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Commit | Line | Data |
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3d14c5d2 YS |
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> | |
e2c3d29b | 8 | #include <linux/key.h> |
4b2a58ab | 9 | #include <keys/ceph-type.h> |
3d14c5d2 YS |
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> | |
eea553c2 EB |
18 | #include <linux/nsproxy.h> |
19 | #include <net/net_namespace.h> | |
3d14c5d2 YS |
20 | |
21 | ||
1fe60e51 | 22 | #include <linux/ceph/ceph_features.h> |
3d14c5d2 YS |
23 | #include <linux/ceph/libceph.h> |
24 | #include <linux/ceph/debugfs.h> | |
25 | #include <linux/ceph/decode.h> | |
26 | #include <linux/ceph/mon_client.h> | |
27 | #include <linux/ceph/auth.h> | |
8323c3aa | 28 | #include "crypto.h" |
3d14c5d2 YS |
29 | |
30 | ||
72fe25e3 AE |
31 | /* |
32 | * Module compatibility interface. For now it doesn't do anything, | |
33 | * but its existence signals a certain level of functionality. | |
34 | * | |
35 | * The data buffer is used to pass information both to and from | |
36 | * libceph. The return value indicates whether libceph determines | |
37 | * it is compatible with the caller (from another kernel module), | |
38 | * given the provided data. | |
39 | * | |
40 | * The data pointer can be null. | |
41 | */ | |
42 | bool libceph_compatible(void *data) | |
43 | { | |
1e32d34c | 44 | return true; |
72fe25e3 AE |
45 | } |
46 | EXPORT_SYMBOL(libceph_compatible); | |
3d14c5d2 YS |
47 | |
48 | /* | |
49 | * find filename portion of a path (/foo/bar/baz -> baz) | |
50 | */ | |
51 | const char *ceph_file_part(const char *s, int len) | |
52 | { | |
53 | const char *e = s + len; | |
54 | ||
55 | while (e != s && *(e-1) != '/') | |
56 | e--; | |
57 | return e; | |
58 | } | |
59 | EXPORT_SYMBOL(ceph_file_part); | |
60 | ||
61 | const 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_MDS_MAP: return "mds_map"; | |
75 | case CEPH_MSG_CLIENT_SESSION: return "client_session"; | |
76 | case CEPH_MSG_CLIENT_RECONNECT: return "client_reconnect"; | |
77 | case CEPH_MSG_CLIENT_REQUEST: return "client_request"; | |
78 | case CEPH_MSG_CLIENT_REQUEST_FORWARD: return "client_request_forward"; | |
79 | case CEPH_MSG_CLIENT_REPLY: return "client_reply"; | |
80 | case CEPH_MSG_CLIENT_CAPS: return "client_caps"; | |
81 | case CEPH_MSG_CLIENT_CAPRELEASE: return "client_cap_release"; | |
82 | case CEPH_MSG_CLIENT_SNAP: return "client_snap"; | |
83 | case CEPH_MSG_CLIENT_LEASE: return "client_lease"; | |
84 | case CEPH_MSG_OSD_MAP: return "osd_map"; | |
85 | case CEPH_MSG_OSD_OP: return "osd_op"; | |
86 | case CEPH_MSG_OSD_OPREPLY: return "osd_opreply"; | |
a40c4f10 | 87 | case CEPH_MSG_WATCH_NOTIFY: return "watch_notify"; |
3d14c5d2 YS |
88 | default: return "unknown"; |
89 | } | |
90 | } | |
91 | EXPORT_SYMBOL(ceph_msg_type_name); | |
92 | ||
93 | /* | |
