Commit | Line | Data |
---|---|---|
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> | |
eeb0bed5 | 18 | #include <linux/vmalloc.h> |
eea553c2 EB |
19 | #include <linux/nsproxy.h> |
20 | #include <net/net_namespace.h> | |
3d14c5d2 YS |
21 | |
22 | ||
1fe60e51 | 23 | #include <linux/ceph/ceph_features.h> |
3d14c5d2 YS |
24 | #include <linux/ceph/libceph.h> |
25 | #include <linux/ceph/debugfs.h> | |
26 | #include <linux/ceph/decode.h> | |
27 | #include <linux/ceph/mon_client.h> | |
28 | #include <linux/ceph/auth.h> | |
8323c3aa | 29 | #include "crypto.h" |
3d14c5d2 YS |
30 | |
31 | ||
72fe25e3 AE |
32 | /* |
33 | * Module compatibility interface. For now it doesn't do anything, | |
34 | * but its existence signals a certain level of functionality. | |
35 | * | |
36 | * The data buffer is used to pass information both to and from | |
37 | * libceph. The return value indicates whether libceph determines | |
38 | * it is compatible with the caller (from another kernel module), | |
39 | * given the provided data. | |
40 | * | |
41 | * The data pointer can be null. | |
42 | */ | |
43 | bool libceph_compatible(void *data) | |
44 | { | |
1e32d34c | 45 | return true; |
72fe25e3 AE |
46 | } |
47 | EXPORT_SYMBOL(libceph_compatible); | |
3d14c5d2 YS |
48 | |
49 | /* | |
50 | * find filename portion of a path (/foo/bar/baz -> baz) | |
51 | */ | |
52 | const char *ceph_file_part(const char *s, int len) | |
53 | { | |
54 | const char *e = s + len; | |
55 | ||
56 | while (e != s && *(e-1) != '/') | |
57 | e--; | |
58 | return e; | |
59 | } | |
60 | EXPORT_SYMBOL(ceph_file_part); | |
61 | ||
62 | const char *ceph_msg_type_name(int type) | |
63 | { | |
64 | switch (type) { | |
65 | case CEPH_MSG_SHUTDOWN: return "shutdown"; | |
66 | case CEPH_MSG_PING: return "ping"; | |
67 | case CEPH_MSG_AUTH: return "auth"; | |
68 | case CEPH_MSG_AUTH_REPLY: return "auth_reply"; | |
69 | case CEPH_MSG_MON_MAP: return "mon_map"; | |
70 | case CEPH_MSG_MON_GET_MAP: return "mon_get_map"; | |
71 | case CEPH_MSG_MON_SUBSCRIBE: return "mon_subscribe"; | |
72 | case CEPH_MSG_MON_SUBSCRIBE_ACK: return "mon_subscribe_ack"; | |
73 | case CEPH_MSG_STATFS: return "statfs"; | |
74 | case CEPH_MSG_STATFS_REPLY: return "statfs_reply"; | |
513a8243 ID |
75 | case CEPH_MSG_MON_GET_VERSION: return "mon_get_version"; |
76 | case CEPH_MSG_MON_GET_VERSION_REPLY: return "mon_get_version_reply"; | |
3d14c5d2 YS |
77 | case CEPH_MSG_MDS_MAP: return "mds_map"; |
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_SNAP: return "client_snap"; | |
86 | case CEPH_MSG_CLIENT_LEASE: return "client_lease"; | |
87 | case CEPH_MSG_OSD_MAP: return "osd_map"; | |
88 | case CEPH_MSG_OSD_OP: return "osd_op"; | |
89 | case CEPH_MSG_OSD_OPREPLY: return "osd_opreply"; | |
a40c4f10 | 90 | case CEPH_MSG_WATCH_NOTIFY: return "watch_notify"; |
3d14c5d2 YS |
91 | default: return "unknown"; |
92 | } | |
93 | } | |
94 | EXPORT_SYMBOL(ceph_msg_type_name); | |
