]>
Commit | Line | Data |
---|---|---|
d7e09d03 PT |
1 | /* |
2 | * GPL HEADER START | |
3 | * | |
4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 only, | |
8 | * as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License version 2 for more details (a copy is included | |
14 | * in the LICENSE file that accompanied this code). | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * version 2 along with this program; If not, see | |
18 | * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf | |
19 | * | |
20 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
21 | * CA 95054 USA or visit www.sun.com if you need additional information or | |
22 | * have any questions. | |
23 | * | |
24 | * GPL HEADER END | |
25 | */ | |
26 | /* | |
27 | * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. | |
28 | * Use is subject to license terms. | |
29 | * | |
1dc563a6 | 30 | * Copyright (c) 2011, 2015, Intel Corporation. |
d7e09d03 PT |
31 | */ |
32 | /* | |
33 | * This file is part of Lustre, http://www.lustre.org/ | |
34 | * Lustre is a trademark of Sun Microsystems, Inc. | |
35 | */ | |
36 | ||
37 | #define DEBUG_SUBSYSTEM S_CLASS | |
e409842a | 38 | # include <linux/atomic.h> |
d7e09d03 | 39 | |
610f7377 GKH |
40 | #include "../include/obd_support.h" |
41 | #include "../include/obd_class.h" | |
9fdaf8c0 | 42 | #include "../../include/linux/lnet/lnetctl.h" |
610f7377 GKH |
43 | #include "../include/lustre_debug.h" |
44 | #include "../include/lprocfs_status.h" | |
d7e09d03 | 45 | #include <linux/list.h> |
610f7377 | 46 | #include "../include/cl_object.h" |
d7e09d03 PT |
47 | #include "llog_internal.h" |
48 | ||
d7e09d03 PT |
49 | struct obd_device *obd_devs[MAX_OBD_DEVICES]; |
50 | EXPORT_SYMBOL(obd_devs); | |
51 | struct list_head obd_types; | |
52 | DEFINE_RWLOCK(obd_dev_lock); | |
53 | ||
406c1c7c | 54 | /* The following are visible and mutable through /sys/fs/lustre. */ |
d7e09d03 PT |
55 | unsigned int obd_debug_peer_on_timeout; |
56 | EXPORT_SYMBOL(obd_debug_peer_on_timeout); | |
57 | unsigned int obd_dump_on_timeout; | |
58 | EXPORT_SYMBOL(obd_dump_on_timeout); | |
59 | unsigned int obd_dump_on_eviction; | |
60 | EXPORT_SYMBOL(obd_dump_on_eviction); | |
61 | unsigned int obd_max_dirty_pages = 256; | |
62 | EXPORT_SYMBOL(obd_max_dirty_pages); | |
d7e09d03 PT |
63 | atomic_t obd_dirty_pages; |
64 | EXPORT_SYMBOL(obd_dirty_pages); | |
65 | unsigned int obd_timeout = OBD_TIMEOUT_DEFAULT; /* seconds */ | |
66 | EXPORT_SYMBOL(obd_timeout); | |
d7e09d03 PT |
67 | unsigned int obd_timeout_set; |
68 | EXPORT_SYMBOL(obd_timeout_set); | |
406c1c7c | 69 | /* Adaptive timeout defs here instead of ptlrpc module for /sys/fs/ access */ |
ea28d21a | 70 | unsigned int at_min; |
d7e09d03 PT |
71 | EXPORT_SYMBOL(at_min); |
72 | unsigned int at_max = 600; | |
73 | EXPORT_SYMBOL(at_max); | |
74 | unsigned int at_history = 600; | |
75 | EXPORT_SYMBOL(at_history); | |