94 | * Initially learn our fsid, or verify an fsid matches. | |
95 | */ | |
96 | int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid) | |
97 | { | |
98 | if (client->have_fsid) { | |
99 | if (ceph_fsid_compare(&client->fsid, fsid)) { | |
100 | pr_err("bad fsid, had %pU got %pU", | |
101 | &client->fsid, fsid); | |
102 | return -1; | |
103 | } | |
104 | } else { | |
3d14c5d2 | 105 | memcpy(&client->fsid, fsid, sizeof(*fsid)); |
3d14c5d2 YS |
106 | } |
107 | return 0; | |
108 | } | |
109 | EXPORT_SYMBOL(ceph_check_fsid); | |
110 | ||
111 | static int strcmp_null(const char *s1, const char *s2) | |
112 | { | |
113 | if (!s1 && !s2) | |
114 | return 0; | |
115 | if (s1 && !s2) | |
116 | return -1; | |
117 | if (!s1 && s2) | |
118 | return 1; | |
119 | return strcmp(s1, s2); | |
120 | } | |
121 | ||
122 | int ceph_compare_options(struct ceph_options *new_opt, | |
123 | struct ceph_client *client) | |
124 | { | |
125 | struct ceph_options *opt1 = new_opt; | |
126 | struct ceph_options *opt2 = client->options; | |
127 | int ofs = offsetof(struct ceph_options, mon_addr); | |
128 | int i; | |
129 | int ret; | |
130 | ||
131 | ret = memcmp(opt1, opt2, ofs); | |
132 | if (ret) | |
133 | return ret; | |
134 | ||
135 | ret = strcmp_null(opt1->name, opt2->name); | |
136 | if (ret) | |
137 | return ret; | |
138 | ||
8323c3aa TV |
139 | if (opt1->key && !opt2->key) |
140 | return -1; | |
141 | if (!opt1->key && opt2->key) | |
142 | return 1; | |
143 | if (opt1->key && opt2->key) { | |
144 | if (opt1->key->type != opt2->key->type) | |
145 | return -1; | |
146 | if (opt1->key->created.tv_sec != opt2->key->created.tv_sec) | |
147 | return -1; | |
148 | if (opt1->key->created.tv_nsec != opt2->key->created.tv_nsec) | |
149 | return -1; | |
150 | if (opt1->key->len != opt2->key->len) | |
151 | return -1; | |
152 | if (opt1->key->key && !opt2->key->key) | |
153 | return -1; | |
154 | if (!opt1->key->key && opt2->key->key) | |
155 | return 1; | |
156 | if (opt1->key->key && opt2->key->key) { | |
157 | ret = memcmp(opt1->key->key, opt2->key->key, opt1->key->len); | |
158 | if (ret) | |
159 | return ret; | |
160 | } | |
161 | } | |
3d14c5d2 YS |
162 | |
163 | /* any matching mon ip implies a match */ | |
164 | for (i = 0; i < opt1->num_mon; i++) { | |
165 | if (ceph_monmap_contains(client->monc.monmap, | |
166 | &opt1->mon_addr[i])) | |
167 | return 0; | |
168 | } | |
169 | return -1; | |
170 | } | |
171 | EXPORT_SYMBOL(ceph_compare_options); | |
172 | ||
173 | ||
174 | static int parse_fsid(const char *str, struct ceph_fsid *fsid) | |
175 | { | |
176 | int i = 0; | |
177 | char tmp[3]; | |
178 | int err = -EINVAL; | |
179 | int d; | |
180 | ||
181 | dout("parse_fsid '%s'\n", str); | |
182 | tmp[2] = 0; | |
183 | while (*str && i < 16) { | |
184 | if (ispunct(*str)) { | |
185 | str++; | |
186 | continue; | |
187 | } | |
188 | if (!isxdigit(str[0]) || !isxdigit(str[1])) | |