95 | ||
96 | /* | |
97 | * Initially learn our fsid, or verify an fsid matches. | |
98 | */ | |
99 | int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid) | |
100 | { | |
101 | if (client->have_fsid) { | |
102 | if (ceph_fsid_compare(&client->fsid, fsid)) { | |
103 | pr_err("bad fsid, had %pU got %pU", | |
104 | &client->fsid, fsid); | |
105 | return -1; | |
106 | } | |
107 | } else { | |
3d14c5d2 | 108 | memcpy(&client->fsid, fsid, sizeof(*fsid)); |
3d14c5d2 YS |
109 | } |
110 | return 0; | |
111 | } | |
112 | EXPORT_SYMBOL(ceph_check_fsid); | |
113 | ||
114 | static int strcmp_null(const char *s1, const char *s2) | |
115 | { | |
116 | if (!s1 && !s2) | |
117 | return 0; | |
118 | if (s1 && !s2) | |
119 | return -1; | |
120 | if (!s1 && s2) | |
121 | return 1; | |
122 | return strcmp(s1, s2); | |
123 | } | |
124 | ||
125 | int ceph_compare_options(struct ceph_options *new_opt, | |
126 | struct ceph_client *client) | |
127 | { | |
128 | struct ceph_options *opt1 = new_opt; | |
129 | struct ceph_options *opt2 = client->options; | |
130 | int ofs = offsetof(struct ceph_options, mon_addr); | |
131 | int i; | |
132 | int ret; | |
133 | ||
134 | ret = memcmp(opt1, opt2, ofs); | |
135 | if (ret) | |
136 | return ret; | |
137 | ||
138 | ret = strcmp_null(opt1->name, opt2->name); | |
139 | if (ret) | |
140 | return ret; | |
141 | ||
8323c3aa TV |
142 | if (opt1->key && !opt2->key) |
143 | return -1; | |
144 | if (!opt1->key && opt2->key) | |
145 | return 1; | |
146 | if (opt1->key && opt2->key) { | |
147 | if (opt1->key->type != opt2->key->type) | |
148 | return -1; | |
149 | if (opt1->key->created.tv_sec != opt2->key->created.tv_sec) | |
150 | return -1; | |
151 | if (opt1->key->created.tv_nsec != opt2->key->created.tv_nsec) | |
152 | return -1; | |
153 | if (opt1->key->len != opt2->key->len) | |
154 | return -1; | |
155 | if (opt1->key->key && !opt2->key->key) | |
156 | return -1; | |
157 | if (!opt1->key->key && opt2->key->key) | |
158 | return 1; | |
159 | if (opt1->key->key && opt2->key->key) { | |
160 | ret = memcmp(opt1->key->key, opt2->key->key, opt1->key->len); | |
161 | if (ret) | |
162 | return ret; | |
163 | } | |
164 | } | |
3d14c5d2 YS |
165 | |
166 | /* any matching mon ip implies a match */ | |
167 | for (i = 0; i < opt1->num_mon; i++) { | |
168 | if (ceph_monmap_contains(client->monc.monmap, | |
169 | &opt1->mon_addr[i])) | |
170 | return 0; | |
171 | } | |
172 | return -1; | |
173 | } | |
174 | EXPORT_SYMBOL(ceph_compare_options); | |
175 | ||
eeb0bed5 ID |
176 | void *ceph_kvmalloc(size_t size, gfp_t flags) |
177 | { | |
178 | if (size <= (PAGE_SIZE << PAGE_ALLOC_COSTLY_ORDER)) { | |
179 | void *ptr = kmalloc(size, flags | __GFP_NOWARN); | |
180 | if (ptr) | |
181 | return ptr; | |
182 | } | |
183 | ||
184 | return __vmalloc(size, flags | __GFP_HIGHMEM, PAGE_KERNEL); | |
185 | } | |
186 | ||
187 | void ceph_kvfree(const void *ptr) | |
188 | { | |
189 | if (is_vmalloc_addr(ptr)) | |
