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1
2#include <linux/ceph/ceph_debug.h>
3#include <linux/backing-dev.h>
4#include <linux/ctype.h>
5#include <linux/fs.h>
6#include <linux/inet.h>
7#include <linux/in6.h>
8#include <linux/key.h>
9#include <keys/ceph-type.h>
10#include <linux/module.h>
11#include <linux/mount.h>
12#include <linux/parser.h>
13#include <linux/sched.h>
14#include <linux/seq_file.h>
15#include <linux/slab.h>
16#include <linux/statfs.h>
17#include <linux/string.h>
18
19
20#include <linux/ceph/libceph.h>
21#include <linux/ceph/debugfs.h>
22#include <linux/ceph/decode.h>
23#include <linux/ceph/mon_client.h>
24#include <linux/ceph/auth.h>
25#include "crypto.h"
26
27
28
29/*
30 * find filename portion of a path (/foo/bar/baz -> baz)
31 */
32const char *ceph_file_part(const char *s, int len)
33{
34 const char *e = s + len;
35
36 while (e != s && *(e-1) != '/')
37 e--;
38 return e;
39}
40EXPORT_SYMBOL(ceph_file_part);
41
42const char *ceph_msg_type_name(int type)
43{
44 switch (type) {
45 case CEPH_MSG_SHUTDOWN: return "shutdown";
46 case CEPH_MSG_PING: return "ping";
47 case CEPH_MSG_AUTH: return "auth";
48 case CEPH_MSG_AUTH_REPLY: return "auth_reply";
49 case CEPH_MSG_MON_MAP: return "mon_map";
50 case CEPH_MSG_MON_GET_MAP: return "mon_get_map";
51 case CEPH_MSG_MON_SUBSCRIBE: return "mon_subscribe";
52 case CEPH_MSG_MON_SUBSCRIBE_ACK: return "mon_subscribe_ack";
53 case CEPH_MSG_STATFS: return "statfs";
54 case CEPH_MSG_STATFS_REPLY: return "statfs_reply";
55 case CEPH_MSG_MDS_MAP: return "mds_map";
56 case CEPH_MSG_CLIENT_SESSION: return "client_session";
57 case CEPH_MSG_CLIENT_RECONNECT: return "client_reconnect";
58 case CEPH_MSG_CLIENT_REQUEST: return "client_request";
59 case CEPH_MSG_CLIENT_REQUEST_FORWARD: return "client_request_forward";
60 case CEPH_MSG_CLIENT_REPLY: return "client_reply";
61 case CEPH_MSG_CLIENT_CAPS: return "client_caps";
62 case CEPH_MSG_CLIENT_CAPRELEASE: return "client_cap_release";
63 case CEPH_MSG_CLIENT_SNAP: return "client_snap";
64 case CEPH_MSG_CLIENT_LEASE: return "client_lease";
65 case CEPH_MSG_OSD_MAP: return "osd_map";
66 case CEPH_MSG_OSD_OP: return "osd_op";
67 case CEPH_MSG_OSD_OPREPLY: return "osd_opreply";
68 case CEPH_MSG_WATCH_NOTIFY: return "watch_notify";
69 default: return "unknown";
70 }
71}
72EXPORT_SYMBOL(ceph_msg_type_name);
73
74/*
75 * Initially learn our fsid, or verify an fsid matches.
76 */
77int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid)
78{
79 if (client->have_fsid) {
80 if (ceph_fsid_compare(&client->fsid, fsid)) {
81 pr_err("bad fsid, had %pU got %pU",
82 &client->fsid, fsid);
83 return -1;
84 }
85 } else {
86 pr_info("client%lld fsid %pU\n", ceph_client_id(client), fsid);
87 memcpy(&client->fsid, fsid, sizeof(*fsid));
88 }
89 return 0;
90}
91EXPORT_SYMBOL(ceph_check_fsid);
92
93static int strcmp_null(const char *s1, const char *s2)
94{
95 if (!s1 && !s2)
96 return 0;
97 if (s1 && !s2)
98 return -1;
99 if (!s1 && s2)
100 return 1;
101 return strcmp(s1, s2);
102}
103
104int ceph_compare_options(struct ceph_options *new_opt,
105 struct ceph_client *client)
106{
107 struct ceph_options *opt1 = new_opt;
108 struct ceph_options *opt2 = client->options;
109 int ofs = offsetof(struct ceph_options, mon_addr);
110 int i;
111 int ret;
112
113 ret = memcmp(opt1, opt2, ofs);
114 if (ret)
115 return ret;
116
117 ret = strcmp_null(opt1->name, opt2->name);
118 if (ret)
119 return ret;
120
121 if (opt1->key && !opt2->key)
122 return -1;
123 if (!opt1->key && opt2->key)
124 return 1;
125 if (opt1->key && opt2->key) {
126 if (opt1->key->type != opt2->key->type)
127 return -1;
128 if (opt1->key->created.tv_sec != opt2->key->created.tv_sec)
129 return -1;
130 if (opt1->key->created.tv_nsec != opt2->key->created.tv_nsec)
131 return -1;
132 if (opt1->key->len != opt2->key->len)
133 return -1;
134 if (opt1->key->key && !opt2->key->key)
135 return -1;
136 if (!opt1->key->key && opt2->key->key)
137 return 1;
138 if (opt1->key->key && opt2->key->key) {
139 ret = memcmp(opt1->key->key, opt2->key->key, opt1->key->len);
140 if (ret)
141 return ret;
142 }
143 }
144
145 /* any matching mon ip implies a match */
146 for (i = 0; i < opt1->num_mon; i++) {
147 if (ceph_monmap_contains(client->monc.monmap,
148 &opt1->mon_addr[i]))
149 return 0;
150 }
151 return -1;
152}
153EXPORT_SYMBOL(ceph_compare_options);
154
155
156static int parse_fsid(const char *str, struct ceph_fsid *fsid)
157{
158 int i = 0;
159 char tmp[3];
160 int err = -EINVAL;