189 | break; | |
190 | tmp[0] = str[0]; | |
191 | tmp[1] = str[1]; | |
192 | if (sscanf(tmp, "%x", &d) < 1) | |
193 | break; | |
194 | fsid->fsid[i] = d & 0xff; | |
195 | i++; | |
196 | str += 2; | |
197 | } | |
198 | ||
199 | if (i == 16) | |
200 | err = 0; | |
201 | dout("parse_fsid ret %d got fsid %pU", err, fsid); | |
202 | return err; | |
203 | } | |
204 | ||
205 | /* | |
206 | * ceph options | |
207 | */ | |
208 | enum { | |
209 | Opt_osdtimeout, | |
210 | Opt_osdkeepalivetimeout, | |
211 | Opt_mount_timeout, | |
212 | Opt_osd_idle_ttl, | |
213 | Opt_last_int, | |
214 | /* int args above */ | |
215 | Opt_fsid, | |
216 | Opt_name, | |
217 | Opt_secret, | |
e2c3d29b | 218 | Opt_key, |
3d14c5d2 YS |
219 | Opt_ip, |
220 | Opt_last_string, | |
221 | /* string args above */ | |
cffaba15 | 222 | Opt_share, |
3d14c5d2 | 223 | Opt_noshare, |
cffaba15 | 224 | Opt_crc, |
3d14c5d2 YS |
225 | Opt_nocrc, |
226 | }; | |
227 | ||
228 | static match_table_t opt_tokens = { | |
229 | {Opt_osdtimeout, "osdtimeout=%d"}, | |
230 | {Opt_osdkeepalivetimeout, "osdkeepalive=%d"}, | |
231 | {Opt_mount_timeout, "mount_timeout=%d"}, | |
232 | {Opt_osd_idle_ttl, "osd_idle_ttl=%d"}, | |
233 | /* int args above */ | |
234 | {Opt_fsid, "fsid=%s"}, | |
235 | {Opt_name, "name=%s"}, | |
236 | {Opt_secret, "secret=%s"}, | |
e2c3d29b | 237 | {Opt_key, "key=%s"}, |
3d14c5d2 YS |
238 | {Opt_ip, "ip=%s"}, |
239 | /* string args above */ | |
cffaba15 | 240 | {Opt_share, "share"}, |
3d14c5d2 | 241 | {Opt_noshare, "noshare"}, |
cffaba15 | 242 | {Opt_crc, "crc"}, |
3d14c5d2 YS |
243 | {Opt_nocrc, "nocrc"}, |
244 | {-1, NULL} | |
245 | }; | |
246 | ||
247 | void ceph_destroy_options(struct ceph_options *opt) | |
248 | { | |
249 | dout("destroy_options %p\n", opt); | |
250 | kfree(opt->name); | |
8323c3aa TV |
251 | if (opt->key) { |
252 | ceph_crypto_key_destroy(opt->key); | |
253 | kfree(opt->key); | |
254 | } | |
1cad7893 | 255 | kfree(opt->mon_addr); |
3d14c5d2 YS |
256 | kfree(opt); |
257 | } | |
258 | EXPORT_SYMBOL(ceph_destroy_options); | |
259 | ||
e2c3d29b TV |
260 | /* get secret from key store */ |
261 | static int get_secret(struct ceph_crypto_key *dst, const char *name) { | |
262 | struct key *ukey; | |
263 | int key_err; | |
264 | int err = 0; | |
4b2a58ab | 265 | struct ceph_crypto_key *ckey; |
e2c3d29b | 266 | |
4b2a58ab | 267 | ukey = request_key(&key_type_ceph, name, NULL); |
e2c3d29b TV |
268 | if (!ukey || IS_ERR(ukey)) { |
269 | /* request_key errors don't map nicely to mount(2) | |
270 | errors; don't even try, but still printk */ | |
271 | key_err = PTR_ERR(ukey); | |
272 | switch (key_err) { | |
273 | case -ENOKEY: | |
274 | pr_warning("ceph: Mount failed due to key not found: %s\n", name); | |
275 | break; | |
276 | case -EKEYEXPIRED: | |
277 | pr_warning("ceph: Mount failed due to expired key: %s\n", name); | |
278 | break; | |
