Commit | Line | Data |
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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) 2003, 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 | * lustre/obdclass/obd_config.c | |
37 | * | |
38 | * Config API | |
39 | */ | |
40 | ||
41 | #define DEBUG_SUBSYSTEM S_CLASS | |
610f7377 | 42 | #include "../include/obd_class.h" |
d7e09d03 | 43 | #include <linux/string.h> |
610f7377 GKH |
44 | #include "../include/lustre_log.h" |
45 | #include "../include/lprocfs_status.h" | |
46 | #include "../include/lustre_param.h" | |
d7e09d03 PT |
47 | |
48 | #include "llog_internal.h" | |
49 | ||
db9fc06b | 50 | static struct cfs_hash_ops uuid_hash_ops; |
d7e09d03 PT |
51 | |
52 | /*********** string parsing utils *********/ | |
53 | ||
54 | /* returns 0 if we find this key in the buffer, else 1 */ | |
55 | int class_find_param(char *buf, char *key, char **valp) | |
56 | { | |
57 | char *ptr; | |
58 | ||
59 | if (!buf) | |
60 | return 1; | |
61 | ||
4a87df3e | 62 | ptr = strstr(buf, key); |
dd550e40 | 63 | if (!ptr) |
d7e09d03 PT |
64 | return 1; |
65 | ||
66 | if (valp) | |
67 | *valp = ptr + strlen(key); | |
68 | ||
69 | return 0; | |
70 | } | |
71 | EXPORT_SYMBOL(class_find_param); | |
72 | ||
d7e09d03 | 73 | /* returns 0 if this is the first key in the buffer, else 1. |
6ba59179 OD |
74 | * valp points to first char after key. |
75 | */ | |
24af3e16 | 76 | static int class_match_param(char *buf, const char *key, char **valp) |
d7e09d03 PT |
77 | { |
78 | if (!buf) | |
79 | return 1; | |
80 | ||
81 | if (memcmp(buf, key, strlen(key)) != 0) | |
82 | return 1; | |
83 | ||
84 | if (valp) | |
85 | *valp = buf + strlen(key); | |
86 | ||
87 | return 0; | |
88 | } | |
d7e09d03 PT |
89 | |
90 | static int parse_nid(char *buf, void *value, int quiet) | |
91 | { | |
ab127176 | 92 | lnet_nid_t *nid = value; |
d7e09d03 PT |
93 | |
94 | *nid = libcfs_str2nid(buf); | |
95 | if (*nid != LNET_NID_ANY) | |
96 | return 0; | |
97 | ||
98 | if (!quiet) | |
99 | LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf); | |
100 | return -EINVAL; | |
101 | } | |
102 | ||
103 | static int parse_net(char *buf, void *value) | |
104 | { | |
ab127176 | 105 | __u32 *net = value; |
d7e09d03 PT |
106 | |
107 | *net = libcfs_str2net(buf); | |
108 | CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net)); | |
109 | return 0; | |
110 | } | |
111 | ||
112 | enum { | |
113 | CLASS_PARSE_NID = 1, | |
114 | CLASS_PARSE_NET, | |
115 | }; | |
116 | ||
117 | /* 0 is good nid, | |
6ba59179 OD |
118 | * 1 not found |
119 | * < 0 error | |
120 | * endh is set to next separator | |
121 | */ | |
d7e09d03 PT |
122 | static int class_parse_value(char *buf, int opc, void *value, char **endh, |
123 | int quiet) | |
124 | { | |
125 | char *endp; | |
126 | char tmp; | |
127 | int rc = 0; | |
128 | ||
129 | if (!buf) | |
130 | return 1; | |
131 | while (*buf == ',' || *buf == ':') | |
132 | buf++; | |
133 | if (*buf == ' ' || *buf == '/' || *buf == '\0') | |
134 | return 1; | |
135 | ||
136 | /* nid separators or end of nids */ | |
137 | endp = strpbrk(buf, ",: /"); | |
dd550e40 | 138 | if (!endp) |
d7e09d03 PT |
139 | endp = buf + strlen(buf); |
140 | ||
141 | tmp = *endp; | |
142 | *endp = '\0'; | |
143 | switch (opc) { | |
144 | default: | |
145 | LBUG(); | |
146 | case CLASS_PARSE_NID: | |
147 | rc = parse_nid(buf, value, quiet); | |
148 | break; | |
149 | case CLASS_PARSE_NET: | |
150 | rc = parse_net(buf, value); | |
151 | break; | |
152 | } | |
153 | *endp = tmp; | |
154 | if (rc != 0) | |
155 | return rc; | |
156 | if (endh) | |
157 | *endh = endp; | |
158 | return 0; | |
159 | } | |
160 | ||
161 | int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh) | |
162 | { | |
163 | return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 0); | |
164 | } | |
165 | EXPORT_SYMBOL(class_parse_nid); | |
166 | ||
167 | int class_parse_nid_quiet(char *buf, lnet_nid_t *nid, char **endh) | |
168 | { | |
169 | return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 1); | |
170 | } | |
171 | EXPORT_SYMBOL(class_parse_nid_quiet); | |
172 | ||
d7e09d03 PT |
173 | /********************** class fns **********************/ |
174 | ||
175 | /** | |
176 | * Create a new obd device and set the type, name and uuid. If successful, | |
177 | * the new device can be accessed by either name or uuid. | |
178 | */ | |
d63414eb | 179 | static int class_attach(struct lustre_cfg *lcfg) |
d7e09d03 PT |
180 | { |
181 | struct obd_device *obd = NULL; | |
182 | char *typename, *name, *uuid; | |
183 | int rc, len; | |
d7e09d03 PT |
184 | |
185 | if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) { | |
186 | CERROR("No type passed!\n"); | |
0a3bdb00 | 187 | return -EINVAL; |
d7e09d03 PT |
188 | } |
189 | typename = lustre_cfg_string(lcfg, 1); | |
190 | ||
191 | if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) { | |
192 | CERROR("No name passed!\n"); | |
0a3bdb00 | 193 | return -EINVAL; |
d7e09d03 PT |
194 | } |
195 | name = lustre_cfg_string(lcfg, 0); | |
196 | ||
197 | if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) { | |
198 | CERROR("No UUID passed!\n"); | |
0a3bdb00 | 199 | return -EINVAL; |
d7e09d03 PT |
200 | } |
201 | uuid = lustre_cfg_string(lcfg, 2); | |
202 | ||
203 | CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n", | |
204 | MKSTR(typename), MKSTR(name), MKSTR(uuid)); | |
205 | ||
206 | obd = class_newdev(typename, name); | |
207 | if (IS_ERR(obd)) { | |
208 | /* Already exists or out of obds */ | |
209 | rc = PTR_ERR(obd); | |
210 | obd = NULL; | |
211 | CERROR("Cannot create device %s of type %s : %d\n", | |
212 | name, typename, rc); | |
d212afd9 | 213 | goto out; |
d7e09d03 | 214 | } |
cce3c2da | 215 | LASSERTF(obd, "Cannot get obd device %s of type %s\n", |
d7e09d03 PT |
216 | name, typename); |
217 | LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC, | |
218 | "obd %p obd_magic %08X != %08X\n", | |
219 | obd, obd->obd_magic, OBD_DEVICE_MAGIC); | |
220 | LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0, | |
221 | "%p obd_name %s != %s\n", obd, obd->obd_name, name); | |
222 | ||
223 | rwlock_init(&obd->obd_pool_lock); | |
224 | obd->obd_pool_limit = 0; | |
225 | obd->obd_pool_slv = 0; | |
226 | ||
227 | INIT_LIST_HEAD(&obd->obd_exports); | |
228 | INIT_LIST_HEAD(&obd->obd_unlinked_exports); | |
229 | INIT_LIST_HEAD(&obd->obd_delayed_exports); | |
d7e09d03 PT |
230 | spin_lock_init(&obd->obd_nid_lock); |
231 | spin_lock_init(&obd->obd_dev_lock); | |
232 | mutex_init(&obd->obd_dev_mutex); | |
233 | spin_lock_init(&obd->obd_osfs_lock); | |
234 | /* obd->obd_osfs_age must be set to a value in the distant | |