161 int d;
162
163 dout("parse_fsid '%s'\n", str);
164 tmp[2] = 0;
165 while (*str && i < 16) {
166 if (ispunct(*str)) {
167 str++;
168 continue;
169 }
170 if (!isxdigit(str[0]) || !isxdigit(str[1]))
171 break;
172 tmp[0] = str[0];
173 tmp[1] = str[1];
174 if (sscanf(tmp, "%x", &d) < 1)
175 break;
176 fsid->fsid[i] = d & 0xff;
177 i++;
178 str += 2;
179 }
180
181 if (i == 16)
182 err = 0;
183 dout("parse_fsid ret %d got fsid %pU", err, fsid);
184 return err;
185}
186
187/*
188 * ceph options
189 */
190enum {
191 Opt_osdtimeout,
192 Opt_osdkeepalivetimeout,
193 Opt_mount_timeout,
194 Opt_osd_idle_ttl,
195 Opt_last_int,
196 /* int args above */
197 Opt_fsid,
198 Opt_name,
199 Opt_secret,
200 Opt_key,
201 Opt_ip,
202 Opt_last_string,
203 /* string args above */
204 Opt_share,
205 Opt_noshare,
206 Opt_crc,
207 Opt_nocrc,
208};
209
210static match_table_t opt_tokens = {
211 {Opt_osdtimeout, "osdtimeout=%d"},
212 {Opt_osdkeepalivetimeout, "osdkeepalive=%d"},
213 {Opt_mount_timeout, "mount_timeout=%d"},
214 {Opt_osd_idle_ttl, "osd_idle_ttl=%d"},
215 /* int args above */
216 {Opt_fsid, "fsid=%s"},
217 {Opt_name, "name=%s"},
218 {Opt_secret, "secret=%s"},
219 {Opt_key, "key=%s"},
220 {Opt_ip, "ip=%s"},
221 /* string args above */
222 {Opt_share, "share"},
223 {Opt_noshare, "noshare"},
224 {Opt_crc, "crc"},
225 {Opt_nocrc, "nocrc"},
226 {-1, NULL}
227};
228
229void ceph_destroy_options(struct ceph_options *opt)
230{
231 dout("destroy_options %p\n", opt);
232 kfree(opt->name);
233 if (opt->key) {
234 ceph_crypto_key_destroy(opt->key);
235 kfree(opt->key);
236 }
237 kfree(opt->mon_addr);
238 kfree(opt);
239}
240EXPORT_SYMBOL(ceph_destroy_options);
241
242/* get secret from key store */
243static int get_secret(struct ceph_crypto_key *dst, const char *name) {
244 struct key *ukey;
245 int key_err;
246 int err = 0;
247 struct ceph_crypto_key *ckey;
248
249 ukey = request_key(&key_type_ceph, name, NULL);
250 if (!ukey || IS_ERR(ukey)) {
251 /* request_key errors don't map nicely to mount(2)
252 errors; don't even try, but still printk */
253 key_err = PTR_ERR(ukey);
254 switch (key_err) {
255 case -ENOKEY:
256 pr_warning("ceph: Mount failed due to key not found: %s\n", name);
257 break;
258 case -EKEYEXPIRED:
259 pr_warning("ceph: Mount failed due to expired key: %s\n", name);
260 break;
261 case -EKEYREVOKED:
262 pr_warning("ceph: Mount failed due to revoked key: %s\n", name);
263 break;
264 default:
265 pr_warning("ceph: Mount failed due to unknown key error"
266 " %d: %s\n", key_err, name);
267 }
268 err = -EPERM;
269 goto out;
270 }
271
272 ckey = ukey->payload.data;
273 err = ceph_crypto_key_clone(dst, ckey);
274 if (err)
275 goto out_key;
276 /* pass through, err is 0 */
277
278out_key:
279 key_put(ukey);
280out:
281 return err;
282}
283
284struct ceph_options *
285ceph_parse_options(char *options, const char *dev_name,
286 const char *dev_name_end,
287 int (*parse_extra_token)(char *c, void *private),
288 void *private)
289{
290 struct ceph_options *opt;
291 const char *c;
292 int err = -ENOMEM;
293 substring_t argstr[MAX_OPT_ARGS];
294
295 opt = kzalloc(sizeof(*opt), GFP_KERNEL);
296 if (!opt)
297 return ERR_PTR(-ENOMEM);
298 opt->mon_addr = kcalloc(CEPH_MAX_MON, sizeof(*opt->mon_addr),
299 GFP_KERNEL);
300 if (!opt->mon_addr)
301 goto out;
302
303 dout("parse_options %p options '%s' dev_name '%s'\n", opt, options,
304 dev_name);
305
306 /* start with defaults */
307 opt->flags = CEPH_OPT_DEFAULT;
308 opt->osd_timeout = CEPH_OSD_TIMEOUT_DEFAULT;
309 opt->osd_keepalive_timeout = CEPH_OSD_KEEPALIVE_DEFAULT;
310 opt->mount_timeout = CEPH_MOUNT_TIMEOUT_DEFAULT; /* seconds */
311 opt->osd_idle_ttl = CEPH_OSD_IDLE_TTL_DEFAULT; /* seconds */
312
313 /* get mon ip(s) */
314 /* ip1[:port1][,ip2[:port2]...] */
315 err = ceph_parse_ips(dev_name, dev_name_end, opt->mon_addr,
316 CEPH_MAX_MON, &opt->num_mon);
317 if (err < 0)
318 goto out;
319
320 /* parse mount options */
321 while ((c = strsep(&options, ",")) != NULL) {
322 int token, intval, ret;
323 if (!*c)
324 continue;
325 err = -EINVAL;
326 token = match_token((char *)c, opt_tokens, argstr);
327 if (token < 0 && parse_extra_token) {
328 /* extra? */
329 err = parse_extra_token((char *)c, private);
330 if (err < 0) {
331 pr_err("bad option at '%s'\n", c);
332 goto out;
333 }
334 continue;
335 }
336 if (token < Opt_last_int) {
337 ret = match_int(&argstr[0], &intval);
338 if (ret < 0) {
339 pr_err("bad mount option arg (not int) "
340 "at '%s'\n", c);
341 continue;