190 | vfree(ptr); | |
191 | else | |
192 | kfree(ptr); | |
193 | } | |
194 | ||
3d14c5d2 YS |
195 | |
196 | static int parse_fsid(const char *str, struct ceph_fsid *fsid) | |
197 | { | |
198 | int i = 0; | |
199 | char tmp[3]; | |
200 | int err = -EINVAL; | |
201 | int d; | |
202 | ||
203 | dout("parse_fsid '%s'\n", str); | |
204 | tmp[2] = 0; | |
205 | while (*str && i < 16) { | |
206 | if (ispunct(*str)) { | |
207 | str++; | |
208 | continue; | |
209 | } | |
210 | if (!isxdigit(str[0]) || !isxdigit(str[1])) | |
211 | break; | |
212 | tmp[0] = str[0]; | |
213 | tmp[1] = str[1]; | |
214 | if (sscanf(tmp, "%x", &d) < 1) | |
215 | break; | |
216 | fsid->fsid[i] = d & 0xff; | |
217 | i++; | |
218 | str += 2; | |
219 | } | |
220 | ||
221 | if (i == 16) | |
222 | err = 0; | |
223 | dout("parse_fsid ret %d got fsid %pU", err, fsid); | |
224 | return err; | |
225 | } | |
226 | ||
227 | /* | |
228 | * ceph options | |
229 | */ | |
230 | enum { | |
231 | Opt_osdtimeout, | |
232 | Opt_osdkeepalivetimeout, | |
233 | Opt_mount_timeout, | |
234 | Opt_osd_idle_ttl, | |
235 | Opt_last_int, | |
236 | /* int args above */ | |
237 | Opt_fsid, | |
238 | Opt_name, | |
239 | Opt_secret, | |
e2c3d29b | 240 | Opt_key, |
3d14c5d2 YS |
241 | Opt_ip, |
242 | Opt_last_string, | |
243 | /* string args above */ | |
cffaba15 | 244 | Opt_share, |
3d14c5d2 | 245 | Opt_noshare, |
cffaba15 | 246 | Opt_crc, |
3d14c5d2 YS |
247 | Opt_nocrc, |
248 | }; | |
249 | ||
250 | static match_table_t opt_tokens = { | |
251 | {Opt_osdtimeout, "osdtimeout=%d"}, | |
252 | {Opt_osdkeepalivetimeout, "osdkeepalive=%d"}, | |
253 | {Opt_mount_timeout, "mount_timeout=%d"}, | |
254 | {Opt_osd_idle_ttl, "osd_idle_ttl=%d"}, | |
255 | /* int args above */ | |
256 | {Opt_fsid, "fsid=%s"}, | |
257 | {Opt_name, "name=%s"}, | |
258 | {Opt_secret, "secret=%s"}, | |
e2c3d29b | 259 | {Opt_key, "key=%s"}, |
3d14c5d2 YS |
260 | {Opt_ip, "ip=%s"}, |
261 | /* string args above */ | |
cffaba15 | 262 | {Opt_share, "share"}, |
3d14c5d2 | 263 | {Opt_noshare, "noshare"}, |
cffaba15 | 264 | {Opt_crc, "crc"}, |
3d14c5d2 YS |
265 | {Opt_nocrc, "nocrc"}, |
266 | {-1, NULL} | |
267 | }; | |
268 | ||
269 | void ceph_destroy_options(struct ceph_options *opt) | |
270 | { | |
271 | dout("destroy_options %p\n", opt); | |
272 | kfree(opt->name); | |
8323c3aa TV |
273 | if (opt->key) { |
274 | ceph_crypto_key_destroy(opt->key); | |
275 | kfree(opt->key); | |
276 | } | |
1cad7893 | 277 | kfree(opt->mon_addr); |
3d14c5d2 YS |
278 | kfree(opt); |
279 | } | |
280 | EXPORT_SYMBOL(ceph_destroy_options); | |
281 | ||
e2c3d29b TV |
282 | /* get secret from key store */ |
283 | static int get_secret(struct ceph_crypto_key *dst, const char *name) { | |
284 | struct key *ukey; | |
285 | int key_err; | |
286 | int err = 0; | |
4b2a58ab | 287 | struct ceph_crypto_key *ckey; |
e2c3d29b | 288 | |
4b2a58ab | 289 | ukey = request_key(&key_type_ceph, name, NULL); |
e2c3d29b TV |
