Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 | /*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 only,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is included
* in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
* http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
/*
* Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2011, 2015, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*/
#define DEBUG_SUBSYSTEM S_CLASS
# include <linux/atomic.h>
#include "../include/obd_support.h"
#include "../include/obd_class.h"
#include "../../include/linux/lnet/lnetctl.h"
#include "../include/lustre_debug.h"
#include "../include/lprocfs_status.h"
#include <linux/list.h>
#include "../include/cl_object.h"
#include "../include/lustre/lustre_ioctl.h"
#include "llog_internal.h"
struct obd_device *obd_devs[MAX_OBD_DEVICES];
struct list_head obd_types;
DEFINE_RWLOCK(obd_dev_lock);
/* The following are visible and mutable through /sys/fs/lustre. */
unsigned int obd_debug_peer_on_timeout;
EXPORT_SYMBOL(obd_debug_peer_on_timeout);
unsigned int obd_dump_on_timeout;
EXPORT_SYMBOL(obd_dump_on_timeout);
unsigned int obd_dump_on_eviction;
EXPORT_SYMBOL(obd_dump_on_eviction);
unsigned long obd_max_dirty_pages;
EXPORT_SYMBOL(obd_max_dirty_pages);
atomic_long_t obd_dirty_pages;
EXPORT_SYMBOL(obd_dirty_pages);
unsigned int obd_timeout = OBD_TIMEOUT_DEFAULT; /* seconds */
EXPORT_SYMBOL(obd_timeout);
unsigned int obd_timeout_set;
EXPORT_SYMBOL(obd_timeout_set);
/* Adaptive timeout defs here instead of ptlrpc module for /sys/fs/ access */
unsigned int at_min;
EXPORT_SYMBOL(at_min);
unsigned int at_max = 600;
EXPORT_SYMBOL(at_max);
unsigned int at_history = 600;
EXPORT_SYMBOL(at_history);
int at_early_margin = 5;
EXPORT_SYMBOL(at_early_margin);
int at_extra = 30;
EXPORT_SYMBOL(at_extra);
atomic_long_t obd_dirty_transit_pages;
EXPORT_SYMBOL(obd_dirty_transit_pages);
char obd_jobid_var[JOBSTATS_JOBID_VAR_MAX_LEN + 1] = JOBSTATS_DISABLE;
char obd_jobid_node[LUSTRE_JOBID_SIZE + 1];
/* Get jobid of current process from stored variable or calculate
* it from pid and user_id.
*
* Historically this was also done by reading the environment variable
* stored in between the "env_start" & "env_end" of task struct.
* This is now deprecated.
*/
int lustre_get_jobid(char *jobid)
{
memset(jobid, 0, LUSTRE_JOBID_SIZE);
/* Jobstats isn't enabled */
if (strcmp(obd_jobid_var, JOBSTATS_DISABLE) == 0)
return 0;
/* Use process name + fsuid as jobid */
if (strcmp(obd_jobid_var, JOBSTATS_PROCNAME_UID) == 0) {
snprintf(jobid, LUSTRE_JOBID_SIZE, "%s.%u",
current_comm(),
from_kuid(&init_user_ns, current_fsuid()));
return 0;
}
/* Whole node dedicated to single job */
if (strcmp(obd_jobid_var, JOBSTATS_NODELOCAL) == 0) {
strcpy(jobid, obd_jobid_node);
return 0;
}
return -ENOENT;
}
EXPORT_SYMBOL(lustre_get_jobid);
static int class_resolve_dev_name(__u32 len, const char *name)
{
int rc;
int dev;
if (!len || !name) {
CERROR("No name passed,!\n");
rc = -EINVAL;
goto out;
}
if (name[len - 1] != 0) {
CERROR("Name not nul terminated!\n");
rc = -EINVAL;
goto out;
}
CDEBUG(D_IOCTL, "device name %s\n", name);
dev = class_name2dev(name);
if (dev == -1) {
CDEBUG(D_IOCTL, "No device for name %s!\n", name);
rc = -EINVAL;
goto out;
}
CDEBUG(D_IOCTL, "device name %s, dev %d\n", name, dev);
rc = dev;
out:
return rc;
}
int class_handle_ioctl(unsigned int cmd, unsigned long arg)
{
char *buf = NULL;
struct obd_ioctl_data *data;
struct libcfs_debug_ioctl_data *debug_data;
struct obd_device *obd = NULL;
int err = 0, len = 0;
/* only for debugging */
if (cmd == LIBCFS_IOC_DEBUG_MASK) {
debug_data = (struct libcfs_debug_ioctl_data *)arg;
libcfs_subsystem_debug = debug_data->subs;
libcfs_debug = debug_data->debug;
return 0;
}
CDEBUG(D_IOCTL, "cmd = %x\n", cmd);
if (obd_ioctl_getdata(&buf, &len, (void __user *)arg)) {
CERROR("OBD ioctl: data error\n");
return -EINVAL;
}
data = (struct obd_ioctl_data *)buf;
switch (cmd) {
case OBD_IOC_PROCESS_CFG: {
struct lustre_cfg *lcfg;
if (!data->ioc_plen1 || !data->ioc_pbuf1) {
CERROR("No config buffer passed!\n");
err = -EINVAL;
goto out;
}
lcfg = kzalloc(data->ioc_plen1, GFP_NOFS);
if (!lcfg) {
err = -ENOMEM;
goto out;
}
err = copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1);
if (!err)
err = lustre_cfg_sanity_check(lcfg, data->ioc_plen1);
if (!err)
err = class_process_config(lcfg);
kfree(lcfg);
goto out;
}
case OBD_GET_VERSION:
if (!data->ioc_inlbuf1) {
CERROR("No buffer passed in ioctl\n");
err = -EINVAL;
goto out;
}
if (strlen(LUSTRE_VERSION_STRING) + 1 > data->ioc_inllen1) {
CERROR("ioctl buffer too small to hold version\n");
err = -EINVAL;
goto out;
}
memcpy(data->ioc_bulk, LUSTRE_VERSION_STRING,
strlen(LUSTRE_VERSION_STRING) + 1);
err = obd_ioctl_popdata((void __user *)arg, data, len);
if (err)
err = -EFAULT;
goto out;
case OBD_IOC_NAME2DEV: {
/* Resolve a device name. This does not change the
* currently selected device.