342 }
343 dout("got int token %d val %d\n", token, intval);
344 } else if (token > Opt_last_int && token < Opt_last_string) {
345 dout("got string token %d val %s\n", token,
346 argstr[0].from);
347 } else {
348 dout("got token %d\n", token);
349 }
350 switch (token) {
351 case Opt_ip:
352 err = ceph_parse_ips(argstr[0].from,
353 argstr[0].to,
354 &opt->my_addr,
355 1, NULL);
356 if (err < 0)
357 goto out;
358 opt->flags |= CEPH_OPT_MYIP;
359 break;
360
361 case Opt_fsid:
362 err = parse_fsid(argstr[0].from, &opt->fsid);
363 if (err == 0)
364 opt->flags |= CEPH_OPT_FSID;
365 break;
366 case Opt_name:
367 opt->name = kstrndup(argstr[0].from,
368 argstr[0].to-argstr[0].from,
369 GFP_KERNEL);
370 break;
371 case Opt_secret:
372 opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL);
373 if (!opt->key) {
374 err = -ENOMEM;
375 goto out;
376 }
377 err = ceph_crypto_key_unarmor(opt->key, argstr[0].from);
378 if (err < 0)
379 goto out;
380 break;
381 case Opt_key:
382 opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL);
383 if (!opt->key) {
384 err = -ENOMEM;
385 goto out;
386 }
387 err = get_secret(opt->key, argstr[0].from);
388 if (err < 0)
389 goto out;
390 break;
391
392 /* misc */
393 case Opt_osdtimeout:
394 opt->osd_timeout = intval;
395 break;
396 case Opt_osdkeepalivetimeout:
397 opt->osd_keepalive_timeout = intval;
398 break;
399 case Opt_osd_idle_ttl:
400 opt->osd_idle_ttl = intval;
401 break;
402 case Opt_mount_timeout:
403 opt->mount_timeout = intval;
404 break;
405
406 case Opt_share:
407 opt->flags &= ~CEPH_OPT_NOSHARE;
408 break;
409 case Opt_noshare:
410 opt->flags |= CEPH_OPT_NOSHARE;
411 break;
412
413 case Opt_crc:
414 opt->flags &= ~CEPH_OPT_NOCRC;
415 break;
416 case Opt_nocrc:
417 opt->flags |= CEPH_OPT_NOCRC;
418 break;
419
420 default:
421 BUG_ON(token);
422 }
423 }
424
425 /* success */
426 return opt;
427
428out:
429 ceph_destroy_options(opt);
430 return ERR_PTR(err);
431}
432EXPORT_SYMBOL(ceph_parse_options);
433
434u64 ceph_client_id(struct ceph_client *client)
435{
436 return client->monc.auth->global_id;
437}
438EXPORT_SYMBOL(ceph_client_id);
439
440/*
441 * create a fresh client instance
442 */
443struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private,
444 unsigned int supported_features,
445 unsigned int required_features)
446{
447 struct ceph_client *client;
448 struct ceph_entity_addr *myaddr = NULL;
449 int err = -ENOMEM;
450
451 client = kzalloc(sizeof(*client), GFP_KERNEL);
452 if (client == NULL)
453 return ERR_PTR(-ENOMEM);
454
455 client->private = private;
456 client->options = opt;
457
458 mutex_init(&client->mount_mutex);
459 init_waitqueue_head(&client->auth_wq);
460 client->auth_err = 0;
461
462 client->extra_mon_dispatch = NULL;
463 client->supported_features = CEPH_FEATURE_SUPPORTED_DEFAULT |
464 supported_features;
465 client->required_features = CEPH_FEATURE_REQUIRED_DEFAULT |
466 required_features;
467
468 /* msgr */
469 if (ceph_test_opt(client, MYIP))
470 myaddr = &client->options->my_addr;
471 client->msgr = ceph_messenger_create(myaddr,
472 client->supported_features,
473 client->required_features);
474 if (IS_ERR(client->msgr)) {
475 err = PTR_ERR(client->msgr);
476 goto fail;
477 }
478 client->msgr->nocrc = ceph_test_opt(client, NOCRC);
479
480 /* subsystems */
481 err = ceph_monc_init(&client->monc, client);
482 if (err < 0)
483 goto fail_msgr;
484 err = ceph_osdc_init(&client->osdc, client);
485 if (err < 0)
486 goto fail_monc;
487
488 return client;
489
490fail_monc:
491 ceph_monc_stop(&client->monc);
492fail_msgr:
493 ceph_messenger_destroy(client->msgr);
494fail:
495 kfree(client);
496 return ERR_PTR(err);
497}
498EXPORT_SYMBOL(ceph_create_client);
499
500void ceph_destroy_client(struct ceph_client *client)
501{
502 dout("destroy_client %p\n", client);
503
504 /* unmount */
505 ceph_osdc_stop(&client->osdc);
506
507 ceph_monc_stop(&client->monc);
508
509 ceph_debugfs_client_cleanup(client);
510
511 ceph_messenger_destroy(client->msgr);
512
513 ceph_destroy_options(client->options);
514
515 kfree(client);
516 dout("destroy_client %p done\n", client);
517}
518EXPORT_SYMBOL(ceph_destroy_client);
519
520/*
521 * true if we have the mon map (and have thus joined the cluster)
522 */
523static int have_mon_and_osd_map(struct ceph_client *client)
524{
525 return client->monc.monmap && client->monc.monmap->epoch &&
526 client->osdc.osdmap && client->osdc.osdmap->epoch;
527}
528
529/*
530 * mount: join the ceph cluster, and open root directory.