279 | case -EKEYREVOKED: | |
280 | pr_warning("ceph: Mount failed due to revoked key: %s\n", name); | |
281 | break; | |
282 | default: | |
283 | pr_warning("ceph: Mount failed due to unknown key error" | |
284 | " %d: %s\n", key_err, name); | |
285 | } | |
286 | err = -EPERM; | |
287 | goto out; | |
288 | } | |
289 | ||
4b2a58ab TV |
290 | ckey = ukey->payload.data; |
291 | err = ceph_crypto_key_clone(dst, ckey); | |
e2c3d29b TV |
292 | if (err) |
293 | goto out_key; | |
294 | /* pass through, err is 0 */ | |
295 | ||
296 | out_key: | |
297 | key_put(ukey); | |
298 | out: | |
299 | return err; | |
300 | } | |
301 | ||
ee57741c AE |
302 | struct ceph_options * |
303 | ceph_parse_options(char *options, const char *dev_name, | |
304 | const char *dev_name_end, | |
305 | int (*parse_extra_token)(char *c, void *private), | |
306 | void *private) | |
3d14c5d2 YS |
307 | { |
308 | struct ceph_options *opt; | |
309 | const char *c; | |
310 | int err = -ENOMEM; | |
311 | substring_t argstr[MAX_OPT_ARGS]; | |
312 | ||
eea553c2 EB |
313 | if (current->nsproxy->net_ns != &init_net) |
314 | return ERR_PTR(-EINVAL); | |
315 | ||
3d14c5d2 YS |
316 | opt = kzalloc(sizeof(*opt), GFP_KERNEL); |
317 | if (!opt) | |
ee57741c | 318 | return ERR_PTR(-ENOMEM); |
3d14c5d2 YS |
319 | opt->mon_addr = kcalloc(CEPH_MAX_MON, sizeof(*opt->mon_addr), |
320 | GFP_KERNEL); | |
321 | if (!opt->mon_addr) | |
322 | goto out; | |
323 | ||
324 | dout("parse_options %p options '%s' dev_name '%s'\n", opt, options, | |
325 | dev_name); | |
326 | ||
327 | /* start with defaults */ | |
328 | opt->flags = CEPH_OPT_DEFAULT; | |
3d14c5d2 YS |
329 | opt->osd_keepalive_timeout = CEPH_OSD_KEEPALIVE_DEFAULT; |
330 | opt->mount_timeout = CEPH_MOUNT_TIMEOUT_DEFAULT; /* seconds */ | |
331 | opt->osd_idle_ttl = CEPH_OSD_IDLE_TTL_DEFAULT; /* seconds */ | |
332 | ||
333 | /* get mon ip(s) */ | |
334 | /* ip1[:port1][,ip2[:port2]...] */ | |
335 | err = ceph_parse_ips(dev_name, dev_name_end, opt->mon_addr, | |
336 | CEPH_MAX_MON, &opt->num_mon); | |
337 | if (err < 0) | |
338 | goto out; | |
339 | ||
340 | /* parse mount options */ | |
341 | while ((c = strsep(&options, ",")) != NULL) { | |
342 | int token, intval, ret; | |
343 | if (!*c) | |
344 | continue; | |
345 | err = -EINVAL; | |
346 | token = match_token((char *)c, opt_tokens, argstr); | |
010e3b48 | 347 | if (token < 0 && parse_extra_token) { |
3d14c5d2 YS |
348 | /* extra? */ |
349 | err = parse_extra_token((char *)c, private); | |
350 | if (err < 0) { | |
351 | pr_err("bad option at '%s'\n", c); | |
352 | goto out; | |
353 | } | |
354 | continue; | |
355 | } | |
356 | if (token < Opt_last_int) { | |
357 | ret = match_int(&argstr[0], &intval); | |
358 | if (ret < 0) { | |
359 | pr_err("bad mount option arg (not int) " | |
360 | "at '%s'\n", c); | |
361 | continue; | |
362 | } | |
363 | dout("got int token %d val %d\n", token, intval); | |