6ba59179 OD |
235 | * past to guarantee a fresh statfs is fetched on mount. |
236 | */ | |
d7e09d03 PT |
237 | obd->obd_osfs_age = cfs_time_shift_64(-1000); |
238 | ||
239 | /* XXX belongs in setup not attach */ | |
240 | init_rwsem(&obd->obd_observer_link_sem); | |
241 | /* recovery data */ | |
d7e09d03 | 242 | init_waitqueue_head(&obd->obd_evict_inprogress_waitq); |
d7e09d03 PT |
243 | |
244 | llog_group_init(&obd->obd_olg, FID_SEQ_LLOG); | |
245 | ||
246 | obd->obd_conn_inprogress = 0; | |
247 | ||
248 | len = strlen(uuid); | |
249 | if (len >= sizeof(obd->obd_uuid)) { | |
250 | CERROR("uuid must be < %d bytes long\n", | |
251 | (int)sizeof(obd->obd_uuid)); | |
d212afd9 JL |
252 | rc = -EINVAL; |
253 | goto out; | |
d7e09d03 PT |
254 | } |
255 | memcpy(obd->obd_uuid.uuid, uuid, len); | |
256 | ||
257 | /* do the attach */ | |
258 | if (OBP(obd, attach)) { | |
ec83e611 | 259 | rc = OBP(obd, attach)(obd, sizeof(*lcfg), lcfg); |
d212afd9 JL |
260 | if (rc) { |
261 | rc = -EINVAL; | |
262 | goto out; | |
263 | } | |
d7e09d03 PT |
264 | } |
265 | ||
266 | /* Detach drops this */ | |
267 | spin_lock(&obd->obd_dev_lock); | |
268 | atomic_set(&obd->obd_refcount, 1); | |
269 | spin_unlock(&obd->obd_dev_lock); | |
270 | lu_ref_init(&obd->obd_reference); | |
271 | lu_ref_add(&obd->obd_reference, "attach", obd); | |
272 | ||
273 | obd->obd_attached = 1; | |
274 | CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n", | |
275 | obd->obd_minor, typename, atomic_read(&obd->obd_refcount)); | |
0a3bdb00 | 276 | return 0; |
d7e09d03 | 277 | out: |
cce3c2da | 278 | if (obd) |
d7e09d03 | 279 | class_release_dev(obd); |
cce3c2da | 280 | |
d7e09d03 PT |
281 | return rc; |
282 | } | |
d7e09d03 PT |
283 | |
284 | /** Create hashes, self-export, and call type-specific setup. | |
285 | * Setup is effectively the "start this obd" call. | |
286 | */ | |
d63414eb | 287 | static int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg) |
d7e09d03 PT |
288 | { |
289 | int err = 0; | |
290 | struct obd_export *exp; | |
d7e09d03 | 291 | |
cce3c2da | 292 | LASSERT(obd); |
d7e09d03 PT |
293 | LASSERTF(obd == class_num2obd(obd->obd_minor), |
294 | "obd %p != obd_devs[%d] %p\n", | |
295 | obd, obd->obd_minor, class_num2obd(obd->obd_minor)); | |
296 | LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC, | |
297 | "obd %p obd_magic %08x != %08x\n", | |
298 | obd, obd->obd_magic, OBD_DEVICE_MAGIC); | |
299 | ||
300 | /* have we attached a type to this device? */ | |
301 | if (!obd->obd_attached) { | |
302 | CERROR("Device %d not attached\n", obd->obd_minor); | |
0a3bdb00 | 303 | return -ENODEV; |
d7e09d03 PT |
304 | } |
305 | ||
306 | if (obd->obd_set_up) { | |
307 | CERROR("Device %d already setup (type %s)\n", | |
308 | obd->obd_minor, obd->obd_type->typ_name); | |
0a3bdb00 | 309 | return -EEXIST; |
d7e09d03 PT |
310 | } |
311 | ||
312 | /* is someone else setting us up right now? (attach inits spinlock) */ | |
313 | spin_lock(&obd->obd_dev_lock); | |
314 | if (obd->obd_starting) { | |
315 | spin_unlock(&obd->obd_dev_lock); | |
316 | CERROR("Device %d setup in progress (type %s)\n", | |
317 | obd->obd_minor, obd->obd_type->typ_name); | |
0a3bdb00 | 318 | return -EEXIST; |
d7e09d03 PT |
319 | } |
320 | /* just leave this on forever. I can't use obd_set_up here because | |
6ba59179 OD |
321 | * other fns check that status, and we're not actually set up yet. |
322 | */ | |
d7e09d03 PT |
323 | obd->obd_starting = 1; |
324 | obd->obd_uuid_hash = NULL; | |
d7e09d03 PT |
325 | spin_unlock(&obd->obd_dev_lock); |
326 | ||
327 | /* create an uuid-export lustre hash */ | |
328 | obd->obd_uuid_hash = cfs_hash_create("UUID_HASH", | |
329 | HASH_UUID_CUR_BITS, | |
330 | HASH_UUID_MAX_BITS, | |
331 | HASH_UUID_BKT_BITS, 0, | |
332 | CFS_HASH_MIN_THETA, | |
333 | CFS_HASH_MAX_THETA, | |
334 | &uuid_hash_ops, CFS_HASH_DEFAULT); | |
d212afd9 JL |
335 | if (!obd->obd_uuid_hash) { |
336 | err = -ENOMEM; | |
337 | goto err_hash; | |
338 | } | |
d7e09d03 | 339 | |
d7e09d03 | 340 | exp = class_new_export(obd, &obd->obd_uuid); |
d212afd9 JL |
341 | if (IS_ERR(exp)) { |
342 | err = PTR_ERR(exp); | |
343 | goto err_hash; | |
344 | } | |
d7e09d03 PT |
345 | |
346 | obd->obd_self_export = exp; | |
d7e09d03 PT |
347 | class_export_put(exp); |
348 | ||
349 | err = obd_setup(obd, lcfg); | |
350 | if (err) | |
d212afd9 | 351 | goto err_exp; |
d7e09d03 PT |
352 | |
353 | obd->obd_set_up = 1; | |
354 | ||
355 | spin_lock(&obd->obd_dev_lock); | |
356 | /* cleanup drops this */ | |
357 | class_incref(obd, "setup", obd); | |
358 | spin_unlock(&obd->obd_dev_lock); | |
359 | ||
360 | CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n", | |
361 | obd->obd_name, obd->obd_uuid.uuid); | |
362 | ||
0a3bdb00 | 363 | return 0; |
d7e09d03 PT |
364 | err_exp: |
365 | if (obd->obd_self_export) { | |
366 | class_unlink_export(obd->obd_self_export); | |
367 | obd->obd_self_export = NULL; | |
368 | } | |
369 | err_hash: | |
370 | if (obd->obd_uuid_hash) { | |
371 | cfs_hash_putref(obd->obd_uuid_hash); | |
372 | obd->obd_uuid_hash = NULL; | |
373 | } | |
d7e09d03 PT |
374 | obd->obd_starting = 0; |
375 | CERROR("setup %s failed (%d)\n", obd->obd_name, err); | |
376 | return err; | |
377 | } | |
d7e09d03 PT |
378 | |
379 | /** We have finished using this obd and are ready to destroy it. | |
380 | * There can be no more references to this obd. | |
381 | */ | |
d63414eb | 382 | static int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg) |
d7e09d03 | 383 | { |
d7e09d03 PT |
384 | if (obd->obd_set_up) { |
385 | CERROR("OBD device %d still set up\n", obd->obd_minor); | |
0a3bdb00 | 386 | return -EBUSY; |
d7e09d03 PT |
387 | } |
388 | ||
389 | spin_lock(&obd->obd_dev_lock); | |
390 | if (!obd->obd_attached) { | |
391 | spin_unlock(&obd->obd_dev_lock); | |
392 | CERROR("OBD device %d not attached\n", obd->obd_minor); | |
0a3bdb00 | 393 | return -ENODEV; |
d7e09d03 PT |
394 | } |
395 | obd->obd_attached = 0; | |
396 | spin_unlock(&obd->obd_dev_lock); | |
397 | ||
398 | CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n", | |
399 | obd->obd_name, obd->obd_uuid.uuid); | |
400 | ||
401 | class_decref(obd, "attach", obd); | |
0a3bdb00 | 402 | return 0; |
d7e09d03 | 403 | } |
d7e09d03 | 404 | |
52cf6acf | 405 | /** Start shutting down the obd. There may be in-progress ops when |
d7e09d03 PT |
406 | * this is called. We tell them to start shutting down with a call |
407 | * to class_disconnect_exports(). | |
408 | */ | |
d63414eb | 409 | static int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg) |
d7e09d03 PT |
410 | { |
411 | int err = 0; | |
412 | char *flag; | |