531 */
532int __ceph_open_session(struct ceph_client *client, unsigned long started)
533{
534 int err;
535 unsigned long timeout = client->options->mount_timeout * HZ;
536
537 /* open session, and wait for mon and osd maps */
538 err = ceph_monc_open_session(&client->monc);
539 if (err < 0)
540 return err;
541
542 while (!have_mon_and_osd_map(client)) {
543 err = -EIO;
544 if (timeout && time_after_eq(jiffies, started + timeout))
545 return err;
546
547 /* wait */
548 dout("mount waiting for mon_map\n");
549 err = wait_event_interruptible_timeout(client->auth_wq,
550 have_mon_and_osd_map(client) || (client->auth_err < 0),
551 timeout);
552 if (err == -EINTR || err == -ERESTARTSYS)
553 return err;
554 if (client->auth_err < 0)
555 return client->auth_err;
556 }
557
558 return 0;
559}
560EXPORT_SYMBOL(__ceph_open_session);
561
562
563int ceph_open_session(struct ceph_client *client)
564{
565 int ret;
566 unsigned long started = jiffies; /* note the start time */
567
568 dout("open_session start\n");
569 mutex_lock(&client->mount_mutex);
570
571 ret = __ceph_open_session(client, started);
572
573 mutex_unlock(&client->mount_mutex);
574 return ret;
575}
576EXPORT_SYMBOL(ceph_open_session);
577
578
579static int __init init_ceph_lib(void)
580{
581 int ret = 0;
582
583 ret = ceph_debugfs_init();
584 if (ret < 0)
585 goto out;
586
587 ret = ceph_crypto_init();
588 if (ret < 0)
589 goto out_debugfs;
590
591 ret = ceph_msgr_init();
592 if (ret < 0)
593 goto out_crypto;
594
595 pr_info("loaded (mon/osd proto %d/%d, osdmap %d/%d %d/%d)\n",
596 CEPH_MONC_PROTOCOL, CEPH_OSDC_PROTOCOL,
597 CEPH_OSDMAP_VERSION, CEPH_OSDMAP_VERSION_EXT,
598 CEPH_OSDMAP_INC_VERSION, CEPH_OSDMAP_INC_VERSION_EXT);
599
600 return 0;
601
602out_crypto:
603 ceph_crypto_shutdown();
604out_debugfs:
605 ceph_debugfs_cleanup();
606out:
607 return ret;
608}
609
610static void __exit exit_ceph_lib(void)
611{
612 dout("exit_ceph_lib\n");
613 ceph_msgr_exit();
614 ceph_crypto_shutdown();
615 ceph_debugfs_cleanup();
616}
617
618module_init(init_ceph_lib);
619module_exit(exit_ceph_lib);
620
621MODULE_AUTHOR("Sage Weil <sage@newdream.net>");
622MODULE_AUTHOR("Yehuda Sadeh <yehuda@hq.newdream.net>");
623MODULE_AUTHOR("Patience Warnick <patience@newdream.net>");
624MODULE_DESCRIPTION("Ceph filesystem for Linux");
625MODULE_LICENSE("GPL");
1// SPDX-License-Identifier: GPL-2.0-only
2
3#include <linux/ceph/ceph_debug.h>
4#include <linux/backing-dev.h>
5#include <linux/ctype.h>
6#include <linux/fs.h>
7#include <linux/inet.h>
8#include <linux/in6.h>
9#include <linux/key.h>
10#include <keys/ceph-type.h>
11#include <linux/module.h>
12#include <linux/mount.h>
13#include <linux/nsproxy.h>
14#include <linux/parser.h>
15#include <linux/sched.h>
16#include <linux/sched/mm.h>
17#include <linux/seq_file.h>
18#include <linux/slab.h>
19#include <linux/statfs.h>
20#include <linux/string.h>
21#include <linux/vmalloc.h>
22
23
24#include <linux/ceph/ceph_features.h>
25#include <linux/ceph/libceph.h>
26#include <linux/ceph/debugfs.h>
27#include <linux/ceph/decode.h>
28#include <linux/ceph/mon_client.h>
29#include <linux/ceph/auth.h>
30#include "crypto.h"
31
32
33/*
34 * Module compatibility interface. For now it doesn't do anything,
35 * but its existence signals a certain level of functionality.
36 *
37 * The data buffer is used to pass information both to and from
38 * libceph. The return value indicates whether libceph determines
39 * it is compatible with the caller (from another kernel module),
40 * given the provided data.
41 *
42 * The data pointer can be null.
43 */
44bool libceph_compatible(void *data)
45{
46 return true;
47}
48EXPORT_SYMBOL(libceph_compatible);
49
50static int param_get_supported_features(char *buffer,
51 const struct kernel_param *kp)
52{
53 return sprintf(buffer, "0x%llx", CEPH_FEATURES_SUPPORTED_DEFAULT);
54}
55static const struct kernel_param_ops param_ops_supported_features = {
56 .get = param_get_supported_features,
57};
58module_param_cb(supported_features, ¶m_ops_supported_features, NULL,
59 0444);
60
61const char *ceph_msg_type_name(int type)
62{
63 switch (type) {
64 case CEPH_MSG_SHUTDOWN: return "shutdown";
65 case CEPH_MSG_PING: return "ping";
66 case CEPH_MSG_AUTH: return "auth";
67 case CEPH_MSG_AUTH_REPLY: return "auth_reply";
68 case CEPH_MSG_MON_MAP: return "mon_map";
69 case CEPH_MSG_MON_GET_MAP: return "mon_get_map";
70 case CEPH_MSG_MON_SUBSCRIBE: return "mon_subscribe";
71 case CEPH_MSG_MON_SUBSCRIBE_ACK: return "mon_subscribe_ack";
72 case CEPH_MSG_STATFS: return "statfs";
73 case CEPH_MSG_STATFS_REPLY: return "statfs_reply";
74 case CEPH_MSG_MON_GET_VERSION: return "mon_get_version";
75 case CEPH_MSG_MON_GET_VERSION_REPLY: return "mon_get_version_reply";
76 case CEPH_MSG_MDS_MAP: return "mds_map";
77 case CEPH_MSG_FS_MAP_USER: return "fs_map_user";
78 case CEPH_MSG_CLIENT_SESSION: return "client_session";
79 case CEPH_MSG_CLIENT_RECONNECT: return "client_reconnect";
80 case CEPH_MSG_CLIENT_REQUEST: return "client_request";
81 case CEPH_MSG_CLIENT_REQUEST_FORWARD: return "client_request_forward";
82 case CEPH_MSG_CLIENT_REPLY: return "client_reply";
83 case CEPH_MSG_CLIENT_CAPS: return "client_caps";
84 case CEPH_MSG_CLIENT_CAPRELEASE: return "client_cap_release";
85 case CEPH_MSG_CLIENT_QUOTA: return "client_quota";
86 case CEPH_MSG_CLIENT_SNAP: return "client_snap";
87 case CEPH_MSG_CLIENT_LEASE: return "client_lease";
88 case CEPH_MSG_POOLOP_REPLY: return "poolop_reply";
89 case CEPH_MSG_POOLOP: return "poolop";
90 case CEPH_MSG_MON_COMMAND: return "mon_command";
91 case CEPH_MSG_MON_COMMAND_ACK: return "mon_command_ack";
92 case CEPH_MSG_OSD_MAP: return "osd_map";
93 case CEPH_MSG_OSD_OP: return "osd_op";
94 case CEPH_MSG_OSD_OPREPLY: return "osd_opreply";
95 case CEPH_MSG_WATCH_NOTIFY: return "watch_notify";
96 case CEPH_MSG_OSD_BACKOFF: return "osd_backoff";
97 default: return "unknown";
98 }
99}
100EXPORT_SYMBOL(ceph_msg_type_name);
101
102/*
103 * Initially learn our fsid, or verify an fsid matches.