76 | int at_early_margin = 5; | |
77 | EXPORT_SYMBOL(at_early_margin); | |
78 | int at_extra = 30; | |
79 | EXPORT_SYMBOL(at_extra); | |
80 | ||
81 | atomic_t obd_dirty_transit_pages; | |
82 | EXPORT_SYMBOL(obd_dirty_transit_pages); | |
83 | ||
84 | char obd_jobid_var[JOBSTATS_JOBID_VAR_MAX_LEN + 1] = JOBSTATS_DISABLE; | |
85 | EXPORT_SYMBOL(obd_jobid_var); | |
86 | ||
76133e66 OD |
87 | char obd_jobid_node[JOBSTATS_JOBID_SIZE + 1]; |
88 | ||
89 | /* Get jobid of current process from stored variable or calculate | |
90 | * it from pid and user_id. | |
d7e09d03 | 91 | * |
76133e66 OD |
92 | * Historically this was also done by reading the environment variable |
93 | * stored in between the "env_start" & "env_end" of task struct. | |
94 | * This is now deprecated. | |
d7e09d03 PT |
95 | */ |
96 | int lustre_get_jobid(char *jobid) | |
97 | { | |
d7e09d03 PT |
98 | memset(jobid, 0, JOBSTATS_JOBID_SIZE); |
99 | /* Jobstats isn't enabled */ | |
100 | if (strcmp(obd_jobid_var, JOBSTATS_DISABLE) == 0) | |
0a3bdb00 | 101 | return 0; |
d7e09d03 PT |
102 | |
103 | /* Use process name + fsuid as jobid */ | |
104 | if (strcmp(obd_jobid_var, JOBSTATS_PROCNAME_UID) == 0) { | |
105 | snprintf(jobid, JOBSTATS_JOBID_SIZE, "%s.%u", | |
4b1a25f0 PT |
106 | current_comm(), |
107 | from_kuid(&init_user_ns, current_fsuid())); | |
0a3bdb00 | 108 | return 0; |
d7e09d03 PT |
109 | } |
110 | ||
76133e66 OD |
111 | /* Whole node dedicated to single job */ |
112 | if (strcmp(obd_jobid_var, JOBSTATS_NODELOCAL) == 0) { | |
113 | strcpy(jobid, obd_jobid_node); | |
114 | return 0; | |
d7e09d03 | 115 | } |
76133e66 OD |
116 | |
117 | return -ENOENT; | |
d7e09d03 PT |
118 | } |
119 | EXPORT_SYMBOL(lustre_get_jobid); | |
120 | ||
d7e09d03 PT |
121 | static inline void obd_data2conn(struct lustre_handle *conn, |
122 | struct obd_ioctl_data *data) | |
123 | { | |
ec83e611 | 124 | memset(conn, 0, sizeof(*conn)); |
d7e09d03 PT |
125 | conn->cookie = data->ioc_cookie; |
126 | } | |
127 | ||
128 | static inline void obd_conn2data(struct obd_ioctl_data *data, | |
129 | struct lustre_handle *conn) | |
130 | { | |
131 | data->ioc_cookie = conn->cookie; | |
132 | } | |
133 | ||
fb320795 | 134 | static int class_resolve_dev_name(__u32 len, const char *name) |
d7e09d03 PT |
135 | { |
136 | int rc; | |
137 | int dev; | |
138 | ||
d7e09d03 PT |
139 | if (!len || !name) { |
140 | CERROR("No name passed,!\n"); | |
d212afd9 JL |
141 | rc = -EINVAL; |
142 | goto out; | |
d7e09d03 PT |
143 | } |
144 | if (name[len - 1] != 0) { | |
145 | CERROR("Name not nul terminated!\n"); | |
d212afd9 JL |
146 | rc = -EINVAL; |
147 | goto out; | |
d7e09d03 PT |
148 | } |
149 | ||
150 | CDEBUG(D_IOCTL, "device name %s\n", name); | |
151 | dev = class_name2dev(name); | |
152 | if (dev == -1) { | |
153 | CDEBUG(D_IOCTL, "No device for name %s!\n", name); | |
d212afd9 JL |
154 | rc = -EINVAL; |
155 | goto out; | |
d7e09d03 PT |
156 | } |
157 | ||