d7e09d03 PT |
413 | |
414 | OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS); | |
415 | ||
416 | if (!obd->obd_set_up) { | |
417 | CERROR("Device %d not setup\n", obd->obd_minor); | |
0a3bdb00 | 418 | return -ENODEV; |
d7e09d03 PT |
419 | } |
420 | ||
421 | spin_lock(&obd->obd_dev_lock); | |
422 | if (obd->obd_stopping) { | |
423 | spin_unlock(&obd->obd_dev_lock); | |
424 | CERROR("OBD %d already stopping\n", obd->obd_minor); | |
0a3bdb00 | 425 | return -ENODEV; |
d7e09d03 PT |
426 | } |
427 | /* Leave this on forever */ | |
428 | obd->obd_stopping = 1; | |
429 | ||
430 | /* wait for already-arrived-connections to finish. */ | |
431 | while (obd->obd_conn_inprogress > 0) { | |
432 | spin_unlock(&obd->obd_dev_lock); | |
433 | ||
434 | cond_resched(); | |
435 | ||
436 | spin_lock(&obd->obd_dev_lock); | |
437 | } | |
438 | spin_unlock(&obd->obd_dev_lock); | |
439 | ||
440 | if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) { | |
441 | for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++) | |
442 | switch (*flag) { | |
443 | case 'F': | |
444 | obd->obd_force = 1; | |
445 | break; | |
446 | case 'A': | |
447 | LCONSOLE_WARN("Failing over %s\n", | |
448 | obd->obd_name); | |
449 | obd->obd_fail = 1; | |
450 | obd->obd_no_transno = 1; | |
451 | obd->obd_no_recov = 1; | |
452 | if (OBP(obd, iocontrol)) { | |
453 | obd_iocontrol(OBD_IOC_SYNC, | |
454 | obd->obd_self_export, | |
455 | 0, NULL, NULL); | |
456 | } | |
457 | break; | |
458 | default: | |
459 | CERROR("Unrecognised flag '%c'\n", *flag); | |
460 | } | |
461 | } | |
462 | ||
463 | LASSERT(obd->obd_self_export); | |
464 | ||
d7e09d03 PT |
465 | /* Precleanup, we must make sure all exports get destroyed. */ |
466 | err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS); | |
467 | if (err) | |
468 | CERROR("Precleanup %s returned %d\n", | |
469 | obd->obd_name, err); | |
470 | ||
471 | /* destroy an uuid-export hash body */ | |
472 | if (obd->obd_uuid_hash) { | |
473 | cfs_hash_putref(obd->obd_uuid_hash); | |
474 | obd->obd_uuid_hash = NULL; | |
475 | } | |
476 | ||
d7e09d03 PT |
477 | class_decref(obd, "setup", obd); |
478 | obd->obd_set_up = 0; | |
479 | ||
0a3bdb00 | 480 | return 0; |
d7e09d03 | 481 | } |
d7e09d03 PT |
482 | |
483 | struct obd_device *class_incref(struct obd_device *obd, | |
484 | const char *scope, const void *source) | |
485 | { | |
486 | lu_ref_add_atomic(&obd->obd_reference, scope, source); | |
487 | atomic_inc(&obd->obd_refcount); | |
488 | CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd, | |
489 | atomic_read(&obd->obd_refcount)); | |
490 | ||
491 | return obd; | |
492 | } | |
493 | EXPORT_SYMBOL(class_incref); | |
494 | ||
495 | void class_decref(struct obd_device *obd, const char *scope, const void *source) | |
496 | { | |
497 | int err; | |
498 | int refs; | |
499 | ||
500 | spin_lock(&obd->obd_dev_lock); | |
501 | atomic_dec(&obd->obd_refcount); | |
502 | refs = atomic_read(&obd->obd_refcount); | |
503 | spin_unlock(&obd->obd_dev_lock); | |
504 | lu_ref_del(&obd->obd_reference, scope, source); | |
505 | ||
506 | CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs); | |
507 | ||
508 | if ((refs == 1) && obd->obd_stopping) { | |
509 | /* All exports have been destroyed; there should | |
6ba59179 OD |
510 | * be no more in-progress ops by this point. |
511 | */ | |
d7e09d03 PT |
512 | |
513 | spin_lock(&obd->obd_self_export->exp_lock); | |
514 | obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd); | |
515 | spin_unlock(&obd->obd_self_export->exp_lock); | |
516 | ||
517 | /* note that we'll recurse into class_decref again */ | |
518 | class_unlink_export(obd->obd_self_export); | |
519 | return; | |
520 | } | |
521 | ||
522 | if (refs == 0) { | |
523 | CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n", | |
524 | obd->obd_name, obd->obd_uuid.uuid); | |
525 | LASSERT(!obd->obd_attached); | |
526 | if (obd->obd_stopping) { | |
527 | /* If we're not stopping, we were never set up */ | |
528 | err = obd_cleanup(obd); | |
529 | if (err) | |
530 | CERROR("Cleanup %s returned %d\n", | |
531 | obd->obd_name, err); | |
532 | } | |
533 | if (OBP(obd, detach)) { | |
534 | err = OBP(obd, detach)(obd); | |
535 | if (err) | |
536 | CERROR("Detach returned %d\n", err); | |
537 | } | |
538 | class_release_dev(obd); | |
539 | } | |
540 | } | |
541 | EXPORT_SYMBOL(class_decref); | |
542 | ||
543 | /** Add a failover nid location. | |
544 | * Client obd types contact server obd types using this nid list. | |
545 | */ | |
d63414eb | 546 | static int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg) |
d7e09d03 PT |
547 | { |
548 | struct obd_import *imp; | |
549 | struct obd_uuid uuid; | |
550 | int rc; | |
d7e09d03 PT |
551 | |
552 | if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 || | |
553 | LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) { | |
554 | CERROR("invalid conn_uuid\n"); | |
0a3bdb00 | 555 | return -EINVAL; |
d7e09d03 PT |
556 | } |
557 | if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) && | |
558 | strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) && | |
559 | strcmp(obd->obd_type->typ_name, LUSTRE_OSP_NAME) && | |
560 | strcmp(obd->obd_type->typ_name, LUSTRE_LWP_NAME) && | |
561 | strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) { | |
562 | CERROR("can't add connection on non-client dev\n"); | |
0a3bdb00 | 563 | return -EINVAL; |
d7e09d03 PT |
564 | } |
565 | ||
566 | imp = obd->u.cli.cl_import; | |
567 | if (!imp) { | |
568 | CERROR("try to add conn on immature client dev\n"); | |
0a3bdb00 | 569 | return -EINVAL; |
d7e09d03 PT |
570 | } |
571 | ||
572 | obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1)); | |
573 | rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num); | |
574 | ||
0a3bdb00 | 575 | return rc; |
d7e09d03 | 576 | } |
d7e09d03 PT |
577 | |
578 | /** Remove a failover nid location. | |
579 | */ | |
d63414eb | 580 | static int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg) |
d7e09d03 PT |
581 | { |
582 | struct obd_import *imp; | |
583 | struct obd_uuid uuid; | |
584 | int rc; | |
d7e09d03 PT |
585 | |
586 | if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 || | |
587 | LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) { | |
588 | CERROR("invalid conn_uuid\n"); | |
0a3bdb00 | 589 | return -EINVAL; |
d7e09d03 PT |
590 | } |
591 | if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) && | |
592 | strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) { | |
593 | CERROR("can't del connection on non-client dev\n"); | |
0a3bdb00 | 594 | return -EINVAL; |
d7e09d03 PT |
595 | } |
596 | ||