104 */
105int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid)
106{
107 if (client->have_fsid) {
108 if (ceph_fsid_compare(&client->fsid, fsid)) {
109 pr_err("bad fsid, had %pU got %pU",
110 &client->fsid, fsid);
111 return -1;
112 }
113 } else {
114 memcpy(&client->fsid, fsid, sizeof(*fsid));
115 }
116 return 0;
117}
118EXPORT_SYMBOL(ceph_check_fsid);
119
120static int strcmp_null(const char *s1, const char *s2)
121{
122 if (!s1 && !s2)
123 return 0;
124 if (s1 && !s2)
125 return -1;
126 if (!s1 && s2)
127 return 1;
128 return strcmp(s1, s2);
129}
130
131int ceph_compare_options(struct ceph_options *new_opt,
132 struct ceph_client *client)
133{
134 struct ceph_options *opt1 = new_opt;
135 struct ceph_options *opt2 = client->options;
136 int ofs = offsetof(struct ceph_options, mon_addr);
137 int i;
138 int ret;
139
140 /*
141 * Don't bother comparing options if network namespaces don't
142 * match.
143 */
144 if (!net_eq(current->nsproxy->net_ns, read_pnet(&client->msgr.net)))
145 return -1;
146
147 ret = memcmp(opt1, opt2, ofs);
148 if (ret)
149 return ret;
150
151 ret = strcmp_null(opt1->name, opt2->name);
152 if (ret)
153 return ret;
154
155 if (opt1->key && !opt2->key)
156 return -1;
157 if (!opt1->key && opt2->key)
158 return 1;
159 if (opt1->key && opt2->key) {
160 if (opt1->key->type != opt2->key->type)
161 return -1;
162 if (opt1->key->created.tv_sec != opt2->key->created.tv_sec)
163 return -1;
164 if (opt1->key->created.tv_nsec != opt2->key->created.tv_nsec)
165 return -1;
166 if (opt1->key->len != opt2->key->len)
167 return -1;
168 if (opt1->key->key && !opt2->key->key)
169 return -1;
170 if (!opt1->key->key && opt2->key->key)
171 return 1;
172 if (opt1->key->key && opt2->key->key) {
173 ret = memcmp(opt1->key->key, opt2->key->key, opt1->key->len);
174 if (ret)
175 return ret;
176 }
177 }
178
179 /* any matching mon ip implies a match */
180 for (i = 0; i < opt1->num_mon; i++) {
181 if (ceph_monmap_contains(client->monc.monmap,
182 &opt1->mon_addr[i]))
183 return 0;
184 }
185 return -1;
186}
187EXPORT_SYMBOL(ceph_compare_options);
188
189/*
190 * kvmalloc() doesn't fall back to the vmalloc allocator unless flags are
191 * compatible with (a superset of) GFP_KERNEL. This is because while the
192 * actual pages are allocated with the specified flags, the page table pages
193 * are always allocated with GFP_KERNEL. map_vm_area() doesn't even take
194 * flags because GFP_KERNEL is hard-coded in {p4d,pud,pmd,pte}_alloc().
195 *
196 * ceph_kvmalloc() may be called with GFP_KERNEL, GFP_NOFS or GFP_NOIO.
197 */
198void *ceph_kvmalloc(size_t size, gfp_t flags)
199{
200 void *p;
201
202 if ((flags & (__GFP_IO | __GFP_FS)) == (__GFP_IO | __GFP_FS)) {
203 p = kvmalloc(size, flags);
204 } else if ((flags & (__GFP_IO | __GFP_FS)) == __GFP_IO) {
205 unsigned int nofs_flag = memalloc_nofs_save();
206 p = kvmalloc(size, GFP_KERNEL);
207 memalloc_nofs_restore(nofs_flag);
208 } else {
209 unsigned int noio_flag = memalloc_noio_save();
210 p = kvmalloc(size, GFP_KERNEL);
211 memalloc_noio_restore(noio_flag);
212 }
213
214 return p;
215}
216
217static int parse_fsid(const char *str, struct ceph_fsid *fsid)
218{
219 int i = 0;
220 char tmp[3];
221 int err = -EINVAL;
222 int d;
223
224 dout("parse_fsid '%s'\n", str);
225 tmp[2] = 0;
226 while (*str && i < 16) {
227 if (ispunct(*str)) {
228 str++;
229 continue;
230 }
231 if (!isxdigit(str[0]) || !isxdigit(str[1]))
232 break;
233 tmp[0] = str[0];
234 tmp[1] = str[1];
235 if (sscanf(tmp, "%x", &d) < 1)
236 break;
237 fsid->fsid[i] = d & 0xff;
238 i++;
239 str += 2;
240 }
241
242 if (i == 16)
243 err = 0;
244 dout("parse_fsid ret %d got fsid %pU\n", err, fsid);
245 return err;
246}
247
248/*
249 * ceph options
250 */
251enum {
252 Opt_osdtimeout,
253 Opt_osdkeepalivetimeout,
254 Opt_mount_timeout,
255 Opt_osd_idle_ttl,
256 Opt_osd_request_timeout,
257 Opt_last_int,
258 /* int args above */
259 Opt_fsid,
260 Opt_name,
261 Opt_secret,
262 Opt_key,
263 Opt_ip,
264 Opt_last_string,
265 /* string args above */
266 Opt_share,
267 Opt_noshare,
268 Opt_crc,
269 Opt_nocrc,
270 Opt_cephx_require_signatures,
271 Opt_nocephx_require_signatures,
272 Opt_cephx_sign_messages,
273 Opt_nocephx_sign_messages,
274 Opt_tcp_nodelay,
275 Opt_notcp_nodelay,
276 Opt_abort_on_full,
277};
278
279static match_table_t opt_tokens = {
280 {Opt_osdtimeout, "osdtimeout=%d"},
281 {Opt_osdkeepalivetimeout, "osdkeepalive=%d"},
282 {Opt_mount_timeout, "mount_timeout=%d"},
283 {Opt_osd_idle_ttl, "osd_idle_ttl=%d"},
284 {Opt_osd_request_timeout, "osd_request_timeout=%d"},
285 /* int args above */
286 {Opt_fsid, "fsid=%s"},
287 {Opt_name, "name=%s"},
288 {Opt_secret, "secret=%s"},
289 {Opt_key, "key=%s"},
290 {Opt_ip, "ip=%s"},
291 /* string args above */
292 {Opt_share, "share"},
293 {Opt_noshare, "noshare"},
294 {Opt_crc, "crc"},
295 {Opt_nocrc, "nocrc"},