*/
int dev;
dev = class_resolve_dev_name(data->ioc_inllen1,
data->ioc_inlbuf1);
data->ioc_dev = dev;
if (dev < 0) {
err = -EINVAL;
goto out;
}
err = obd_ioctl_popdata((void __user *)arg, data,
sizeof(*data));
if (err)
err = -EFAULT;
goto out;
}
case OBD_IOC_UUID2DEV: {
/* Resolve a device uuid. This does not change the
* currently selected device.
*/
int dev;
struct obd_uuid uuid;
if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
CERROR("No UUID passed!\n");
err = -EINVAL;
goto out;
}
if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
CERROR("UUID not NUL terminated!\n");
err = -EINVAL;
goto out;
}
CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1);
obd_str2uuid(&uuid, data->ioc_inlbuf1);
dev = class_uuid2dev(&uuid);
data->ioc_dev = dev;
if (dev == -1) {
CDEBUG(D_IOCTL, "No device for UUID %s!\n",
data->ioc_inlbuf1);
err = -EINVAL;
goto out;
}
CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1,
dev);
err = obd_ioctl_popdata((void __user *)arg, data,
sizeof(*data));
if (err)
err = -EFAULT;
goto out;
}
case OBD_IOC_GETDEVICE: {
int index = data->ioc_count;
char *status, *str;
if (!data->ioc_inlbuf1) {
CERROR("No buffer passed in ioctl\n");
err = -EINVAL;
goto out;
}
if (data->ioc_inllen1 < 128) {
CERROR("ioctl buffer too small to hold version\n");
err = -EINVAL;
goto out;
}
obd = class_num2obd(index);
if (!obd) {
err = -ENOENT;
goto out;
}
if (obd->obd_stopping)
status = "ST";
else if (obd->obd_set_up)
status = "UP";
else if (obd->obd_attached)
status = "AT";
else
status = "--";
str = (char *)data->ioc_bulk;
snprintf(str, len - sizeof(*data), "%3d %s %s %s %s %d",
(int)index, status, obd->obd_type->typ_name,
obd->obd_name, obd->obd_uuid.uuid,
atomic_read(&obd->obd_refcount));
err = obd_ioctl_popdata((void __user *)arg, data, len);
err = 0;
goto out;
}
}
if (data->ioc_dev == OBD_DEV_BY_DEVNAME) {
if (data->ioc_inllen4 <= 0 || !data->ioc_inlbuf4) {
err = -EINVAL;
goto out;
}
if (strnlen(data->ioc_inlbuf4, MAX_OBD_NAME) >= MAX_OBD_NAME) {
err = -EINVAL;
goto out;
}
obd = class_name2obd(data->ioc_inlbuf4);
} else if (data->ioc_dev < class_devno_max()) {
obd = class_num2obd(data->ioc_dev);
} else {
CERROR("OBD ioctl: No device\n");
err = -EINVAL;
goto out;
}
if (!obd) {
CERROR("OBD ioctl : No Device %d\n", data->ioc_dev);
err = -EINVAL;
goto out;
}
LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
if (!obd->obd_set_up || obd->obd_stopping) {
CERROR("OBD ioctl: device not setup %d\n", data->ioc_dev);
err = -EINVAL;
goto out;
}
switch (cmd) {
case OBD_IOC_NO_TRANSNO: {
if (!obd->obd_attached) {
CERROR("Device %d not attached\n", obd->obd_minor);
err = -ENODEV;
goto out;
}
CDEBUG(D_HA, "%s: disabling committed-transno notification\n",
obd->obd_name);
obd->obd_no_transno = 1;
err = 0;
goto out;
}
default: {
err = obd_iocontrol(cmd, obd->obd_self_export, len, data, NULL);
if (err)
goto out;
err = obd_ioctl_popdata((void __user *)arg, data, len);
if (err)
err = -EFAULT;
goto out;
}
}
out:
if (buf)
obd_ioctl_freedata(buf, len);
return err;
} /* class_handle_ioctl */
#define OBD_INIT_CHECK
static int obd_init_checks(void)
{
__u64 u64val, div64val;
char buf[64];
int len, ret = 0;
CDEBUG(D_INFO, "LPU64=%s, LPD64=%s, LPX64=%s\n", "%llu", "%lld", "%#llx");
CDEBUG(D_INFO, "OBD_OBJECT_EOF = %#llx\n", (__u64)OBD_OBJECT_EOF);