158 | CDEBUG(D_IOCTL, "device name %s, dev %d\n", name, dev); | |
159 | rc = dev; | |
160 | ||
161 | out: | |
0a3bdb00 | 162 | return rc; |
d7e09d03 PT |
163 | } |
164 | ||
165 | int class_handle_ioctl(unsigned int cmd, unsigned long arg) | |
166 | { | |
167 | char *buf = NULL; | |
168 | struct obd_ioctl_data *data; | |
169 | struct libcfs_debug_ioctl_data *debug_data; | |
170 | struct obd_device *obd = NULL; | |
171 | int err = 0, len = 0; | |
d7e09d03 PT |
172 | |
173 | /* only for debugging */ | |
174 | if (cmd == LIBCFS_IOC_DEBUG_MASK) { | |
bdbb0512 | 175 | debug_data = (struct libcfs_debug_ioctl_data *)arg; |
d7e09d03 PT |
176 | libcfs_subsystem_debug = debug_data->subs; |
177 | libcfs_debug = debug_data->debug; | |
178 | return 0; | |
179 | } | |
180 | ||
181 | CDEBUG(D_IOCTL, "cmd = %x\n", cmd); | |
e3e8ff41 | 182 | if (obd_ioctl_getdata(&buf, &len, (void __user *)arg)) { |
d7e09d03 | 183 | CERROR("OBD ioctl: data error\n"); |
0a3bdb00 | 184 | return -EINVAL; |
d7e09d03 PT |
185 | } |
186 | data = (struct obd_ioctl_data *)buf; | |
187 | ||
188 | switch (cmd) { | |
189 | case OBD_IOC_PROCESS_CFG: { | |
190 | struct lustre_cfg *lcfg; | |
191 | ||
192 | if (!data->ioc_plen1 || !data->ioc_pbuf1) { | |
193 | CERROR("No config buffer passed!\n"); | |
d212afd9 JL |
194 | err = -EINVAL; |
195 | goto out; | |
d7e09d03 | 196 | } |
d7279044 | 197 | lcfg = kzalloc(data->ioc_plen1, GFP_NOFS); |
485640b5 | 198 | if (!lcfg) { |
d212afd9 JL |
199 | err = -ENOMEM; |
200 | goto out; | |
201 | } | |
926d6fb2 | 202 | err = copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1); |
d7e09d03 PT |
203 | if (!err) |
204 | err = lustre_cfg_sanity_check(lcfg, data->ioc_plen1); | |
205 | if (!err) | |
206 | err = class_process_config(lcfg); | |
207 | ||
d7279044 | 208 | kfree(lcfg); |
d212afd9 | 209 | goto out; |
d7e09d03 PT |
210 | } |
211 | ||
212 | case OBD_GET_VERSION: | |
213 | if (!data->ioc_inlbuf1) { | |
214 | CERROR("No buffer passed in ioctl\n"); | |
d212afd9 JL |
215 | err = -EINVAL; |
216 | goto out; | |
d7e09d03 PT |
217 | } |
218 | ||
eb3d9989 | 219 | if (strlen(LUSTRE_VERSION_STRING) + 1 > data->ioc_inllen1) { |
d7e09d03 | 220 | CERROR("ioctl buffer too small to hold version\n"); |
d212afd9 JL |
221 | err = -EINVAL; |
222 | goto out; | |
d7e09d03 PT |
223 | } |
224 | ||
eb3d9989 OD |
225 | memcpy(data->ioc_bulk, LUSTRE_VERSION_STRING, |
226 | strlen(LUSTRE_VERSION_STRING) + 1); | |
d7e09d03 | 227 | |
e3e8ff41 | 228 | err = obd_ioctl_popdata((void __user *)arg, data, len); |
d7e09d03 PT |
229 | if (err) |
230 | err = -EFAULT; | |
d212afd9 | 231 | goto out; |
d7e09d03 PT |
232 | |
233 | case OBD_IOC_NAME2DEV: { | |
234 | /* Resolve a device name. This does not change the | |
235 | * currently selected device. | |
236 | */ | |
237 | int dev; | |
238 | ||
239 | dev = class_resolve_dev_name(data->ioc_inllen1, | |
240 | data->ioc_inlbuf1); | |
241 | data->ioc_dev = dev; | |