296 {Opt_cephx_require_signatures, "cephx_require_signatures"},
297 {Opt_nocephx_require_signatures, "nocephx_require_signatures"},
298 {Opt_cephx_sign_messages, "cephx_sign_messages"},
299 {Opt_nocephx_sign_messages, "nocephx_sign_messages"},
300 {Opt_tcp_nodelay, "tcp_nodelay"},
301 {Opt_notcp_nodelay, "notcp_nodelay"},
302 {Opt_abort_on_full, "abort_on_full"},
303 {-1, NULL}
304};
305
306void ceph_destroy_options(struct ceph_options *opt)
307{
308 dout("destroy_options %p\n", opt);
309 kfree(opt->name);
310 if (opt->key) {
311 ceph_crypto_key_destroy(opt->key);
312 kfree(opt->key);
313 }
314 kfree(opt->mon_addr);
315 kfree(opt);
316}
317EXPORT_SYMBOL(ceph_destroy_options);
318
319/* get secret from key store */
320static int get_secret(struct ceph_crypto_key *dst, const char *name) {
321 struct key *ukey;
322 int key_err;
323 int err = 0;
324 struct ceph_crypto_key *ckey;
325
326 ukey = request_key(&key_type_ceph, name, NULL);
327 if (IS_ERR(ukey)) {
328 /* request_key errors don't map nicely to mount(2)
329 errors; don't even try, but still printk */
330 key_err = PTR_ERR(ukey);
331 switch (key_err) {
332 case -ENOKEY:
333 pr_warn("ceph: Mount failed due to key not found: %s\n",
334 name);
335 break;
336 case -EKEYEXPIRED:
337 pr_warn("ceph: Mount failed due to expired key: %s\n",
338 name);
339 break;
340 case -EKEYREVOKED:
341 pr_warn("ceph: Mount failed due to revoked key: %s\n",
342 name);
343 break;
344 default:
345 pr_warn("ceph: Mount failed due to unknown key error %d: %s\n",
346 key_err, name);
347 }
348 err = -EPERM;
349 goto out;
350 }
351
352 ckey = ukey->payload.data[0];
353 err = ceph_crypto_key_clone(dst, ckey);
354 if (err)
355 goto out_key;
356 /* pass through, err is 0 */
357
358out_key:
359 key_put(ukey);
360out:
361 return err;
362}
363
364struct ceph_options *
365ceph_parse_options(char *options, const char *dev_name,
366 const char *dev_name_end,
367 int (*parse_extra_token)(char *c, void *private),
368 void *private)
369{
370 struct ceph_options *opt;
371 const char *c;
372 int err = -ENOMEM;
373 substring_t argstr[MAX_OPT_ARGS];
374
375 opt = kzalloc(sizeof(*opt), GFP_KERNEL);
376 if (!opt)
377 return ERR_PTR(-ENOMEM);
378 opt->mon_addr = kcalloc(CEPH_MAX_MON, sizeof(*opt->mon_addr),
379 GFP_KERNEL);
380 if (!opt->mon_addr)
381 goto out;
382
383 dout("parse_options %p options '%s' dev_name '%s'\n", opt, options,
384 dev_name);
385
386 /* start with defaults */
387 opt->flags = CEPH_OPT_DEFAULT;
388 opt->osd_keepalive_timeout = CEPH_OSD_KEEPALIVE_DEFAULT;
389 opt->mount_timeout = CEPH_MOUNT_TIMEOUT_DEFAULT;
390 opt->osd_idle_ttl = CEPH_OSD_IDLE_TTL_DEFAULT;
391 opt->osd_request_timeout = CEPH_OSD_REQUEST_TIMEOUT_DEFAULT;
392
393 /* get mon ip(s) */
394 /* ip1[:port1][,ip2[:port2]...] */
395 err = ceph_parse_ips(dev_name, dev_name_end, opt->mon_addr,
396 CEPH_MAX_MON, &opt->num_mon);
397 if (err < 0)
398 goto out;
399
400 /* parse mount options */
401 while ((c = strsep(&options, ",")) != NULL) {
402 int token, intval;
403 if (!*c)
404 continue;
405 err = -EINVAL;
406 token = match_token((char *)c, opt_tokens, argstr);
407 if (token < 0 && parse_extra_token) {
408 /* extra? */
409 err = parse_extra_token((char *)c, private);
410 if (err < 0) {
411 pr_err("bad option at '%s'\n", c);
412 goto out;
413 }
414 continue;
415 }
416 if (token < Opt_last_int) {
417 err = match_int(&argstr[0], &intval);
418 if (err < 0) {
419 pr_err("bad option arg (not int) at '%s'\n", c);
420 goto out;
421 }
422 dout("got int token %d val %d\n", token, intval);
423 } else if (token > Opt_last_int && token < Opt_last_string) {
424 dout("got string token %d val %s\n", token,
425 argstr[0].from);
426 } else {
427 dout("got token %d\n", token);
428 }
429 switch (token) {
430 case Opt_ip:
431 err = ceph_parse_ips(argstr[0].from,
432 argstr[0].to,
433 &opt->my_addr,
434 1, NULL);
435 if (err < 0)
436 goto out;
437 opt->flags |= CEPH_OPT_MYIP;
438 break;
439
440 case Opt_fsid:
441 err = parse_fsid(argstr[0].from, &opt->fsid);
442 if (err == 0)
443 opt->flags |= CEPH_OPT_FSID;
444 break;
445 case Opt_name:
446 kfree(opt->name);
447 opt->name = kstrndup(argstr[0].from,
448 argstr[0].to-argstr[0].from,
449 GFP_KERNEL);
450 if (!opt->name) {
451 err = -ENOMEM;
452 goto out;
453 }
454 break;
455 case Opt_secret:
456 ceph_crypto_key_destroy(opt->key);
457 kfree(opt->key);
458
459 opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL);
460 if (!opt->key) {
461 err = -ENOMEM;
462 goto out;
463 }
464 err = ceph_crypto_key_unarmor(opt->key, argstr[0].from);
465 if (err < 0)
466 goto out;
467 break;
468 case Opt_key:
469 ceph_crypto_key_destroy(opt->key);
470 kfree(opt->key);
471
472 opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL);
473 if (!opt->key) {
474 err = -ENOMEM;
475 goto out;
476 }
477 err = get_secret(opt->key, argstr[0].from);
478 if (err < 0)
479 goto out;
480 break;
481
482 /* misc */