597 | imp = obd->u.cli.cl_import; | |
598 | if (!imp) { | |
599 | CERROR("try to del conn on immature client dev\n"); | |
0a3bdb00 | 600 | return -EINVAL; |
d7e09d03 PT |
601 | } |
602 | ||
603 | obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1)); | |
604 | rc = obd_del_conn(imp, &uuid); | |
605 | ||
0a3bdb00 | 606 | return rc; |
d7e09d03 PT |
607 | } |
608 | ||
609 | LIST_HEAD(lustre_profile_list); | |
610 | ||
54442610 | 611 | struct lustre_profile *class_get_profile(const char *prof) |
d7e09d03 PT |
612 | { |
613 | struct lustre_profile *lprof; | |
614 | ||
d7e09d03 PT |
615 | list_for_each_entry(lprof, &lustre_profile_list, lp_list) { |
616 | if (!strcmp(lprof->lp_profile, prof)) { | |
0a3bdb00 | 617 | return lprof; |
d7e09d03 PT |
618 | } |
619 | } | |
0a3bdb00 | 620 | return NULL; |
d7e09d03 PT |
621 | } |
622 | EXPORT_SYMBOL(class_get_profile); | |
623 | ||
624 | /** Create a named "profile". | |
625 | * This defines the mdc and osc names to use for a client. | |
626 | * This also is used to define the lov to be used by a mdt. | |
627 | */ | |
d63414eb SB |
628 | static int class_add_profile(int proflen, char *prof, int osclen, char *osc, |
629 | int mdclen, char *mdc) | |
d7e09d03 PT |
630 | { |
631 | struct lustre_profile *lprof; | |
632 | int err = 0; | |
d7e09d03 PT |
633 | |
634 | CDEBUG(D_CONFIG, "Add profile %s\n", prof); | |
635 | ||
d7279044 | 636 | lprof = kzalloc(sizeof(*lprof), GFP_NOFS); |
485640b5 | 637 | if (!lprof) |
0a3bdb00 | 638 | return -ENOMEM; |
d7e09d03 PT |
639 | INIT_LIST_HEAD(&lprof->lp_list); |
640 | ||
641 | LASSERT(proflen == (strlen(prof) + 1)); | |
d5be8e1d | 642 | lprof->lp_profile = kmemdup(prof, proflen, GFP_NOFS); |
dd550e40 | 643 | if (!lprof->lp_profile) { |
d212afd9 | 644 | err = -ENOMEM; |
32a3fab2 | 645 | goto free_lprof; |
d212afd9 | 646 | } |
d7e09d03 PT |
647 | |
648 | LASSERT(osclen == (strlen(osc) + 1)); | |
d5be8e1d | 649 | lprof->lp_dt = kmemdup(osc, osclen, GFP_NOFS); |
dd550e40 | 650 | if (!lprof->lp_dt) { |
d212afd9 | 651 | err = -ENOMEM; |
32a3fab2 | 652 | goto free_lp_profile; |
d212afd9 | 653 | } |
d7e09d03 PT |
654 | |
655 | if (mdclen > 0) { | |
656 | LASSERT(mdclen == (strlen(mdc) + 1)); | |
d5be8e1d | 657 | lprof->lp_md = kmemdup(mdc, mdclen, GFP_NOFS); |
dd550e40 | 658 | if (!lprof->lp_md) { |
d212afd9 | 659 | err = -ENOMEM; |
32a3fab2 | 660 | goto free_lp_dt; |
d212afd9 | 661 | } |
d7e09d03 PT |
662 | } |
663 | ||
664 | list_add(&lprof->lp_list, &lustre_profile_list); | |
0a3bdb00 | 665 | return err; |
d7e09d03 | 666 | |
32a3fab2 JL |
667 | free_lp_dt: |
668 | kfree(lprof->lp_dt); | |
669 | free_lp_profile: | |
670 | kfree(lprof->lp_profile); | |
671 | free_lprof: | |
d7279044 | 672 | kfree(lprof); |
0a3bdb00 | 673 | return err; |
d7e09d03 PT |
674 | } |
675 | ||
676 | void class_del_profile(const char *prof) | |
677 | { | |
678 | struct lustre_profile *lprof; | |
d7e09d03 PT |
679 | |
680 | CDEBUG(D_CONFIG, "Del profile %s\n", prof); | |
681 | ||
682 | lprof = class_get_profile(prof); | |
683 | if (lprof) { | |
684 | list_del(&lprof->lp_list); | |
d7279044 JL |
685 | kfree(lprof->lp_profile); |
686 | kfree(lprof->lp_dt); | |
32a3fab2 | 687 | kfree(lprof->lp_md); |
d7279044 | 688 | kfree(lprof); |
d7e09d03 | 689 | } |
d7e09d03 PT |
690 | } |
691 | EXPORT_SYMBOL(class_del_profile); | |
692 | ||
693 | /* COMPAT_146 */ | |
694 | void class_del_profiles(void) | |
695 | { | |
696 | struct lustre_profile *lprof, *n; | |
d7e09d03 PT |
697 | |
698 | list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) { | |
699 | list_del(&lprof->lp_list); | |
d7279044 JL |
700 | kfree(lprof->lp_profile); |
701 | kfree(lprof->lp_dt); | |
32a3fab2 | 702 | kfree(lprof->lp_md); |
d7279044 | 703 | kfree(lprof); |
d7e09d03 | 704 | } |
d7e09d03 PT |
705 | } |
706 | EXPORT_SYMBOL(class_del_profiles); | |
707 | ||
708 | static int class_set_global(char *ptr, int val, struct lustre_cfg *lcfg) | |
709 | { | |
d7e09d03 PT |
710 | if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0) |
711 | at_min = val; | |
712 | else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0) | |
713 | at_max = val; | |
714 | else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0) | |
715 | at_extra = val; | |
716 | else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0) | |
717 | at_early_margin = val; | |
718 | else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0) | |
719 | at_history = val; | |
720 | else if (class_match_param(ptr, PARAM_JOBID_VAR, NULL) == 0) | |
721 | strlcpy(obd_jobid_var, lustre_cfg_string(lcfg, 2), | |
722 | JOBSTATS_JOBID_VAR_MAX_LEN + 1); | |
723 | else | |
0a3bdb00 | 724 | return -EINVAL; |
d7e09d03 PT |
725 | |
726 | CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val); | |
0a3bdb00 | 727 | return 0; |
d7e09d03 PT |
728 | } |
729 | ||
d7e09d03 | 730 | /* We can't call ll_process_config or lquota_process_config directly because |
6ba59179 OD |
731 | * it lives in a module that must be loaded after this one. |
732 | */ | |
ea28d21a MR |
733 | static int (*client_process_config)(struct lustre_cfg *lcfg); |
734 | static int (*quota_process_config)(struct lustre_cfg *lcfg); | |
d7e09d03 PT |
735 | |
736 | void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg)) | |
737 | { | |
738 | client_process_config = cpc; | |
739 | } | |
740 | EXPORT_SYMBOL(lustre_register_client_process_config); | |
741 | ||
7d4bae45 AB |
742 | static int process_param2_config(struct lustre_cfg *lcfg) |
743 | { | |
744 | char *param = lustre_cfg_string(lcfg, 1); | |
745 | char *upcall = lustre_cfg_string(lcfg, 2); | |
746 | char *argv[] = { | |
747 | [0] = "/usr/sbin/lctl", | |
748 | [1] = "set_param", | |
749 | [2] = param, | |
750 | [3] = NULL | |
751 | }; | |
98f2d643 AB |
752 | ktime_t start; |
753 | ktime_t end; | |
7d4bae45 AB |
754 | int rc; |
755 | ||
7d4bae45 AB |
756 | /* Add upcall processing here. Now only lctl is supported */ |
757 | if (strcmp(upcall, LCTL_UPCALL) != 0) { | |
758 | CERROR("Unsupported upcall %s\n", upcall); | |
759 | return -EINVAL; | |
760 | } | |
761 | ||
98f2d643 | 762 | start = ktime_get(); |
46ffc934 | 763 | rc = call_usermodehelper(argv[0], argv, NULL, 1); |
98f2d643 | 764 | end = ktime_get(); |
7d4bae45 AB |
765 | |
766 | if (rc < 0) { | |
767 | CERROR( | |
768 | "lctl: error invoking upcall %s %s %s: rc = %d; time %ldus\n", | |
769 | argv[0], argv[1], argv[2], rc, | |
98f2d643 | 770 | (long)ktime_us_delta(end, start)); |
7d4bae45 AB |
771 | } else { |
772 | CDEBUG(D_HA, "lctl: invoked upcall %s %s %s, time %ldus\n", | |
773 | argv[0], argv[1], argv[2], | |
98f2d643 | 774 | (long)ktime_us_delta(end, start)); |
7d4bae45 AB |