d212afd9 JL |
242 | if (dev < 0) { |
243 | err = -EINVAL; | |
244 | goto out; | |
245 | } | |
d7e09d03 | 246 | |
e3e8ff41 OD |
247 | err = obd_ioctl_popdata((void __user *)arg, data, |
248 | sizeof(*data)); | |
d7e09d03 PT |
249 | if (err) |
250 | err = -EFAULT; | |
d212afd9 | 251 | goto out; |
d7e09d03 PT |
252 | } |
253 | ||
254 | case OBD_IOC_UUID2DEV: { | |
255 | /* Resolve a device uuid. This does not change the | |
256 | * currently selected device. | |
257 | */ | |
258 | int dev; | |
259 | struct obd_uuid uuid; | |
260 | ||
261 | if (!data->ioc_inllen1 || !data->ioc_inlbuf1) { | |
262 | CERROR("No UUID passed!\n"); | |
d212afd9 JL |
263 | err = -EINVAL; |
264 | goto out; | |
d7e09d03 PT |
265 | } |
266 | if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) { | |
267 | CERROR("UUID not NUL terminated!\n"); | |
d212afd9 JL |
268 | err = -EINVAL; |
269 | goto out; | |
d7e09d03 PT |
270 | } |
271 | ||
272 | CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1); | |
273 | obd_str2uuid(&uuid, data->ioc_inlbuf1); | |
274 | dev = class_uuid2dev(&uuid); | |
275 | data->ioc_dev = dev; | |
276 | if (dev == -1) { | |
277 | CDEBUG(D_IOCTL, "No device for UUID %s!\n", | |
278 | data->ioc_inlbuf1); | |
d212afd9 JL |
279 | err = -EINVAL; |
280 | goto out; | |
d7e09d03 PT |
281 | } |
282 | ||
283 | CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1, | |
284 | dev); | |
e3e8ff41 OD |
285 | err = obd_ioctl_popdata((void __user *)arg, data, |
286 | sizeof(*data)); | |
d7e09d03 PT |
287 | if (err) |
288 | err = -EFAULT; | |
d212afd9 | 289 | goto out; |
d7e09d03 PT |
290 | } |
291 | ||
292 | case OBD_IOC_CLOSE_UUID: { | |
293 | CDEBUG(D_IOCTL, "closing all connections to uuid %s (NOOP)\n", | |
294 | data->ioc_inlbuf1); | |
d212afd9 JL |
295 | err = 0; |
296 | goto out; | |
d7e09d03 PT |
297 | } |
298 | ||
299 | case OBD_IOC_GETDEVICE: { | |
300 | int index = data->ioc_count; | |
301 | char *status, *str; | |
302 | ||
303 | if (!data->ioc_inlbuf1) { | |
304 | CERROR("No buffer passed in ioctl\n"); | |
d212afd9 JL |
305 | err = -EINVAL; |
306 | goto out; | |
d7e09d03 PT |
307 | } |
308 | if (data->ioc_inllen1 < 128) { | |
309 | CERROR("ioctl buffer too small to hold version\n"); | |
d212afd9 JL |
310 | err = -EINVAL; |
311 | goto out; | |
d7e09d03 PT |
312 | } |
313 | ||
314 | obd = class_num2obd(index); | |
d212afd9 JL |
315 | if (!obd) { |
316 | err = -ENOENT; | |
317 | goto out; | |
318 | } | |
d7e09d03 PT |
319 | |
320 | if (obd->obd_stopping) | |
321 | status = "ST"; | |
322 | else if (obd->obd_set_up) | |
323 | status = "UP"; | |
324 | else if (obd->obd_attached) | |
325 | status = "AT"; | |
326 | else | |
327 | status = "--"; | |
328 | str = (char *)data->ioc_bulk; | |
329 | snprintf(str, len - sizeof(*data), "%3d %s %s %s %s %d", | |
330 | (int)index, status, obd->obd_type->typ_name, | |
331 | obd->obd_name, obd->obd_uuid.uuid, | |
332 | atomic_read(&obd->obd_refcount)); | |
