1264         op_release(new_op);
1265
1266         if (rc == -ENOMEM || rc == 0)
1267                 rc = -EINVAL;
1268
1269         return rc;
1270 }
1271
1272 static ssize_t
1273         service_orangefs_store(struct orangefs_obj *orangefs_obj,
1274                                struct orangefs_attribute *attr,
1275                                const char *buf,
1276                                size_t count)
1277 {
1278         int rc = 0;
1279
1280         rc = sysfs_service_op_store(ORANGEFS_KOBJ_ID, buf, (void *) attr);
1281
1282         /* rc should have an errno value if the service_op went bad. */
1283         if (rc == 1)
1284                 rc = count;
1285
1286         return rc;
1287 }
1288
1289 static ssize_t
1290         service_acache_store(struct acache_orangefs_obj *acache_orangefs_obj,
1291                              struct acache_orangefs_attribute *attr,
1292                              const char *buf,
1293                              size_t count)
1294 {
1295         int rc = 0;
1296
1297         rc = sysfs_service_op_store(ACACHE_KOBJ_ID, buf, (void *) attr);
1298
1299         /* rc should have an errno value if the service_op went bad. */
1300         if (rc == 1)
1301                 rc = count;
1302
1303         return rc;
1304 }
1305
1306 static ssize_t
1307         service_capcache_store(struct capcache_orangefs_obj
1308                                 *capcache_orangefs_obj,
1309                                struct capcache_orangefs_attribute *attr,
1310                                const char *buf,
1311                                size_t count)
1312 {
1313         int rc = 0;
1314
1315         rc = sysfs_service_op_store(CAPCACHE_KOBJ_ID, buf, (void *) attr);
1316
1317         /* rc should have an errno value if the service_op went bad. */
1318         if (rc == 1)
1319                 rc = count;
1320
1321         return rc;
1322 }
1323
1324 static ssize_t service_ccache_store(struct ccache_orangefs_obj
1325                                         *ccache_orangefs_obj,
1326                                     struct ccache_orangefs_attribute *attr,
1327                                     const char *buf,
1328                                     size_t count)
1329 {
1330         int rc = 0;
1331
1332         rc = sysfs_service_op_store(CCACHE_KOBJ_ID, buf, (void *) attr);
1333
1334         /* rc should have an errno value if the service_op went bad. */
1335         if (rc == 1)
1336                 rc = count;
1337
1338         return rc;
1339 }
1340
1341 static ssize_t
1342         service_ncache_store(struct ncache_orangefs_obj *ncache_orangefs_obj,
1343                              struct ncache_orangefs_attribute *attr,
1344                              const char *buf,
1345                              size_t count)
1346 {
1347         int rc = 0;
1348
1349         rc = sysfs_service_op_store(NCACHE_KOBJ_ID, buf, (void *) attr);
1350
1351         /* rc should have an errno value if the service_op went bad. */
1352         if (rc == 1)
1353                 rc = count;
1354
1355         return rc;
1356 }
1357
1358 static struct orangefs_attribute op_timeout_secs_attribute =
1359         __ATTR(op_timeout_secs, 0664, int_orangefs_show, int_store);
1360
1361 static struct orangefs_attribute slot_timeout_secs_attribute =
1362         __ATTR(slot_timeout_secs, 0664, int_orangefs_show, int_store);
1363
1364 static struct orangefs_attribute perf_counter_reset_attribute =
1365         __ATTR(perf_counter_reset,
1366                0664,
1367                service_orangefs_show,
1368                service_orangefs_store);
1369
1370 static struct orangefs_attribute perf_history_size_attribute =