364 | } else if (token > Opt_last_int && token < Opt_last_string) { | |
365 | dout("got string token %d val %s\n", token, | |
366 | argstr[0].from); | |
367 | } else { | |
368 | dout("got token %d\n", token); | |
369 | } | |
370 | switch (token) { | |
371 | case Opt_ip: | |
372 | err = ceph_parse_ips(argstr[0].from, | |
373 | argstr[0].to, | |
374 | &opt->my_addr, | |
375 | 1, NULL); | |
376 | if (err < 0) | |
377 | goto out; | |
378 | opt->flags |= CEPH_OPT_MYIP; | |
379 | break; | |
380 | ||
381 | case Opt_fsid: | |
382 | err = parse_fsid(argstr[0].from, &opt->fsid); | |
383 | if (err == 0) | |
384 | opt->flags |= CEPH_OPT_FSID; | |
385 | break; | |
386 | case Opt_name: | |
387 | opt->name = kstrndup(argstr[0].from, | |
388 | argstr[0].to-argstr[0].from, | |
389 | GFP_KERNEL); | |
390 | break; | |
391 | case Opt_secret: | |
8323c3aa TV |
392 | opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL); |
393 | if (!opt->key) { | |
394 | err = -ENOMEM; | |
395 | goto out; | |
396 | } | |
397 | err = ceph_crypto_key_unarmor(opt->key, argstr[0].from); | |
398 | if (err < 0) | |
399 | goto out; | |
3d14c5d2 | 400 | break; |
e2c3d29b TV |
401 | case Opt_key: |
402 | opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL); | |
403 | if (!opt->key) { | |
404 | err = -ENOMEM; | |
405 | goto out; | |
406 | } | |
407 | err = get_secret(opt->key, argstr[0].from); | |
408 | if (err < 0) | |
409 | goto out; | |
410 | break; | |
3d14c5d2 YS |
411 | |
412 | /* misc */ | |
413 | case Opt_osdtimeout: | |
83aff95e | 414 | pr_warning("ignoring deprecated osdtimeout option\n"); |
3d14c5d2 YS |
415 | break; |
416 | case Opt_osdkeepalivetimeout: | |
417 | opt->osd_keepalive_timeout = intval; | |
418 | break; | |
419 | case Opt_osd_idle_ttl: | |
420 | opt->osd_idle_ttl = intval; | |
421 | break; | |
422 | case Opt_mount_timeout: | |
423 | opt->mount_timeout = intval; | |
424 | break; | |
425 | ||
cffaba15 AE |
426 | case Opt_share: |
427 | opt->flags &= ~CEPH_OPT_NOSHARE; | |
428 | break; | |
3d14c5d2 YS |
429 | case Opt_noshare: |
430 | opt->flags |= CEPH_OPT_NOSHARE; | |
431 | break; | |
432 | ||
cffaba15 AE |
433 | case Opt_crc: |
434 | opt->flags &= ~CEPH_OPT_NOCRC; | |
435 | break; | |
3d14c5d2 YS |
436 | case Opt_nocrc: |
437 | opt->flags |= CEPH_OPT_NOCRC; | |
438 | break; | |
439 | ||
440 | default: | |
441 | BUG_ON(token); | |
442 | } | |
443 | } | |
444 | ||
445 | /* success */ | |
ee57741c | 446 | return opt; |
3d14c5d2 YS |
447 | |
448 | out: | |
449 | ceph_destroy_options(opt); | |
ee57741c | 450 | return ERR_PTR(err); |
3d14c5d2 YS |
451 | } |
452 | EXPORT_SYMBOL(ceph_parse_options); | |
453 | ||
454 | u64 ceph_client_id(struct ceph_client *client) | |
455 | { | |
456 | return client->monc.auth->global_id; | |
457 | } | |
458 | EXPORT_SYMBOL(ceph_client_id); | |
459 | ||
460 | /* | |
461 | * create a fresh client instance | |