775 | rc = 0; |
776 | } | |
777 | ||
778 | return rc; | |
779 | } | |
780 | ||
d7e09d03 PT |
781 | /** Process configuration commands given in lustre_cfg form. |
782 | * These may come from direct calls (e.g. class_manual_cleanup) | |
783 | * or processing the config llog, or ioctl from lctl. | |
784 | */ | |
785 | int class_process_config(struct lustre_cfg *lcfg) | |
786 | { | |
787 | struct obd_device *obd; | |
788 | int err; | |
789 | ||
790 | LASSERT(lcfg && !IS_ERR(lcfg)); | |
791 | CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command); | |
792 | ||
793 | /* Commands that don't need a device */ | |
a58a38ac | 794 | switch (lcfg->lcfg_command) { |
d7e09d03 PT |
795 | case LCFG_ATTACH: { |
796 | err = class_attach(lcfg); | |
d212afd9 | 797 | goto out; |
d7e09d03 PT |
798 | } |
799 | case LCFG_ADD_UUID: { | |
55f5a824 GKH |
800 | CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid %#llx (%s)\n", |
801 | lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid, | |
802 | libcfs_nid2str(lcfg->lcfg_nid)); | |
d7e09d03 PT |
803 | |
804 | err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid); | |
d212afd9 | 805 | goto out; |
d7e09d03 PT |
806 | } |
807 | case LCFG_DEL_UUID: { | |
808 | CDEBUG(D_IOCTL, "removing mappings for uuid %s\n", | |
809 | (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0) | |
810 | ? "<all uuids>" : lustre_cfg_string(lcfg, 1)); | |
811 | ||
812 | err = class_del_uuid(lustre_cfg_string(lcfg, 1)); | |
d212afd9 | 813 | goto out; |
d7e09d03 PT |
814 | } |
815 | case LCFG_MOUNTOPT: { | |
816 | CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n", | |
817 | lustre_cfg_string(lcfg, 1), | |
818 | lustre_cfg_string(lcfg, 2), | |
819 | lustre_cfg_string(lcfg, 3)); | |
820 | /* set these mount options somewhere, so ll_fill_super | |
6ba59179 OD |
821 | * can find them. |
822 | */ | |
d7e09d03 PT |
823 | err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1), |
824 | lustre_cfg_string(lcfg, 1), | |
825 | LUSTRE_CFG_BUFLEN(lcfg, 2), | |
826 | lustre_cfg_string(lcfg, 2), | |
827 | LUSTRE_CFG_BUFLEN(lcfg, 3), | |
828 | lustre_cfg_string(lcfg, 3)); | |
d212afd9 | 829 | goto out; |
d7e09d03 PT |
830 | } |
831 | case LCFG_DEL_MOUNTOPT: { | |
832 | CDEBUG(D_IOCTL, "mountopt: profile %s\n", | |
833 | lustre_cfg_string(lcfg, 1)); | |
834 | class_del_profile(lustre_cfg_string(lcfg, 1)); | |
d212afd9 JL |
835 | err = 0; |
836 | goto out; | |
d7e09d03 PT |
837 | } |
838 | case LCFG_SET_TIMEOUT: { | |
839 | CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n", | |
840 | obd_timeout, lcfg->lcfg_num); | |
841 | obd_timeout = max(lcfg->lcfg_num, 1U); | |
842 | obd_timeout_set = 1; | |
d212afd9 JL |
843 | err = 0; |
844 | goto out; | |
d7e09d03 PT |
845 | } |
846 | case LCFG_SET_LDLM_TIMEOUT: { | |
082a3344 | 847 | /* ldlm_timeout is not used on the client */ |
d212afd9 JL |
848 | err = 0; |
849 | goto out; | |
d7e09d03 PT |
850 | } |
851 | case LCFG_SET_UPCALL: { | |
852 | LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n"); | |
853 | /* COMPAT_146 Don't fail on old configs */ | |
d212afd9 JL |
854 | err = 0; |
855 | goto out; | |
d7e09d03 PT |
856 | } |
857 | case LCFG_MARKER: { | |
858 | struct cfg_marker *marker; | |
50ffcb7e | 859 | |
d7e09d03 PT |
860 | marker = lustre_cfg_buf(lcfg, 1); |
861 | CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step, | |
862 | marker->cm_flags, marker->cm_tgtname, marker->cm_comment); | |
d212afd9 JL |
863 | err = 0; |
864 | goto out; | |
d7e09d03 PT |
865 | } |
866 | case LCFG_PARAM: { | |
867 | char *tmp; | |
868 | /* llite has no obd */ | |
869 | if ((class_match_param(lustre_cfg_string(lcfg, 1), | |
ea7893bb | 870 | PARAM_LLITE, NULL) == 0) && |
d7e09d03 PT |
871 | client_process_config) { |
872 | err = (*client_process_config)(lcfg); | |
d212afd9 | 873 | goto out; |
d7e09d03 PT |
874 | } else if ((class_match_param(lustre_cfg_string(lcfg, 1), |
875 | PARAM_SYS, &tmp) == 0)) { | |
876 | /* Global param settings */ | |
877 | err = class_set_global(tmp, lcfg->lcfg_num, lcfg); | |
878 | /* | |
879 | * Client or server should not fail to mount if | |
880 | * it hits an unknown configuration parameter. | |
881 | */ | |
882 | if (err != 0) | |
883 | CWARN("Ignoring unknown param %s\n", tmp); | |
884 | ||
d212afd9 JL |
885 | err = 0; |
886 | goto out; | |
d7e09d03 PT |
887 | } else if ((class_match_param(lustre_cfg_string(lcfg, 1), |
888 | PARAM_QUOTA, &tmp) == 0) && | |
889 | quota_process_config) { | |
890 | err = (*quota_process_config)(lcfg); | |
d212afd9 | 891 | goto out; |
d7e09d03 | 892 | } |
7d4bae45 | 893 | |
d7e09d03 PT |
894 | break; |
895 | } | |
7d4bae45 AB |
896 | case LCFG_SET_PARAM: { |
897 | err = process_param2_config(lcfg); | |
d212afd9 | 898 | goto out; |
7d4bae45 | 899 | } |
d7e09d03 | 900 | } |
d7e09d03 PT |
901 | /* Commands that require a device */ |
902 | obd = class_name2obd(lustre_cfg_string(lcfg, 0)); | |
dd550e40 | 903 | if (!obd) { |
d7e09d03 PT |
904 | if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) |
905 | CERROR("this lcfg command requires a device name\n"); | |
906 | else | |
907 | CERROR("no device for: %s\n", | |
908 | lustre_cfg_string(lcfg, 0)); | |
909 | ||
d212afd9 JL |
910 | err = -EINVAL; |
911 | goto out; | |
d7e09d03 PT |
912 | } |
913 | ||
a58a38ac | 914 | switch (lcfg->lcfg_command) { |
d7e09d03 PT |
915 | case LCFG_SETUP: { |
916 | err = class_setup(obd, lcfg); | |
d212afd9 | 917 | goto out; |
d7e09d03 PT |
918 | } |
919 | case LCFG_DETACH: { | |
920 | err = class_detach(obd, lcfg); | |
d212afd9 JL |
921 | err = 0; |
922 | goto out; | |
d7e09d03 PT |
923 | } |
924 | case LCFG_CLEANUP: { | |
925 | err = class_cleanup(obd, lcfg); | |
d212afd9 JL |
926 | err = 0; |
927 | goto out; | |
d7e09d03 PT |
928 | } |
929 | case LCFG_ADD_CONN: { | |
930 | err = class_add_conn(obd, lcfg); | |
d212afd9 JL |
931 | err = 0; |
932 | goto out; | |
d7e09d03 PT |
933 | } |
934 | case LCFG_DEL_CONN: { | |
935 | err = class_del_conn(obd, lcfg); | |
d212afd9 JL |
936 | err = 0; |
937 | goto out; | |
d7e09d03 PT |
938 | } |
939 | case LCFG_POOL_NEW: { | |
940 | err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2)); | |
55df5fad JL |
941 | err = 0; |
942 | goto out; | |
d7e09d03 PT |
943 | } |
944 | case LCFG_POOL_ADD: { | |
945 | err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2), | |
946 | lustre_cfg_string(lcfg, 3)); | |
55df5fad JL |
947 | err = 0; |
948 | goto out; | |
d7e09d03 PT |
949 | } |
950 | case LCFG_POOL_REM: { | |
951 | err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2), | |
952 | lustre_cfg_string(lcfg, 3)); | |
55df5fad JL |
953 | err = 0; |
954 | goto out; | |