1371         __ATTR(perf_history_size,
1372                0664,
1373                service_orangefs_show,
1374                service_orangefs_store);
1375
1376 static struct orangefs_attribute perf_time_interval_secs_attribute =
1377         __ATTR(perf_time_interval_secs,
1378                0664,
1379                service_orangefs_show,
1380                service_orangefs_store);
1381
1382 static struct attribute *orangefs_default_attrs[] = {
1383         &op_timeout_secs_attribute.attr,
1384         &slot_timeout_secs_attribute.attr,
1385         &perf_counter_reset_attribute.attr,
1386         &perf_history_size_attribute.attr,
1387         &perf_time_interval_secs_attribute.attr,
1388         NULL,
1389 };
1390
1391 static struct kobj_type orangefs_ktype = {
1392         .sysfs_ops = &orangefs_sysfs_ops,
1393         .release = orangefs_release,
1394         .default_attrs = orangefs_default_attrs,
1395 };
1396
1397 static struct acache_orangefs_attribute acache_hard_limit_attribute =
1398         __ATTR(hard_limit,
1399                0664,
1400                service_acache_show,
1401                service_acache_store);
1402
1403 static struct acache_orangefs_attribute acache_reclaim_percent_attribute =
1404         __ATTR(reclaim_percentage,
1405                0664,
1406                service_acache_show,
1407                service_acache_store);
1408
1409 static struct acache_orangefs_attribute acache_soft_limit_attribute =
1410         __ATTR(soft_limit,
1411                0664,
1412                service_acache_show,
1413                service_acache_store);
1414
1415 static struct acache_orangefs_attribute acache_timeout_msecs_attribute =
1416         __ATTR(timeout_msecs,
1417                0664,
1418                service_acache_show,
1419                service_acache_store);
1420
1421 static struct attribute *acache_orangefs_default_attrs[] = {
1422         &acache_hard_limit_attribute.attr,
1423         &acache_reclaim_percent_attribute.attr,
1424         &acache_soft_limit_attribute.attr,
1425         &acache_timeout_msecs_attribute.attr,
1426         NULL,
1427 };
1428
1429 static struct kobj_type acache_orangefs_ktype = {
1430         .sysfs_ops = &acache_orangefs_sysfs_ops,
1431         .release = acache_orangefs_release,
1432         .default_attrs = acache_orangefs_default_attrs,
1433 };
1434
1435 static struct capcache_orangefs_attribute capcache_hard_limit_attribute =
1436         __ATTR(hard_limit,
1437                0664,
1438                service_capcache_show,
1439                service_capcache_store);
1440
1441 static struct capcache_orangefs_attribute capcache_reclaim_percent_attribute =
1442         __ATTR(reclaim_percentage,
1443                0664,
1444                service_capcache_show,
1445                service_capcache_store);
1446
1447 static struct capcache_orangefs_attribute capcache_soft_limit_attribute =
1448         __ATTR(soft_limit,
1449                0664,
1450                service_capcache_show,
1451                service_capcache_store);
1452
1453 static struct capcache_orangefs_attribute capcache_timeout_secs_attribute =
1454         __ATTR(timeout_secs,
1455                0664,
1456                service_capcache_show,
1457                service_capcache_store);
1458
1459 static struct attribute *capcache_orangefs_default_attrs[] = {
1460         &capcache_hard_limit_attribute.attr,
1461         &capcache_reclaim_percent_attribute.attr,
1462         &capcache_soft_limit_attribute.attr,
1463         &capcache_timeout_secs_attribute.attr,
1464         NULL,
1465 };
1466
1467 static struct kobj_type capcache_orangefs_ktype = {
1468         .sysfs_ops = &capcache_orangefs_sysfs_ops,