483 case Opt_osdtimeout:
484 pr_warn("ignoring deprecated osdtimeout option\n");
485 break;
486 case Opt_osdkeepalivetimeout:
487 /* 0 isn't well defined right now, reject it */
488 if (intval < 1 || intval > INT_MAX / 1000) {
489 pr_err("osdkeepalive out of range\n");
490 err = -EINVAL;
491 goto out;
492 }
493 opt->osd_keepalive_timeout =
494 msecs_to_jiffies(intval * 1000);
495 break;
496 case Opt_osd_idle_ttl:
497 /* 0 isn't well defined right now, reject it */
498 if (intval < 1 || intval > INT_MAX / 1000) {
499 pr_err("osd_idle_ttl out of range\n");
500 err = -EINVAL;
501 goto out;
502 }
503 opt->osd_idle_ttl = msecs_to_jiffies(intval * 1000);
504 break;
505 case Opt_mount_timeout:
506 /* 0 is "wait forever" (i.e. infinite timeout) */
507 if (intval < 0 || intval > INT_MAX / 1000) {
508 pr_err("mount_timeout out of range\n");
509 err = -EINVAL;
510 goto out;
511 }
512 opt->mount_timeout = msecs_to_jiffies(intval * 1000);
513 break;
514 case Opt_osd_request_timeout:
515 /* 0 is "wait forever" (i.e. infinite timeout) */
516 if (intval < 0 || intval > INT_MAX / 1000) {
517 pr_err("osd_request_timeout out of range\n");
518 err = -EINVAL;
519 goto out;
520 }
521 opt->osd_request_timeout = msecs_to_jiffies(intval * 1000);
522 break;
523
524 case Opt_share:
525 opt->flags &= ~CEPH_OPT_NOSHARE;
526 break;
527 case Opt_noshare:
528 opt->flags |= CEPH_OPT_NOSHARE;
529 break;
530
531 case Opt_crc:
532 opt->flags &= ~CEPH_OPT_NOCRC;
533 break;
534 case Opt_nocrc:
535 opt->flags |= CEPH_OPT_NOCRC;
536 break;
537
538 case Opt_cephx_require_signatures:
539 opt->flags &= ~CEPH_OPT_NOMSGAUTH;
540 break;
541 case Opt_nocephx_require_signatures:
542 opt->flags |= CEPH_OPT_NOMSGAUTH;
543 break;
544 case Opt_cephx_sign_messages:
545 opt->flags &= ~CEPH_OPT_NOMSGSIGN;
546 break;
547 case Opt_nocephx_sign_messages:
548 opt->flags |= CEPH_OPT_NOMSGSIGN;
549 break;
550
551 case Opt_tcp_nodelay:
552 opt->flags |= CEPH_OPT_TCP_NODELAY;
553 break;
554 case Opt_notcp_nodelay:
555 opt->flags &= ~CEPH_OPT_TCP_NODELAY;
556 break;
557
558 case Opt_abort_on_full:
559 opt->flags |= CEPH_OPT_ABORT_ON_FULL;
560 break;
561
562 default:
563 BUG_ON(token);
564 }
565 }
566
567 /* success */
568 return opt;
569
570out:
571 ceph_destroy_options(opt);
572 return ERR_PTR(err);
573}
574EXPORT_SYMBOL(ceph_parse_options);
575
576int ceph_print_client_options(struct seq_file *m, struct ceph_client *client,
577 bool show_all)
578{
579 struct ceph_options *opt = client->options;
580 size_t pos = m->count;
581
582 if (opt->name) {
583 seq_puts(m, "name=");
584 seq_escape(m, opt->name, ", \t\n\\");
585 seq_putc(m, ',');
586 }
587 if (opt->key)
588 seq_puts(m, "secret=<hidden>,");
589
590 if (opt->flags & CEPH_OPT_FSID)
591 seq_printf(m, "fsid=%pU,", &opt->fsid);
592 if (opt->flags & CEPH_OPT_NOSHARE)
593 seq_puts(m, "noshare,");
594 if (opt->flags & CEPH_OPT_NOCRC)
595 seq_puts(m, "nocrc,");
596 if (opt->flags & CEPH_OPT_NOMSGAUTH)
597 seq_puts(m, "nocephx_require_signatures,");
598 if (opt->flags & CEPH_OPT_NOMSGSIGN)
599 seq_puts(m, "nocephx_sign_messages,");
600 if ((opt->flags & CEPH_OPT_TCP_NODELAY) == 0)
601 seq_puts(m, "notcp_nodelay,");
602 if (show_all && (opt->flags & CEPH_OPT_ABORT_ON_FULL))
603 seq_puts(m, "abort_on_full,");
604
605 if (opt->mount_timeout != CEPH_MOUNT_TIMEOUT_DEFAULT)
606 seq_printf(m, "mount_timeout=%d,",
607 jiffies_to_msecs(opt->mount_timeout) / 1000);
608 if (opt->osd_idle_ttl != CEPH_OSD_IDLE_TTL_DEFAULT)
609 seq_printf(m, "osd_idle_ttl=%d,",
610 jiffies_to_msecs(opt->osd_idle_ttl) / 1000);
611 if (opt->osd_keepalive_timeout != CEPH_OSD_KEEPALIVE_DEFAULT)
612 seq_printf(m, "osdkeepalivetimeout=%d,",
613 jiffies_to_msecs(opt->osd_keepalive_timeout) / 1000);
614 if (opt->osd_request_timeout != CEPH_OSD_REQUEST_TIMEOUT_DEFAULT)
615 seq_printf(m, "osd_request_timeout=%d,",
616 jiffies_to_msecs(opt->osd_request_timeout) / 1000);
617
618 /* drop redundant comma */
619 if (m->count != pos)
620 m->count--;
621
622 return 0;
623}
624EXPORT_SYMBOL(ceph_print_client_options);
625
626struct ceph_entity_addr *ceph_client_addr(struct ceph_client *client)
627{
628 return &client->msgr.inst.addr;
629}
630EXPORT_SYMBOL(ceph_client_addr);
631
632u64 ceph_client_gid(struct ceph_client *client)
633{
634 return client->monc.auth->global_id;
635}
636EXPORT_SYMBOL(ceph_client_gid);
637
638/*
639 * create a fresh client instance
640 */
641struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private)
642{
643 struct ceph_client *client;
644 struct ceph_entity_addr *myaddr = NULL;
645 int err;
646
647 err = wait_for_random_bytes();
648 if (err < 0)
649 return ERR_PTR(err);
650
651 client = kzalloc(sizeof(*client), GFP_KERNEL);
652 if (client == NULL)
653 return ERR_PTR(-ENOMEM);
654
655 client->private = private;
656 client->options = opt;
657
658 mutex_init(&client->mount_mutex);