462 | */ | |
6ab00d46 | 463 | struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private, |
95c96174 ED |
464 | unsigned int supported_features, |
465 | unsigned int required_features) | |
3d14c5d2 YS |
466 | { |
467 | struct ceph_client *client; | |
6ab00d46 | 468 | struct ceph_entity_addr *myaddr = NULL; |
3d14c5d2 YS |
469 | int err = -ENOMEM; |
470 | ||
471 | client = kzalloc(sizeof(*client), GFP_KERNEL); | |
472 | if (client == NULL) | |
473 | return ERR_PTR(-ENOMEM); | |
474 | ||
475 | client->private = private; | |
476 | client->options = opt; | |
477 | ||
478 | mutex_init(&client->mount_mutex); | |
479 | init_waitqueue_head(&client->auth_wq); | |
480 | client->auth_err = 0; | |
481 | ||
482 | client->extra_mon_dispatch = NULL; | |
1fe60e51 | 483 | client->supported_features = CEPH_FEATURES_SUPPORTED_DEFAULT | |
6ab00d46 | 484 | supported_features; |
1fe60e51 | 485 | client->required_features = CEPH_FEATURES_REQUIRED_DEFAULT | |
6ab00d46 SW |
486 | required_features; |
487 | ||
488 | /* msgr */ | |
489 | if (ceph_test_opt(client, MYIP)) | |
490 | myaddr = &client->options->my_addr; | |
15d9882c AE |
491 | ceph_messenger_init(&client->msgr, myaddr, |
492 | client->supported_features, | |
493 | client->required_features, | |
494 | ceph_test_opt(client, NOCRC)); | |
3d14c5d2 YS |
495 | |
496 | /* subsystems */ | |
497 | err = ceph_monc_init(&client->monc, client); | |
498 | if (err < 0) | |
15d9882c | 499 | goto fail; |
3d14c5d2 YS |
500 | err = ceph_osdc_init(&client->osdc, client); |
501 | if (err < 0) | |
502 | goto fail_monc; | |
503 | ||
504 | return client; | |
505 | ||
506 | fail_monc: | |
507 | ceph_monc_stop(&client->monc); | |
508 | fail: | |
509 | kfree(client); | |
510 | return ERR_PTR(err); | |
511 | } | |
512 | EXPORT_SYMBOL(ceph_create_client); | |
513 | ||
514 | void ceph_destroy_client(struct ceph_client *client) | |
515 | { | |
516 | dout("destroy_client %p\n", client); | |
517 | ||
a2a32584 GH |
518 | atomic_set(&client->msgr.stopping, 1); |
519 | ||
3d14c5d2 YS |
520 | /* unmount */ |
521 | ceph_osdc_stop(&client->osdc); | |
522 | ||
3d14c5d2 YS |
523 | ceph_monc_stop(&client->monc); |
524 | ||
525 | ceph_debugfs_client_cleanup(client); | |
526 | ||
3d14c5d2 YS |
527 | ceph_destroy_options(client->options); |
528 | ||
529 | kfree(client); | |
530 | dout("destroy_client %p done\n", client); | |
531 | } | |
532 | EXPORT_SYMBOL(ceph_destroy_client); | |
533 | ||
534 | /* | |
535 | * true if we have the mon map (and have thus joined the cluster) | |
536 | */ | |
537 | static int have_mon_and_osd_map(struct ceph_client *client) | |
538 | { | |
539 | return client->monc.monmap && client->monc.monmap->epoch && | |
540 | client->osdc.osdmap && client->osdc.osdmap->epoch; | |
541 | } | |
542 | ||
543 | /* | |
544 | * mount: join the ceph cluster, and open root directory. | |
545 | */ | |