1469         .release = capcache_orangefs_release,
1470         .default_attrs = capcache_orangefs_default_attrs,
1471 };
1472
1473 static struct ccache_orangefs_attribute ccache_hard_limit_attribute =
1474         __ATTR(hard_limit,
1475                0664,
1476                service_ccache_show,
1477                service_ccache_store);
1478
1479 static struct ccache_orangefs_attribute ccache_reclaim_percent_attribute =
1480         __ATTR(reclaim_percentage,
1481                0664,
1482                service_ccache_show,
1483                service_ccache_store);
1484
1485 static struct ccache_orangefs_attribute ccache_soft_limit_attribute =
1486         __ATTR(soft_limit,
1487                0664,
1488                service_ccache_show,
1489                service_ccache_store);
1490
1491 static struct ccache_orangefs_attribute ccache_timeout_secs_attribute =
1492         __ATTR(timeout_secs,
1493                0664,
1494                service_ccache_show,
1495                service_ccache_store);
1496
1497 static struct attribute *ccache_orangefs_default_attrs[] = {
1498         &ccache_hard_limit_attribute.attr,
1499         &ccache_reclaim_percent_attribute.attr,
1500         &ccache_soft_limit_attribute.attr,
1501         &ccache_timeout_secs_attribute.attr,
1502         NULL,
1503 };
1504
1505 static struct kobj_type ccache_orangefs_ktype = {
1506         .sysfs_ops = &ccache_orangefs_sysfs_ops,
1507         .release = ccache_orangefs_release,
1508         .default_attrs = ccache_orangefs_default_attrs,
1509 };
1510
1511 static struct ncache_orangefs_attribute ncache_hard_limit_attribute =
1512         __ATTR(hard_limit,
1513                0664,
1514                service_ncache_show,
1515                service_ncache_store);
1516
1517 static struct ncache_orangefs_attribute ncache_reclaim_percent_attribute =
1518         __ATTR(reclaim_percentage,
1519                0664,
1520                service_ncache_show,
1521                service_ncache_store);
1522
1523 static struct ncache_orangefs_attribute ncache_soft_limit_attribute =
1524         __ATTR(soft_limit,
1525                0664,
1526                service_ncache_show,
1527                service_ncache_store);
1528
1529 static struct ncache_orangefs_attribute ncache_timeout_msecs_attribute =
1530         __ATTR(timeout_msecs,
1531                0664,
1532                service_ncache_show,
1533                service_ncache_store);
1534
1535 static struct attribute *ncache_orangefs_default_attrs[] = {
1536         &ncache_hard_limit_attribute.attr,
1537         &ncache_reclaim_percent_attribute.attr,
1538         &ncache_soft_limit_attribute.attr,
1539         &ncache_timeout_msecs_attribute.attr,
1540         NULL,
1541 };
1542
1543 static struct kobj_type ncache_orangefs_ktype = {
1544         .sysfs_ops = &ncache_orangefs_sysfs_ops,
1545         .release = ncache_orangefs_release,
1546         .default_attrs = ncache_orangefs_default_attrs,
1547 };
1548
1549 static struct pc_orangefs_attribute pc_acache_attribute =
1550         __ATTR(acache,
1551                0664,
1552                service_pc_show,
1553                NULL);
1554
1555 static struct pc_orangefs_attribute pc_capcache_attribute =
1556         __ATTR(capcache,
1557                0664,
1558                service_pc_show,
1559                NULL);
1560
1561 static struct pc_orangefs_attribute pc_ncache_attribute =
1562         __ATTR(ncache,
1563                0664,
1564                service_pc_show,
1565                NULL);
1566
1567 static struct attribute *pc_orangefs_default_attrs[] = {
1568         &pc_acache_attribute.attr,
1569         &pc_capcache_attribute.attr,