290 | if (!ukey || IS_ERR(ukey)) { |
291 | /* request_key errors don't map nicely to mount(2) | |
292 | errors; don't even try, but still printk */ | |
293 | key_err = PTR_ERR(ukey); | |
294 | switch (key_err) { | |
295 | case -ENOKEY: | |
296 | pr_warning("ceph: Mount failed due to key not found: %s\n", name); | |
297 | break; | |
298 | case -EKEYEXPIRED: | |
299 | pr_warning("ceph: Mount failed due to expired key: %s\n", name); | |
300 | break; | |
301 | case -EKEYREVOKED: | |
302 | pr_warning("ceph: Mount failed due to revoked key: %s\n", name); | |
303 | break; | |
304 | default: | |
305 | pr_warning("ceph: Mount failed due to unknown key error" | |
306 | " %d: %s\n", key_err, name); | |
307 | } | |
308 | err = -EPERM; | |
309 | goto out; | |
310 | } | |
311 | ||
4b2a58ab TV |
312 | ckey = ukey->payload.data; |
313 | err = ceph_crypto_key_clone(dst, ckey); | |
e2c3d29b TV |
314 | if (err) |
315 | goto out_key; | |
316 | /* pass through, err is 0 */ | |
317 | ||
318 | out_key: | |
319 | key_put(ukey); | |
320 | out: | |
321 | return err; | |
322 | } | |
323 | ||
ee57741c AE |
324 | struct ceph_options * |
325 | ceph_parse_options(char *options, const char *dev_name, | |
326 | const char *dev_name_end, | |
327 | int (*parse_extra_token)(char *c, void *private), | |
328 | void *private) | |
3d14c5d2 YS |
329 | { |
330 | struct ceph_options *opt; | |
331 | const char *c; | |
332 | int err = -ENOMEM; | |
333 | substring_t argstr[MAX_OPT_ARGS]; | |
334 | ||
eea553c2 EB |
335 | if (current->nsproxy->net_ns != &init_net) |
336 | return ERR_PTR(-EINVAL); | |
337 | ||
3d14c5d2 YS |
338 | opt = kzalloc(sizeof(*opt), GFP_KERNEL); |
339 | if (!opt) | |
ee57741c | 340 | return ERR_PTR(-ENOMEM); |
3d14c5d2 YS |
341 | opt->mon_addr = kcalloc(CEPH_MAX_MON, sizeof(*opt->mon_addr), |
342 | GFP_KERNEL); | |
343 | if (!opt->mon_addr) | |
344 | goto out; | |
345 | ||
346 | dout("parse_options %p options '%s' dev_name '%s'\n", opt, options, | |
347 | dev_name); | |
348 | ||
349 | /* start with defaults */ | |
350 | opt->flags = CEPH_OPT_DEFAULT; | |
3d14c5d2 YS |
351 | opt->osd_keepalive_timeout = CEPH_OSD_KEEPALIVE_DEFAULT; |
352 | opt->mount_timeout = CEPH_MOUNT_TIMEOUT_DEFAULT; /* seconds */ | |
353 | opt->osd_idle_ttl = CEPH_OSD_IDLE_TTL_DEFAULT; /* seconds */ | |
354 | ||
355 | /* get mon ip(s) */ | |
356 | /* ip1[:port1][,ip2[:port2]...] */ | |
357 | err = ceph_parse_ips(dev_name, dev_name_end, opt->mon_addr, | |
358 | CEPH_MAX_MON, &opt->num_mon); | |
359 | if (err < 0) | |
360 | goto out; | |
361 | ||
362 | /* parse mount options */ | |
363 | while ((c = strsep(&options, ",")) != NULL) { | |
364 | int token, intval, ret; | |
365 | if (!*c) | |
366 | continue; | |
367 | err = -EINVAL; | |
368 | token = match_token((char *)c, opt_tokens, argstr); | |
010e3b48 | 369 | if (token < 0 && parse_extra_token) { |
3d14c5d2 YS |
370 | /* extra? */ |
371 | err = parse_extra_token((char *)c, private); | |