546 | int __ceph_open_session(struct ceph_client *client, unsigned long started) | |
547 | { | |
3d14c5d2 YS |
548 | int err; |
549 | unsigned long timeout = client->options->mount_timeout * HZ; | |
550 | ||
3d14c5d2 YS |
551 | /* open session, and wait for mon and osd maps */ |
552 | err = ceph_monc_open_session(&client->monc); | |
553 | if (err < 0) | |
554 | return err; | |
555 | ||
556 | while (!have_mon_and_osd_map(client)) { | |
557 | err = -EIO; | |
558 | if (timeout && time_after_eq(jiffies, started + timeout)) | |
559 | return err; | |
560 | ||
561 | /* wait */ | |
562 | dout("mount waiting for mon_map\n"); | |
563 | err = wait_event_interruptible_timeout(client->auth_wq, | |
564 | have_mon_and_osd_map(client) || (client->auth_err < 0), | |
565 | timeout); | |
566 | if (err == -EINTR || err == -ERESTARTSYS) | |
567 | return err; | |
568 | if (client->auth_err < 0) | |
569 | return client->auth_err; | |
570 | } | |
571 | ||
572 | return 0; | |
573 | } | |
574 | EXPORT_SYMBOL(__ceph_open_session); | |
575 | ||
576 | ||
577 | int ceph_open_session(struct ceph_client *client) | |
578 | { | |
579 | int ret; | |
580 | unsigned long started = jiffies; /* note the start time */ | |
581 | ||
582 | dout("open_session start\n"); | |
583 | mutex_lock(&client->mount_mutex); | |
584 | ||
585 | ret = __ceph_open_session(client, started); | |
586 | ||
587 | mutex_unlock(&client->mount_mutex); | |
588 | return ret; | |
589 | } | |
590 | EXPORT_SYMBOL(ceph_open_session); | |
591 | ||
592 | ||
593 | static int __init init_ceph_lib(void) | |
594 | { | |
595 | int ret = 0; | |
596 | ||
597 | ret = ceph_debugfs_init(); | |
598 | if (ret < 0) | |
599 | goto out; | |
600 | ||
4b2a58ab | 601 | ret = ceph_crypto_init(); |
3d14c5d2 YS |
602 | if (ret < 0) |
603 | goto out_debugfs; | |
604 | ||
4b2a58ab TV |
605 | ret = ceph_msgr_init(); |
606 | if (ret < 0) | |
607 | goto out_crypto; | |
608 | ||
4f6a7e5e SW |
609 | pr_info("loaded (mon/osd proto %d/%d)\n", |
610 | CEPH_MONC_PROTOCOL, CEPH_OSDC_PROTOCOL); | |
3d14c5d2 YS |
611 | |
612 | return 0; | |
613 | ||
4b2a58ab TV |
614 | out_crypto: |
615 | ceph_crypto_shutdown(); | |
3d14c5d2 YS |
616 | out_debugfs: |
617 | ceph_debugfs_cleanup(); | |
618 | out: | |
619 | return ret; | |
620 | } | |
621 | ||
622 | static void __exit exit_ceph_lib(void) | |
623 | { | |
624 | dout("exit_ceph_lib\n"); | |
625 | ceph_msgr_exit(); | |
4b2a58ab | 626 | ceph_crypto_shutdown(); |
3d14c5d2 YS |
627 | ceph_debugfs_cleanup(); |
628 | } | |
629 | ||
630 | module_init(init_ceph_lib); | |
631 | module_exit(exit_ceph_lib); | |
632 | ||
633 | MODULE_AUTHOR("Sage Weil <sage@newdream.net>"); | |
634 | MODULE_AUTHOR("Yehuda Sadeh <yehuda@hq.newdream.net>"); | |
635 | MODULE_AUTHOR("Patience Warnick <patience@newdream.net>"); | |
636 | MODULE_DESCRIPTION("Ceph filesystem for Linux"); | |
637 | MODULE_LICENSE("GPL"); |