d7e09d03 PT |
955 | } |
956 | case LCFG_POOL_DEL: { | |
957 | err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2)); | |
55df5fad JL |
958 | err = 0; |
959 | goto out; | |
d7e09d03 PT |
960 | } |
961 | default: { | |
962 | err = obd_process_config(obd, sizeof(*lcfg), lcfg); | |
d212afd9 | 963 | goto out; |
d7e09d03 PT |
964 | |
965 | } | |
966 | } | |
967 | out: | |
968 | if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) { | |
969 | CWARN("Ignoring error %d on optional command %#x\n", err, | |
970 | lcfg->lcfg_command); | |
971 | err = 0; | |
972 | } | |
973 | return err; | |
974 | } | |
975 | EXPORT_SYMBOL(class_process_config); | |
976 | ||
977 | int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars, | |
978 | struct lustre_cfg *lcfg, void *data) | |
979 | { | |
980 | struct lprocfs_vars *var; | |
73bb1da6 PT |
981 | struct file fakefile; |
982 | struct seq_file fake_seqfile; | |
d7e09d03 PT |
983 | char *key, *sval; |
984 | int i, keylen, vallen; | |
985 | int matched = 0, j = 0; | |
986 | int rc = 0; | |
987 | int skip = 0; | |
d7e09d03 PT |
988 | |
989 | if (lcfg->lcfg_command != LCFG_PARAM) { | |
990 | CERROR("Unknown command: %d\n", lcfg->lcfg_command); | |
0a3bdb00 | 991 | return -EINVAL; |
d7e09d03 PT |
992 | } |
993 | ||
73bb1da6 PT |
994 | /* fake a seq file so that var->fops->write can work... */ |
995 | fakefile.private_data = &fake_seqfile; | |
996 | fake_seqfile.private = data; | |
d7e09d03 | 997 | /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt |
6ba59179 OD |
998 | * or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar |
999 | * or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 | |
1000 | */ | |
d7e09d03 PT |
1001 | for (i = 1; i < lcfg->lcfg_bufcount; i++) { |
1002 | key = lustre_cfg_buf(lcfg, i); | |
1003 | /* Strip off prefix */ | |
1004 | class_match_param(key, prefix, &key); | |
1005 | sval = strchr(key, '='); | |
1006 | if (!sval || (*(sval + 1) == 0)) { | |
1007 | CERROR("Can't parse param %s (missing '=')\n", key); | |
1008 | /* rc = -EINVAL; continue parsing other params */ | |
1009 | continue; | |
1010 | } | |
1011 | keylen = sval - key; | |
1012 | sval++; | |
1013 | vallen = strlen(sval); | |
1014 | matched = 0; | |
1015 | j = 0; | |
1016 | /* Search proc entries */ | |
1017 | while (lvars[j].name) { | |
1018 | var = &lvars[j]; | |
24af3e16 | 1019 | if (!class_match_param(key, var->name, NULL) |
ea7893bb | 1020 | && keylen == strlen(var->name)) { |
d7e09d03 PT |
1021 | matched++; |
1022 | rc = -EROFS; | |
73bb1da6 | 1023 | if (var->fops && var->fops->write) { |
d7e09d03 | 1024 | mm_segment_t oldfs; |
50ffcb7e | 1025 | |
d7e09d03 PT |
1026 | oldfs = get_fs(); |
1027 | set_fs(KERNEL_DS); | |
73bb1da6 PT |
1028 | rc = (var->fops->write)(&fakefile, sval, |
1029 | vallen, NULL); | |
d7e09d03 PT |
1030 | set_fs(oldfs); |
1031 | } | |
1032 | break; | |
1033 | } | |
1034 | j++; | |
1035 | } | |
1036 | if (!matched) { | |
1037 | /* If the prefix doesn't match, return error so we | |
6ba59179 OD |
1038 | * can pass it down the stack |
1039 | */ | |
d7e09d03 | 1040 | if (strnchr(key, keylen, '.')) |
defa220f | 1041 | return -ENOSYS; |
d7e09d03 PT |
1042 | CERROR("%s: unknown param %s\n", |
1043 | (char *)lustre_cfg_string(lcfg, 0), key); | |
1044 | /* rc = -EINVAL; continue parsing other params */ | |
1045 | skip++; | |
1046 | } else if (rc < 0) { | |
1047 | CERROR("writing proc entry %s err %d\n", | |
1048 | var->name, rc); | |
1049 | rc = 0; | |
1050 | } else { | |
1051 | CDEBUG(D_CONFIG, "%s.%.*s: Set parameter %.*s=%s\n", | |
926d6fb2 OD |
1052 | lustre_cfg_string(lcfg, 0), |
1053 | (int)strlen(prefix) - 1, prefix, | |
1054 | (int)(sval - key - 1), key, sval); | |
d7e09d03 PT |
1055 | } |
1056 | } | |
1057 | ||
1058 | if (rc > 0) | |
1059 | rc = 0; | |
1060 | if (!rc && skip) | |
1061 | rc = skip; | |
0a3bdb00 | 1062 | return rc; |
d7e09d03 PT |
1063 | } |
1064 | EXPORT_SYMBOL(class_process_proc_param); | |
1065 | ||
1066 | extern int lustre_check_exclusion(struct super_block *sb, char *svname); | |
1067 | ||
1068 | /** Parse a configuration llog, doing various manipulations on them | |
1069 | * for various reasons, (modifications for compatibility, skip obsolete | |
1070 | * records, change uuids, etc), then class_process_config() resulting | |
1071 | * net records. | |
1072 | */ | |
1073 | int class_config_llog_handler(const struct lu_env *env, | |
1074 | struct llog_handle *handle, | |
1075 | struct llog_rec_hdr *rec, void *data) | |
1076 | { | |
1077 | struct config_llog_instance *clli = data; | |
1078 | int cfg_len = rec->lrh_len; | |
bdbb0512 | 1079 | char *cfg_buf = (char *) (rec + 1); |
d7e09d03 | 1080 | int rc = 0; |
d7e09d03 | 1081 | |
d7e09d03 PT |
1082 | switch (rec->lrh_type) { |
1083 | case OBD_CFG_REC: { | |
1084 | struct lustre_cfg *lcfg, *lcfg_new; | |
1085 | struct lustre_cfg_bufs bufs; | |
1086 | char *inst_name = NULL; | |
1087 | int inst_len = 0; | |
1088 | int inst = 0, swab = 0; | |
1089 | ||
1090 | lcfg = (struct lustre_cfg *)cfg_buf; | |
1091 | if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) { | |
1092 | lustre_swab_lustre_cfg(lcfg); | |
1093 | swab = 1; | |
1094 | } | |
1095 | ||
1096 | rc = lustre_cfg_sanity_check(cfg_buf, cfg_len); | |
1097 | if (rc) | |
d212afd9 | 1098 | goto out; |
d7e09d03 PT |
1099 | |
1100 | /* Figure out config state info */ | |
1101 | if (lcfg->lcfg_command == LCFG_MARKER) { | |
1102 | struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1); | |
50ffcb7e | 1103 | |
d7e09d03 PT |
1104 | lustre_swab_cfg_marker(marker, swab, |
1105 | LUSTRE_CFG_BUFLEN(lcfg, 1)); | |
1106 | CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n", | |
1107 | clli->cfg_flags, marker->cm_flags); | |
1108 | if (marker->cm_flags & CM_START) { | |
1109 | /* all previous flags off */ | |
1110 | clli->cfg_flags = CFG_F_MARKER; | |
1111 | if (marker->cm_flags & CM_SKIP) { | |
1112 | clli->cfg_flags |= CFG_F_SKIP; | |
1113 | CDEBUG(D_CONFIG, "SKIP #%d\n", | |
1114 | marker->cm_step); | |
1115 | } else if ((marker->cm_flags & CM_EXCLUDE) || | |
1116 | (clli->cfg_sb && | |
1117 | lustre_check_exclusion(clli->cfg_sb, | |
1118 | marker->cm_tgtname))) { | |
1119 | clli->cfg_flags |= CFG_F_EXCLUDE; | |
1120 | CDEBUG(D_CONFIG, "EXCLUDE %d\n", | |
1121 | marker->cm_step); | |
1122 | } | |
1123 | } else if (marker->cm_flags & CM_END) { | |
1124 | clli->cfg_flags = 0; | |
1125 | } | |
1126 | } | |
1127 | /* A config command without a start marker before it is | |
6ba59179 OD |
1128 | * illegal (post 146) |
1129 | */ | |
d7e09d03 PT |
1130 | if (!(clli->cfg_flags & CFG_F_COMPAT146) && |
1131 | !(clli->cfg_flags & CFG_F_MARKER) && | |