1570         &pc_ncache_attribute.attr,
1571         NULL,
1572 };
1573
1574 static struct kobj_type pc_orangefs_ktype = {
1575         .sysfs_ops = &pc_orangefs_sysfs_ops,
1576         .release = pc_orangefs_release,
1577         .default_attrs = pc_orangefs_default_attrs,
1578 };
1579
1580 static struct stats_orangefs_attribute stats_reads_attribute =
1581         __ATTR(reads,
1582                0664,
1583                int_stats_show,
1584                NULL);
1585
1586 static struct stats_orangefs_attribute stats_writes_attribute =
1587         __ATTR(writes,
1588                0664,
1589                int_stats_show,
1590                NULL);
1591
1592 static struct attribute *stats_orangefs_default_attrs[] = {
1593         &stats_reads_attribute.attr,
1594         &stats_writes_attribute.attr,
1595         NULL,
1596 };
1597
1598 static struct kobj_type stats_orangefs_ktype = {
1599         .sysfs_ops = &stats_orangefs_sysfs_ops,
1600         .release = stats_orangefs_release,
1601         .default_attrs = stats_orangefs_default_attrs,
1602 };
1603
1604 static struct orangefs_obj *orangefs_obj;
1605 static struct acache_orangefs_obj *acache_orangefs_obj;
1606 static struct capcache_orangefs_obj *capcache_orangefs_obj;
1607 static struct ccache_orangefs_obj *ccache_orangefs_obj;
1608 static struct ncache_orangefs_obj *ncache_orangefs_obj;
1609 static struct pc_orangefs_obj *pc_orangefs_obj;
1610 static struct stats_orangefs_obj *stats_orangefs_obj;
1611
1612 int orangefs_sysfs_init(void)
1613 {
1614         int rc = -EINVAL;
1615
1616         gossip_debug(GOSSIP_SYSFS_DEBUG, "orangefs_sysfs_init: start\n");
1617
1618         /* create /sys/fs/orangefs. */
1619         orangefs_obj = kzalloc(sizeof(*orangefs_obj), GFP_KERNEL);
1620         if (!orangefs_obj)
1621                 goto out;
1622
1623         rc = kobject_init_and_add(&orangefs_obj->kobj,
1624                                   &orangefs_ktype,
1625                                   fs_kobj,
1626                                   ORANGEFS_KOBJ_ID);
1627
1628         if (rc)
1629                 goto ofs_obj_bail;
1630
1631         kobject_uevent(&orangefs_obj->kobj, KOBJ_ADD);
1632
1633         /* create /sys/fs/orangefs/acache. */
1634         acache_orangefs_obj = kzalloc(sizeof(*acache_orangefs_obj), GFP_KERNEL);
1635         if (!acache_orangefs_obj) {
1636                 rc = -EINVAL;
1637                 goto ofs_obj_bail;
1638         }
1639
1640         rc = kobject_init_and_add(&acache_orangefs_obj->kobj,
1641                                   &acache_orangefs_ktype,
1642                                   &orangefs_obj->kobj,
1643                                   ACACHE_KOBJ_ID);
1644
1645         if (rc)
1646                 goto acache_obj_bail;
1647
1648         kobject_uevent(&acache_orangefs_obj->kobj, KOBJ_ADD);
1649
1650         /* create /sys/fs/orangefs/capcache. */
1651         capcache_orangefs_obj =
1652                 kzalloc(sizeof(*capcache_orangefs_obj), GFP_KERNEL);
1653         if (!capcache_orangefs_obj) {
1654                 rc = -EINVAL;
1655                 goto acache_obj_bail;
1656         }
1657
1658         rc = kobject_init_and_add(&capcache_orangefs_obj->kobj,
1659                                   &capcache_orangefs_ktype,
1660                                   &orangefs_obj->kobj,
1661                                   CAPCACHE_KOBJ_ID);
1662         if (rc)
1663                 goto capcache_obj_bail;
1664
1665         kobject_uevent(&capcache_orangefs_obj->kobj, KOBJ_ADD);
1666
1667         /* create /sys/fs/orangefs/ccache. */
1668         ccache_orangefs_obj =
1669                 kzalloc(sizeof(*ccache_orangefs_obj), GFP_KERNEL);