659 init_waitqueue_head(&client->auth_wq);
660 client->auth_err = 0;
661
662 client->extra_mon_dispatch = NULL;
663 client->supported_features = CEPH_FEATURES_SUPPORTED_DEFAULT;
664 client->required_features = CEPH_FEATURES_REQUIRED_DEFAULT;
665
666 if (!ceph_test_opt(client, NOMSGAUTH))
667 client->required_features |= CEPH_FEATURE_MSG_AUTH;
668
669 /* msgr */
670 if (ceph_test_opt(client, MYIP))
671 myaddr = &client->options->my_addr;
672
673 ceph_messenger_init(&client->msgr, myaddr);
674
675 /* subsystems */
676 err = ceph_monc_init(&client->monc, client);
677 if (err < 0)
678 goto fail;
679 err = ceph_osdc_init(&client->osdc, client);
680 if (err < 0)
681 goto fail_monc;
682
683 return client;
684
685fail_monc:
686 ceph_monc_stop(&client->monc);
687fail:
688 ceph_messenger_fini(&client->msgr);
689 kfree(client);
690 return ERR_PTR(err);
691}
692EXPORT_SYMBOL(ceph_create_client);
693
694void ceph_destroy_client(struct ceph_client *client)
695{
696 dout("destroy_client %p\n", client);
697
698 atomic_set(&client->msgr.stopping, 1);
699
700 /* unmount */
701 ceph_osdc_stop(&client->osdc);
702 ceph_monc_stop(&client->monc);
703 ceph_messenger_fini(&client->msgr);
704
705 ceph_debugfs_client_cleanup(client);
706
707 ceph_destroy_options(client->options);
708
709 kfree(client);
710 dout("destroy_client %p done\n", client);
711}
712EXPORT_SYMBOL(ceph_destroy_client);
713
714void ceph_reset_client_addr(struct ceph_client *client)
715{
716 ceph_messenger_reset_nonce(&client->msgr);
717 ceph_monc_reopen_session(&client->monc);
718 ceph_osdc_reopen_osds(&client->osdc);
719}
720EXPORT_SYMBOL(ceph_reset_client_addr);
721
722/*
723 * true if we have the mon map (and have thus joined the cluster)
724 */
725static bool have_mon_and_osd_map(struct ceph_client *client)
726{
727 return client->monc.monmap && client->monc.monmap->epoch &&
728 client->osdc.osdmap && client->osdc.osdmap->epoch;
729}
730
731/*
732 * mount: join the ceph cluster, and open root directory.
733 */
734int __ceph_open_session(struct ceph_client *client, unsigned long started)
735{
736 unsigned long timeout = client->options->mount_timeout;
737 long err;
738
739 /* open session, and wait for mon and osd maps */
740 err = ceph_monc_open_session(&client->monc);
741 if (err < 0)
742 return err;
743
744 while (!have_mon_and_osd_map(client)) {
745 if (timeout && time_after_eq(jiffies, started + timeout))
746 return -ETIMEDOUT;
747
748 /* wait */
749 dout("mount waiting for mon_map\n");
750 err = wait_event_interruptible_timeout(client->auth_wq,
751 have_mon_and_osd_map(client) || (client->auth_err < 0),
752 ceph_timeout_jiffies(timeout));
753 if (err < 0)
754 return err;
755 if (client->auth_err < 0)
756 return client->auth_err;
757 }
758
759 pr_info("client%llu fsid %pU\n", ceph_client_gid(client),
760 &client->fsid);
761 ceph_debugfs_client_init(client);
762
763 return 0;
764}
765EXPORT_SYMBOL(__ceph_open_session);
766
767int ceph_open_session(struct ceph_client *client)
768{
769 int ret;
770 unsigned long started = jiffies; /* note the start time */
771
772 dout("open_session start\n");
773 mutex_lock(&client->mount_mutex);
774
775 ret = __ceph_open_session(client, started);
776
777 mutex_unlock(&client->mount_mutex);
778 return ret;
779}
780EXPORT_SYMBOL(ceph_open_session);
781
782int ceph_wait_for_latest_osdmap(struct ceph_client *client,
783 unsigned long timeout)
784{
785 u64 newest_epoch;
786 int ret;
787
788 ret = ceph_monc_get_version(&client->monc, "osdmap", &newest_epoch);
789 if (ret)
790 return ret;
791
792 if (client->osdc.osdmap->epoch >= newest_epoch)
793 return 0;
794
795 ceph_osdc_maybe_request_map(&client->osdc);
796 return ceph_monc_wait_osdmap(&client->monc, newest_epoch, timeout);
797}
798EXPORT_SYMBOL(ceph_wait_for_latest_osdmap);
799
800static int __init init_ceph_lib(void)
801{
802 int ret = 0;
803
804 ceph_debugfs_init();
805
806 ret = ceph_crypto_init();
807 if (ret < 0)
808 goto out_debugfs;
809
810 ret = ceph_msgr_init();
811 if (ret < 0)
812 goto out_crypto;
813
814 ret = ceph_osdc_setup();
815 if (ret < 0)
816 goto out_msgr;
817
818 pr_info("loaded (mon/osd proto %d/%d)\n",
819 CEPH_MONC_PROTOCOL, CEPH_OSDC_PROTOCOL);
820
821 return 0;
822
823out_msgr:
824 ceph_msgr_exit();
825out_crypto:
826 ceph_crypto_shutdown();
827out_debugfs:
828 ceph_debugfs_cleanup();
829 return ret;
830}
831
832static void __exit exit_ceph_lib(void)
833{
834 dout("exit_ceph_lib\n");
835 WARN_ON(!ceph_strings_empty());
836
837 ceph_osdc_cleanup();
838 ceph_msgr_exit();
839 ceph_crypto_shutdown();
840 ceph_debugfs_cleanup();
841}
842
843module_init(init_ceph_lib);
844module_exit(exit_ceph_lib);
845
846MODULE_AUTHOR("Sage Weil <sage@newdream.net>");
847MODULE_AUTHOR("Yehuda Sadeh <yehuda@hq.newdream.net>");
848MODULE_AUTHOR("Patience Warnick <patience@newdream.net>");
849MODULE_DESCRIPTION("Ceph core library");
850MODULE_LICENSE("GPL");