e3e8ff41 | 333 | err = obd_ioctl_popdata((void __user *)arg, data, len); |
d7e09d03 | 334 | |
d212afd9 JL |
335 | err = 0; |
336 | goto out; | |
d7e09d03 PT |
337 | } |
338 | ||
339 | } | |
340 | ||
341 | if (data->ioc_dev == OBD_DEV_BY_DEVNAME) { | |
cce3c2da | 342 | if (data->ioc_inllen4 <= 0 || !data->ioc_inlbuf4) { |
d212afd9 JL |
343 | err = -EINVAL; |
344 | goto out; | |
345 | } | |
346 | if (strnlen(data->ioc_inlbuf4, MAX_OBD_NAME) >= MAX_OBD_NAME) { | |
347 | err = -EINVAL; | |
348 | goto out; | |
349 | } | |
d7e09d03 PT |
350 | obd = class_name2obd(data->ioc_inlbuf4); |
351 | } else if (data->ioc_dev < class_devno_max()) { | |
352 | obd = class_num2obd(data->ioc_dev); | |
353 | } else { | |
354 | CERROR("OBD ioctl: No device\n"); | |
d212afd9 JL |
355 | err = -EINVAL; |
356 | goto out; | |
d7e09d03 PT |
357 | } |
358 | ||
cce3c2da | 359 | if (!obd) { |
d7e09d03 | 360 | CERROR("OBD ioctl : No Device %d\n", data->ioc_dev); |
d212afd9 JL |
361 | err = -EINVAL; |
362 | goto out; | |
d7e09d03 PT |
363 | } |
364 | LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC); | |
365 | ||
366 | if (!obd->obd_set_up || obd->obd_stopping) { | |
d212afd9 JL |
367 | CERROR("OBD ioctl: device not setup %d\n", data->ioc_dev); |
368 | err = -EINVAL; | |
369 | goto out; | |
d7e09d03 PT |
370 | } |
371 | ||
a58a38ac | 372 | switch (cmd) { |
d7e09d03 PT |
373 | case OBD_IOC_NO_TRANSNO: { |
374 | if (!obd->obd_attached) { | |
375 | CERROR("Device %d not attached\n", obd->obd_minor); | |
d212afd9 JL |
376 | err = -ENODEV; |
377 | goto out; | |
d7e09d03 PT |
378 | } |
379 | CDEBUG(D_HA, "%s: disabling committed-transno notification\n", | |
380 | obd->obd_name); | |
381 | obd->obd_no_transno = 1; | |
d212afd9 JL |
382 | err = 0; |
383 | goto out; | |
d7e09d03 PT |
384 | } |
385 | ||
386 | default: { | |
387 | err = obd_iocontrol(cmd, obd->obd_self_export, len, data, NULL); | |
388 | if (err) | |
d212afd9 | 389 | goto out; |
d7e09d03 | 390 | |
e3e8ff41 | 391 | err = obd_ioctl_popdata((void __user *)arg, data, len); |
d7e09d03 PT |
392 | if (err) |
393 | err = -EFAULT; | |
d212afd9 | 394 | goto out; |
d7e09d03 PT |
395 | } |
396 | } | |
397 | ||
398 | out: | |
399 | if (buf) | |
400 | obd_ioctl_freedata(buf, len); | |
0a3bdb00 | 401 | return err; |
d7e09d03 PT |
402 | } /* class_handle_ioctl */ |
403 | ||
d7e09d03 | 404 | #define OBD_INIT_CHECK |
28fcc662 | 405 | static int obd_init_checks(void) |
d7e09d03 PT |
406 | { |
407 | __u64 u64val, div64val; | |
408 | char buf[64]; | |
409 | int len, ret = 0; | |
410 | ||
55f5a824 | 411 | CDEBUG(D_INFO, "LPU64=%s, LPD64=%s, LPX64=%s\n", "%llu", "%lld", "%#llx"); |
d7e09d03 | 412 | |
55f5a824 | 413 | CDEBUG(D_INFO, "OBD_OBJECT_EOF = %#llx\n", (__u64)OBD_OBJECT_EOF); |
d7e09d03 PT |
414 | |
415 | u64val = OBD_OBJECT_EOF; | |
55f5a824 | 416 | CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = %#llx\n", u64val); |