1132 | (lcfg->lcfg_command != LCFG_MARKER)) { | |
2d00bd17 | 1133 | CWARN("Config not inside markers, ignoring! (inst: %p, uuid: %s, flags: %#x)\n", |
d7e09d03 PT |
1134 | clli->cfg_instance, |
1135 | clli->cfg_uuid.uuid, clli->cfg_flags); | |
1136 | clli->cfg_flags |= CFG_F_SKIP; | |
1137 | } | |
1138 | if (clli->cfg_flags & CFG_F_SKIP) { | |
1139 | CDEBUG(D_CONFIG, "skipping %#x\n", | |
1140 | clli->cfg_flags); | |
1141 | rc = 0; | |
1142 | /* No processing! */ | |
1143 | break; | |
1144 | } | |
1145 | ||
1146 | /* | |
1147 | * For interoperability between 1.8 and 2.0, | |
1148 | * rename "mds" obd device type to "mdt". | |
1149 | */ | |
1150 | { | |
1151 | char *typename = lustre_cfg_string(lcfg, 1); | |
1152 | char *index = lustre_cfg_string(lcfg, 2); | |
1153 | ||
1154 | if ((lcfg->lcfg_command == LCFG_ATTACH && typename && | |
1155 | strcmp(typename, "mds") == 0)) { | |
2d00bd17 | 1156 | CWARN("For 1.8 interoperability, rename obd type from mds to mdt\n"); |
d7e09d03 PT |
1157 | typename[2] = 't'; |
1158 | } | |
1159 | if ((lcfg->lcfg_command == LCFG_SETUP && index && | |
1160 | strcmp(index, "type") == 0)) { | |
2d00bd17 | 1161 | CDEBUG(D_INFO, "For 1.8 interoperability, set this index to '0'\n"); |
d7e09d03 PT |
1162 | index[0] = '0'; |
1163 | index[1] = 0; | |
1164 | } | |
1165 | } | |
1166 | ||
f1b58c5a NC |
1167 | if (clli->cfg_flags & CFG_F_EXCLUDE) { |
1168 | CDEBUG(D_CONFIG, "cmd: %x marked EXCLUDED\n", | |
1169 | lcfg->lcfg_command); | |
1170 | if (lcfg->lcfg_command == LCFG_LOV_ADD_OBD) | |
1171 | /* Add inactive instead */ | |
1172 | lcfg->lcfg_command = LCFG_LOV_ADD_INA; | |
1173 | } | |
d7e09d03 PT |
1174 | |
1175 | lustre_cfg_bufs_init(&bufs, lcfg); | |
1176 | ||
1177 | if (clli && clli->cfg_instance && | |
b2952d62 | 1178 | LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) { |
d7e09d03 PT |
1179 | inst = 1; |
1180 | inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) + | |
1181 | sizeof(clli->cfg_instance) * 2 + 4; | |
222a7e91 SB |
1182 | inst_name = kasprintf(GFP_NOFS, "%s-%p", |
1183 | lustre_cfg_string(lcfg, 0), | |
1184 | clli->cfg_instance); | |
485640b5 | 1185 | if (!inst_name) { |
d212afd9 JL |
1186 | rc = -ENOMEM; |
1187 | goto out; | |
1188 | } | |
d7e09d03 PT |
1189 | lustre_cfg_bufs_set_string(&bufs, 0, inst_name); |
1190 | CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n", | |
1191 | lcfg->lcfg_command, inst_name); | |
1192 | } | |
1193 | ||
1194 | /* we override the llog's uuid for clients, to insure they | |
6ba59179 OD |
1195 | * are unique |
1196 | */ | |
cce3c2da | 1197 | if (clli && clli->cfg_instance && |
d7e09d03 PT |
1198 | lcfg->lcfg_command == LCFG_ATTACH) { |
1199 | lustre_cfg_bufs_set_string(&bufs, 2, | |
1200 | clli->cfg_uuid.uuid); | |
1201 | } | |
1202 | /* | |
1203 | * sptlrpc config record, we expect 2 data segments: | |
1204 | * [0]: fs_name/target_name, | |
1205 | * [1]: rule string | |
1206 | * moving them to index [1] and [2], and insert MGC's | |
1207 | * obdname at index [0]. | |
1208 | */ | |
dd550e40 | 1209 | if (clli && !clli->cfg_instance && |
d7e09d03 PT |
1210 | lcfg->lcfg_command == LCFG_SPTLRPC_CONF) { |
1211 | lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1], | |
1212 | bufs.lcfg_buflen[1]); | |
1213 | lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0], | |
1214 | bufs.lcfg_buflen[0]); | |
1215 | lustre_cfg_bufs_set_string(&bufs, 0, | |
1216 | clli->cfg_obdname); | |
1217 | } | |
1218 | ||
1219 | lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs); | |
1220 | ||
1221 | lcfg_new->lcfg_num = lcfg->lcfg_num; | |
1222 | lcfg_new->lcfg_flags = lcfg->lcfg_flags; | |
1223 | ||
1224 | /* XXX Hack to try to remain binary compatible with | |
6ba59179 OD |
1225 | * pre-newconfig logs |
1226 | */ | |
d7e09d03 PT |
1227 | if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */ |
1228 | (lcfg->lcfg_nid >> 32) == 0) { | |
1229 | __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff); | |
1230 | ||
1231 | lcfg_new->lcfg_nid = | |
1232 | LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr); | |
1233 | CWARN("Converted pre-newconfig NAL %d NID %x to %s\n", | |
1234 | lcfg->lcfg_nal, addr, | |
1235 | libcfs_nid2str(lcfg_new->lcfg_nid)); | |
1236 | } else { | |
1237 | lcfg_new->lcfg_nid = lcfg->lcfg_nid; | |
1238 | } | |
1239 | ||
1240 | lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */ | |
1241 | ||
1242 | rc = class_process_config(lcfg_new); | |
1243 | lustre_cfg_free(lcfg_new); | |
1244 | ||
1245 | if (inst) | |
d7279044 | 1246 | kfree(inst_name); |
d7e09d03 PT |
1247 | break; |
1248 | } | |
1249 | default: | |
1250 | CERROR("Unknown llog record type %#x encountered\n", | |
1251 | rec->lrh_type); | |
1252 | break; | |
1253 | } | |
1254 | out: | |
1255 | if (rc) { | |
1256 | CERROR("%s: cfg command failed: rc = %d\n", | |
1257 | handle->lgh_ctxt->loc_obd->obd_name, rc); | |
1258 | class_config_dump_handler(NULL, handle, rec, data); | |
1259 | } | |
0a3bdb00 | 1260 | return rc; |
d7e09d03 PT |
1261 | } |
1262 | EXPORT_SYMBOL(class_config_llog_handler); | |
1263 | ||
1264 | int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt, | |
1265 | char *name, struct config_llog_instance *cfg) | |
1266 | { | |
1267 | struct llog_process_cat_data cd = {0, 0}; | |
1268 | struct llog_handle *llh; | |
1269 | llog_cb_t callback; | |
1270 | int rc; | |
d7e09d03 PT |
1271 | |
1272 | CDEBUG(D_INFO, "looking up llog %s\n", name); | |
1273 | rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS); | |
1274 | if (rc) | |
0a3bdb00 | 1275 | return rc; |
d7e09d03 PT |
1276 | |
1277 | rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL); | |
1278 | if (rc) | |
d212afd9 | 1279 | goto parse_out; |
d7e09d03 PT |
1280 | |
1281 | /* continue processing from where we last stopped to end-of-log */ | |
1282 | if (cfg) { | |
1283 | cd.lpcd_first_idx = cfg->cfg_last_idx; | |
1284 | callback = cfg->cfg_callback; | |
cce3c2da | 1285 | LASSERT(callback); |
d7e09d03 PT |
1286 | } else { |
1287 | callback = class_config_llog_handler; | |
1288 | } | |
1289 | ||
1290 | cd.lpcd_last_idx = 0; | |
1291 | ||
1292 | rc = llog_process(env, llh, callback, cfg, &cd); | |
1293 | ||
1294 | CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name, | |
1295 | cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc); | |
1296 | if (cfg) | |
1297 | cfg->cfg_last_idx = cd.lpcd_last_idx; | |
1298 | ||
1299 | parse_out: | |
1300 | llog_close(env, llh); | |
0a3bdb00 | 1301 | return rc; |
d7e09d03 PT |
1302 | } |
1303 | EXPORT_SYMBOL(class_config_parse_llog); | |
1304 | ||
1305 | /** | |
1306 | * parse config record and output dump in supplied buffer. | |