u64val = OBD_OBJECT_EOF;
CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = %#llx\n", u64val);
if (u64val != OBD_OBJECT_EOF) {
CERROR("__u64 %#llx(%d) != 0xffffffffffffffff\n",
u64val, (int)sizeof(u64val));
ret = -EINVAL;
}
len = snprintf(buf, sizeof(buf), "%#llx", u64val);
if (len != 18) {
CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
ret = -EINVAL;
}
div64val = OBD_OBJECT_EOF;
CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = %#llx\n", u64val);
if (u64val != OBD_OBJECT_EOF) {
CERROR("__u64 %#llx(%d) != 0xffffffffffffffff\n",
u64val, (int)sizeof(u64val));
ret = -EOVERFLOW;
}
if (u64val >> 8 != OBD_OBJECT_EOF >> 8) {
CERROR("__u64 %#llx(%d) != 0xffffffffffffffff\n",
u64val, (int)sizeof(u64val));
return -EOVERFLOW;
}
if (do_div(div64val, 256) != (u64val & 255)) {
CERROR("do_div(%#llx,256) != %llu\n", u64val, u64val & 255);
return -EOVERFLOW;
}
if (u64val >> 8 != div64val) {
CERROR("do_div(%#llx,256) %llu != %llu\n",
u64val, div64val, u64val >> 8);
return -EOVERFLOW;
}
len = snprintf(buf, sizeof(buf), "%#llx", u64val);
if (len != 18) {
CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
ret = -EINVAL;
}
len = snprintf(buf, sizeof(buf), "%llu", u64val);
if (len != 20) {
CWARN("LPU64 wrong length! strlen(%s)=%d != 20\n", buf, len);
ret = -EINVAL;
}
len = snprintf(buf, sizeof(buf), "%lld", u64val);
if (len != 2) {
CWARN("LPD64 wrong length! strlen(%s)=%d != 2\n", buf, len);
ret = -EINVAL;
}
if ((u64val & ~PAGE_MASK) >= PAGE_SIZE) {
CWARN("mask failed: u64val %llu >= %llu\n", u64val,
(__u64)PAGE_SIZE);
ret = -EINVAL;
}
return ret;
}
static int __init obdclass_init(void)
{
int i, err;
LCONSOLE_INFO("Lustre: Build Version: " LUSTRE_VERSION_STRING "\n");
spin_lock_init(&obd_types_lock);
obd_zombie_impexp_init();
err = obd_init_checks();
if (err == -EOVERFLOW)
return err;
class_init_uuidlist();
err = class_handle_init();
if (err)
return err;
INIT_LIST_HEAD(&obd_types);
err = misc_register(&obd_psdev);
if (err) {
CERROR("cannot register %d err %d\n", OBD_DEV_MINOR, err);
return err;
}
/* This struct is already zeroed for us (static global) */
for (i = 0; i < class_devno_max(); i++)
obd_devs[i] = NULL;
/* Default the dirty page cache cap to 1/2 of system memory.
* For clients with less memory, a larger fraction is needed
* for other purposes (mostly for BGL).
*/
if (totalram_pages <= 512 << (20 - PAGE_SHIFT))
obd_max_dirty_pages = totalram_pages / 4;
else
obd_max_dirty_pages = totalram_pages / 2;
err = obd_init_caches();
if (err)
return err;
err = class_procfs_init();
if (err)
return err;
err = obd_sysctl_init();
if (err)
return err;
err = lu_global_init();
if (err)
return err;
err = cl_global_init();
if (err != 0)
return err;
err = llog_info_init();
if (err)
return err;
err = lustre_register_fs();
return err;
}
static void obdclass_exit(void)
{
lustre_unregister_fs();
misc_deregister(&obd_psdev);
llog_info_fini();
cl_global_fini();
lu_global_fini();
obd_cleanup_caches();
class_procfs_clean();
class_handle_cleanup();
class_exit_uuidlist();
obd_zombie_impexp_stop();
}
MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
MODULE_DESCRIPTION("Lustre Class Driver");
MODULE_VERSION(LUSTRE_VERSION_STRING);
MODULE_LICENSE("GPL");
module_init(obdclass_init);
module_exit(obdclass_exit);
|