d7e09d03 | 417 | if (u64val != OBD_OBJECT_EOF) { |
55f5a824 | 418 | CERROR("__u64 %#llx(%d) != 0xffffffffffffffff\n", |
d7e09d03 PT |
419 | u64val, (int)sizeof(u64val)); |
420 | ret = -EINVAL; | |
421 | } | |
55f5a824 | 422 | len = snprintf(buf, sizeof(buf), "%#llx", u64val); |
d7e09d03 PT |
423 | if (len != 18) { |
424 | CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len); | |
425 | ret = -EINVAL; | |
426 | } | |
427 | ||
428 | div64val = OBD_OBJECT_EOF; | |
55f5a824 | 429 | CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = %#llx\n", u64val); |
d7e09d03 | 430 | if (u64val != OBD_OBJECT_EOF) { |
55f5a824 | 431 | CERROR("__u64 %#llx(%d) != 0xffffffffffffffff\n", |
d7e09d03 PT |
432 | u64val, (int)sizeof(u64val)); |
433 | ret = -EOVERFLOW; | |
434 | } | |
435 | if (u64val >> 8 != OBD_OBJECT_EOF >> 8) { | |
55f5a824 | 436 | CERROR("__u64 %#llx(%d) != 0xffffffffffffffff\n", |
d7e09d03 PT |
437 | u64val, (int)sizeof(u64val)); |
438 | return -EOVERFLOW; | |
439 | } | |
440 | if (do_div(div64val, 256) != (u64val & 255)) { | |
b2952d62 | 441 | CERROR("do_div(%#llx,256) != %llu\n", u64val, u64val & 255); |
d7e09d03 PT |
442 | return -EOVERFLOW; |
443 | } | |
444 | if (u64val >> 8 != div64val) { | |
55f5a824 | 445 | CERROR("do_div(%#llx,256) %llu != %llu\n", |
d7e09d03 PT |
446 | u64val, div64val, u64val >> 8); |
447 | return -EOVERFLOW; | |
448 | } | |
55f5a824 | 449 | len = snprintf(buf, sizeof(buf), "%#llx", u64val); |
d7e09d03 PT |
450 | if (len != 18) { |
451 | CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len); | |
452 | ret = -EINVAL; | |
453 | } | |
b0f5aad5 | 454 | len = snprintf(buf, sizeof(buf), "%llu", u64val); |
d7e09d03 PT |
455 | if (len != 20) { |
456 | CWARN("LPU64 wrong length! strlen(%s)=%d != 20\n", buf, len); | |
457 | ret = -EINVAL; | |
458 | } | |
f537dd2c | 459 | len = snprintf(buf, sizeof(buf), "%lld", u64val); |
d7e09d03 PT |
460 | if (len != 2) { |
461 | CWARN("LPD64 wrong length! strlen(%s)=%d != 2\n", buf, len); | |
462 | ret = -EINVAL; | |
463 | } | |
464 | if ((u64val & ~CFS_PAGE_MASK) >= PAGE_CACHE_SIZE) { | |
b0f5aad5 | 465 | CWARN("mask failed: u64val %llu >= %llu\n", u64val, |
d7e09d03 PT |
466 | (__u64)PAGE_CACHE_SIZE); |
467 | ret = -EINVAL; | |
468 | } | |
469 | ||
470 | return ret; | |
471 | } | |
472 | ||
d7e09d03 PT |
473 | extern int class_procfs_init(void); |
474 | extern int class_procfs_clean(void); | |
475 | ||
476 | static int __init init_obdclass(void) | |
477 | { | |
478 | int i, err; | |
50ffcb7e | 479 | |
d7e09d03 PT |
480 | int lustre_register_fs(void); |
481 | ||
eb3d9989 | 482 | LCONSOLE_INFO("Lustre: Build Version: " LUSTRE_VERSION_STRING "\n"); |
d7e09d03 PT |
483 | |
484 | spin_lock_init(&obd_types_lock); | |
485 | obd_zombie_impexp_init(); | |
8cc420d0 | 486 | |
d7e09d03 PT |
487 | err = obd_init_checks(); |
488 | if (err == -EOVERFLOW) | |
489 | return err; | |
490 | ||
491 | class_init_uuidlist(); | |