1307 | * This is separated from class_config_dump_handler() to use | |
1308 | * for ioctl needs as well | |
1309 | */ | |
d63414eb SB |
1310 | static int class_config_parse_rec(struct llog_rec_hdr *rec, char *buf, |
1311 | int size) | |
d7e09d03 PT |
1312 | { |
1313 | struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1); | |
1314 | char *ptr = buf; | |
1315 | char *end = buf + size; | |
1316 | int rc = 0; | |
1317 | ||
d7e09d03 PT |
1318 | LASSERT(rec->lrh_type == OBD_CFG_REC); |
1319 | rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len); | |
1320 | if (rc < 0) | |
0a3bdb00 | 1321 | return rc; |
d7e09d03 PT |
1322 | |
1323 | ptr += snprintf(ptr, end-ptr, "cmd=%05x ", lcfg->lcfg_command); | |
1324 | if (lcfg->lcfg_flags) | |
1325 | ptr += snprintf(ptr, end-ptr, "flags=%#08x ", | |
1326 | lcfg->lcfg_flags); | |
1327 | ||
1328 | if (lcfg->lcfg_num) | |
1329 | ptr += snprintf(ptr, end-ptr, "num=%#08x ", lcfg->lcfg_num); | |
1330 | ||
80feb1ef DE |
1331 | if (lcfg->lcfg_nid) { |
1332 | char nidstr[LNET_NIDSTR_SIZE]; | |
1333 | ||
1334 | libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr)); | |
55f5a824 | 1335 | ptr += snprintf(ptr, end-ptr, "nid=%s(%#llx)\n ", |
80feb1ef DE |
1336 | nidstr, lcfg->lcfg_nid); |
1337 | } | |
d7e09d03 PT |
1338 | |
1339 | if (lcfg->lcfg_command == LCFG_MARKER) { | |
1340 | struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1); | |
1341 | ||
1342 | ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'", | |
1343 | marker->cm_step, marker->cm_flags, | |
1344 | marker->cm_tgtname, marker->cm_comment); | |
1345 | } else { | |
1346 | int i; | |
1347 | ||
1348 | for (i = 0; i < lcfg->lcfg_bufcount; i++) { | |
1349 | ptr += snprintf(ptr, end-ptr, "%d:%s ", i, | |
1350 | lustre_cfg_string(lcfg, i)); | |
1351 | } | |
1352 | } | |
1353 | /* return consumed bytes */ | |
1354 | rc = ptr - buf; | |
0a3bdb00 | 1355 | return rc; |
d7e09d03 PT |
1356 | } |
1357 | ||
1358 | int class_config_dump_handler(const struct lu_env *env, | |
1359 | struct llog_handle *handle, | |
1360 | struct llog_rec_hdr *rec, void *data) | |
1361 | { | |
1362 | char *outstr; | |
1363 | int rc = 0; | |
1364 | ||
d7279044 | 1365 | outstr = kzalloc(256, GFP_NOFS); |
485640b5 | 1366 | if (!outstr) |
0a3bdb00 | 1367 | return -ENOMEM; |
d7e09d03 PT |
1368 | |
1369 | if (rec->lrh_type == OBD_CFG_REC) { | |
1370 | class_config_parse_rec(rec, outstr, 256); | |
1371 | LCONSOLE(D_WARNING, " %s\n", outstr); | |
1372 | } else { | |
1373 | LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type); | |
1374 | rc = -EINVAL; | |
1375 | } | |
1376 | ||
d7279044 | 1377 | kfree(outstr); |
0a3bdb00 | 1378 | return rc; |
d7e09d03 PT |
1379 | } |
1380 | ||
d7e09d03 PT |
1381 | /** Call class_cleanup and class_detach. |
1382 | * "Manual" only in the sense that we're faking lcfg commands. | |
1383 | */ | |
1384 | int class_manual_cleanup(struct obd_device *obd) | |
1385 | { | |
1386 | char flags[3] = ""; | |
1387 | struct lustre_cfg *lcfg; | |
1388 | struct lustre_cfg_bufs bufs; | |
1389 | int rc; | |
d7e09d03 PT |
1390 | |
1391 | if (!obd) { | |
1392 | CERROR("empty cleanup\n"); | |
0a3bdb00 | 1393 | return -EALREADY; |
d7e09d03 PT |
1394 | } |
1395 | ||
1396 | if (obd->obd_force) | |
1397 | strcat(flags, "F"); | |
1398 | if (obd->obd_fail) | |
1399 | strcat(flags, "A"); | |
1400 | ||
1401 | CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n", | |
1402 | obd->obd_name, flags); | |
1403 | ||
1404 | lustre_cfg_bufs_reset(&bufs, obd->obd_name); | |
1405 | lustre_cfg_bufs_set_string(&bufs, 1, flags); | |
1406 | lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs); | |
1407 | if (!lcfg) | |
0a3bdb00 | 1408 | return -ENOMEM; |
d7e09d03 PT |
1409 | |
1410 | rc = class_process_config(lcfg); | |
1411 | if (rc) { | |
1412 | CERROR("cleanup failed %d: %s\n", rc, obd->obd_name); | |
d212afd9 | 1413 | goto out; |
d7e09d03 PT |
1414 | } |
1415 | ||
1416 | /* the lcfg is almost the same for both ops */ | |
1417 | lcfg->lcfg_command = LCFG_DETACH; | |
1418 | rc = class_process_config(lcfg); | |
1419 | if (rc) | |
1420 | CERROR("detach failed %d: %s\n", rc, obd->obd_name); | |
1421 | out: | |
1422 | lustre_cfg_free(lcfg); | |
0a3bdb00 | 1423 | return rc; |
d7e09d03 PT |
1424 | } |
1425 | EXPORT_SYMBOL(class_manual_cleanup); | |
1426 | ||
1427 | /* | |
1428 | * uuid<->export lustre hash operations | |
1429 | */ | |
1430 | ||
1431 | static unsigned | |
6da6eabe | 1432 | uuid_hash(struct cfs_hash *hs, const void *key, unsigned mask) |
d7e09d03 PT |
1433 | { |
1434 | return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid, | |
1435 | sizeof(((struct obd_uuid *)key)->uuid), mask); | |
1436 | } | |
1437 | ||
1438 | static void * | |
1439 | uuid_key(struct hlist_node *hnode) | |
1440 | { | |
1441 | struct obd_export *exp; | |
1442 | ||
1443 | exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash); | |
1444 | ||
1445 | return &exp->exp_client_uuid; | |
1446 | } | |
1447 | ||
1448 | /* | |
1449 | * NOTE: It is impossible to find an export that is in failed | |
1450 | * state with this function | |
1451 | */ | |
1452 | static int | |
1453 | uuid_keycmp(const void *key, struct hlist_node *hnode) | |
1454 | { | |
1455 | struct obd_export *exp; | |
1456 | ||
1457 | LASSERT(key); | |
1458 | exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash); | |
1459 | ||
1460 | return obd_uuid_equals(key, &exp->exp_client_uuid) && | |
1461 | !exp->exp_failed; | |
1462 | } | |
1463 | ||
1464 | static void * | |
1465 | uuid_export_object(struct hlist_node *hnode) | |
1466 | { | |
1467 | return hlist_entry(hnode, struct obd_export, exp_uuid_hash); | |
1468 | } | |
1469 | ||
1470 | static void | |
6da6eabe | 1471 | uuid_export_get(struct cfs_hash *hs, struct hlist_node *hnode) |
d7e09d03 PT |
1472 | { |
1473 | struct obd_export *exp; | |
1474 | ||
1475 | exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash); | |
1476 | class_export_get(exp); | |
1477 | } | |
1478 | ||
1479 | static void | |
6da6eabe | 1480 | uuid_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode) |
d7e09d03 PT |
1481 | { |
1482 | struct obd_export *exp; | |
1483 | ||
1484 | exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash); | |
1485 | class_export_put(exp); | |
1486 | } | |
1487 | ||
db9fc06b | 1488 | static struct cfs_hash_ops uuid_hash_ops = { |
d7e09d03 | 1489 | .hs_hash = uuid_hash, |
db9fc06b | 1490 | .hs_key = uuid_key, |
d7e09d03 PT |
1491 | .hs_keycmp = uuid_keycmp, |
1492 | .hs_object = uuid_export_object, | |
db9fc06b | 1493 | .hs_get = uuid_export_get, |
d7e09d03 PT |
1494 | .hs_put_locked = uuid_export_put_locked, |
1495 | }; |