1670         if (!ccache_orangefs_obj) {
1671                 rc = -EINVAL;
1672                 goto capcache_obj_bail;
1673         }
1674
1675         rc = kobject_init_and_add(&ccache_orangefs_obj->kobj,
1676                                   &ccache_orangefs_ktype,
1677                                   &orangefs_obj->kobj,
1678                                   CCACHE_KOBJ_ID);
1679         if (rc)
1680                 goto ccache_obj_bail;
1681
1682         kobject_uevent(&ccache_orangefs_obj->kobj, KOBJ_ADD);
1683
1684         /* create /sys/fs/orangefs/ncache. */
1685         ncache_orangefs_obj = kzalloc(sizeof(*ncache_orangefs_obj), GFP_KERNEL);
1686         if (!ncache_orangefs_obj) {
1687                 rc = -EINVAL;
1688                 goto ccache_obj_bail;
1689         }
1690
1691         rc = kobject_init_and_add(&ncache_orangefs_obj->kobj,
1692                                   &ncache_orangefs_ktype,
1693                                   &orangefs_obj->kobj,
1694                                   NCACHE_KOBJ_ID);
1695
1696         if (rc)
1697                 goto ncache_obj_bail;
1698
1699         kobject_uevent(&ncache_orangefs_obj->kobj, KOBJ_ADD);
1700
1701         /* create /sys/fs/orangefs/perf_counters. */
1702         pc_orangefs_obj = kzalloc(sizeof(*pc_orangefs_obj), GFP_KERNEL);
1703         if (!pc_orangefs_obj) {
1704                 rc = -EINVAL;
1705                 goto ncache_obj_bail;
1706         }
1707
1708         rc = kobject_init_and_add(&pc_orangefs_obj->kobj,
1709                                   &pc_orangefs_ktype,
1710                                   &orangefs_obj->kobj,
1711                                   "perf_counters");
1712
1713         if (rc)
1714                 goto pc_obj_bail;
1715
1716         kobject_uevent(&pc_orangefs_obj->kobj, KOBJ_ADD);
1717
1718         /* create /sys/fs/orangefs/stats. */
1719         stats_orangefs_obj = kzalloc(sizeof(*stats_orangefs_obj), GFP_KERNEL);
1720         if (!stats_orangefs_obj) {
1721                 rc = -EINVAL;
1722                 goto pc_obj_bail;
1723         }
1724
1725         rc = kobject_init_and_add(&stats_orangefs_obj->kobj,
1726                                   &stats_orangefs_ktype,
1727                                   &orangefs_obj->kobj,
1728                                   STATS_KOBJ_ID);
1729
1730         if (rc)
1731                 goto stats_obj_bail;
1732
1733         kobject_uevent(&stats_orangefs_obj->kobj, KOBJ_ADD);
1734         goto out;
1735
1736 stats_obj_bail:
1737                 kobject_put(&stats_orangefs_obj->kobj);
1738
1739 pc_obj_bail:
1740                 kobject_put(&pc_orangefs_obj->kobj);
1741
1742 ncache_obj_bail:
1743                 kobject_put(&ncache_orangefs_obj->kobj);
1744
1745 ccache_obj_bail:
1746                 kobject_put(&ccache_orangefs_obj->kobj);
1747
1748 capcache_obj_bail:
1749                 kobject_put(&capcache_orangefs_obj->kobj);
1750
1751 acache_obj_bail:
1752                 kobject_put(&acache_orangefs_obj->kobj);
1753
1754 ofs_obj_bail:
1755                 kobject_put(&orangefs_obj->kobj);
1756 out:
1757         return rc;
1758 }
1759
1760 void orangefs_sysfs_exit(void)
1761 {
1762         gossip_debug(GOSSIP_SYSFS_DEBUG, "orangefs_sysfs_exit: start\n");
1763
1764         kobject_put(&acache_orangefs_obj->kobj);
1765         kobject_put(&capcache_orangefs_obj->kobj);
1766         kobject_put(&ccache_orangefs_obj->kobj);
1767         kobject_put(&ncache_orangefs_obj->kobj);
1768         kobject_put(&pc_orangefs_obj->kobj);
1769         kobject_put(&stats_orangefs_obj->kobj);
1770
1771         kobject_put(&orangefs_obj->kobj);
1772 }