492 | err = class_handle_init(); | |
493 | if (err) | |
494 | return err; | |
495 | ||
496 | INIT_LIST_HEAD(&obd_types); | |
497 | ||
498 | err = misc_register(&obd_psdev); | |
499 | if (err) { | |
500 | CERROR("cannot register %d err %d\n", OBD_DEV_MINOR, err); | |
501 | return err; | |
502 | } | |
503 | ||
504 | /* This struct is already zeroed for us (static global) */ | |
505 | for (i = 0; i < class_devno_max(); i++) | |
506 | obd_devs[i] = NULL; | |
507 | ||
508 | /* Default the dirty page cache cap to 1/2 of system memory. | |
509 | * For clients with less memory, a larger fraction is needed | |
6ba59179 OD |
510 | * for other purposes (mostly for BGL). |
511 | */ | |
4f6cc9ab PT |
512 | if (totalram_pages <= 512 << (20 - PAGE_CACHE_SHIFT)) |
513 | obd_max_dirty_pages = totalram_pages / 4; | |
d7e09d03 | 514 | else |
4f6cc9ab | 515 | obd_max_dirty_pages = totalram_pages / 2; |
d7e09d03 PT |
516 | |
517 | err = obd_init_caches(); | |
518 | if (err) | |
519 | return err; | |
c7c5da01 | 520 | |
d7e09d03 PT |
521 | err = class_procfs_init(); |
522 | if (err) | |
523 | return err; | |
524 | ||
e2424a12 OD |
525 | err = obd_sysctl_init(); |
526 | if (err) | |
527 | return err; | |
528 | ||
d7e09d03 PT |
529 | err = lu_global_init(); |
530 | if (err) | |
531 | return err; | |
532 | ||
533 | err = cl_global_init(); | |
534 | if (err != 0) | |
535 | return err; | |
536 | ||
d7e09d03 PT |
537 | err = llog_info_init(); |
538 | if (err) | |
539 | return err; | |
540 | ||
541 | err = lustre_register_fs(); | |
542 | ||
543 | return err; | |
544 | } | |
545 | ||
d7e09d03 PT |
546 | static void cleanup_obdclass(void) |
547 | { | |
548 | int i; | |
50ffcb7e | 549 | |
d7e09d03 | 550 | int lustre_unregister_fs(void); |
d7e09d03 PT |
551 | |
552 | lustre_unregister_fs(); | |
553 | ||
554 | misc_deregister(&obd_psdev); | |
555 | for (i = 0; i < class_devno_max(); i++) { | |
556 | struct obd_device *obd = class_num2obd(i); | |
50ffcb7e | 557 | |
d7e09d03 PT |
558 | if (obd && obd->obd_set_up && |
559 | OBT(obd) && OBP(obd, detach)) { | |
560 | /* XXX should this call generic detach otherwise? */ | |
561 | LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC); | |
562 | OBP(obd, detach)(obd); | |
563 | } | |
564 | } | |
565 | llog_info_fini(); | |
566 | cl_global_fini(); | |
567 | lu_global_fini(); | |
568 | ||
569 | obd_cleanup_caches(); | |
d7e09d03 PT |
570 | |
571 | class_procfs_clean(); | |
572 | ||
573 | class_handle_cleanup(); | |
574 | class_exit_uuidlist(); | |
575 | obd_zombie_impexp_stop(); | |
d7e09d03 PT |
576 | } |
577 | ||
a0455471 | 578 | MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>"); |
57878e17 | 579 | MODULE_DESCRIPTION("Lustre Class Driver"); |
6960736c | 580 | MODULE_VERSION(LUSTRE_VERSION_STRING); |
5b0e50b9 | 581 | MODULE_LICENSE("GPL"); |
d7e09d03 | 582 | |
6960736c GKH |
583 | module_init(init_obdclass); |
584 | module_exit(cleanup_obdclass); |