372 | if (err < 0) { | |
373 | pr_err("bad option at '%s'\n", c); | |
374 | goto out; | |
375 | } | |
376 | continue; | |
377 | } | |
378 | if (token < Opt_last_int) { | |
379 | ret = match_int(&argstr[0], &intval); | |
380 | if (ret < 0) { | |
381 | pr_err("bad mount option arg (not int) " | |
382 | "at '%s'\n", c); | |
383 | continue; | |
384 | } | |
385 | dout("got int token %d val %d\n", token, intval); | |
386 | } else if (token > Opt_last_int && token < Opt_last_string) { | |
387 | dout("got string token %d val %s\n", token, | |
388 | argstr[0].from); | |
389 | } else { | |
390 | dout("got token %d\n", token); | |
391 | } | |
392 | switch (token) { | |
393 | case Opt_ip: | |
394 | err = ceph_parse_ips(argstr[0].from, | |
395 | argstr[0].to, | |
396 | &opt->my_addr, | |
397 | 1, NULL); | |
398 | if (err < 0) | |
399 | goto out; | |
400 | opt->flags |= CEPH_OPT_MYIP; | |
401 | break; | |
402 | ||
403 | case Opt_fsid: | |
404 | err = parse_fsid(argstr[0].from, &opt->fsid); | |
405 | if (err == 0) | |
406 | opt->flags |= CEPH_OPT_FSID; | |
407 | break; | |
408 | case Opt_name: | |
409 | opt->name = kstrndup(argstr[0].from, | |
410 | argstr[0].to-argstr[0].from, | |
411 | GFP_KERNEL); | |
412 | break; | |
413 | case Opt_secret: | |
8323c3aa TV |
414 | opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL); |
415 | if (!opt->key) { | |
416 | err = -ENOMEM; | |
417 | goto out; | |
418 | } | |
419 | err = ceph_crypto_key_unarmor(opt->key, argstr[0].from); | |
420 | if (err < 0) | |
421 | goto out; | |
3d14c5d2 | 422 | break; |
e2c3d29b TV |
423 | case Opt_key: |
424 | opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL); | |
425 | if (!opt->key) { | |
426 | err = -ENOMEM; | |
427 | goto out; | |
428 | } | |
429 | err = get_secret(opt->key, argstr[0].from); | |
430 | if (err < 0) | |
431 | goto out; | |
432 | break; | |
3d14c5d2 YS |
433 | |
434 | /* misc */ | |
435 | case Opt_osdtimeout: | |
83aff95e | 436 | pr_warning("ignoring deprecated osdtimeout option\n"); |
3d14c5d2 YS |
437 | break; |
438 | case Opt_osdkeepalivetimeout: | |
439 | opt->osd_keepalive_timeout = intval; | |
440 | break; | |
441 | case Opt_osd_idle_ttl: | |
442 | opt->osd_idle_ttl = intval; | |
443 | break; | |
444 | case Opt_mount_timeout: | |
445 | opt->mount_timeout = intval; | |
446 | break; | |
447 | ||
cffaba15 AE |
448 | case Opt_share: |
449 | opt->flags &= ~CEPH_OPT_NOSHARE; | |
450 | break; | |
3d14c5d2 YS |
451 | case Opt_noshare: |
452 | opt->flags |= CEPH_OPT_NOSHARE; | |
453 | break; | |
454 | ||
cffaba15 AE |
455 | case Opt_crc: |
456 | opt->flags &= ~CEPH_OPT_NOCRC; | |
457 | break; | |
3d14c5d2 YS |
458 | case Opt_nocrc: |
459 | opt->flags |= CEPH_OPT_NOCRC; | |
460 | break; | |
461 | ||
462 | default: | |
463 | BUG_ON(token); | |
464 | } | |
465 | } | |
466 | ||
467 | /* success */ | |
ee57741c | 468 | return opt; |
3d14c5d2 YS |
469 | |
470 | out: | |
471 | ceph_destroy_options(opt); | |
ee57741c | 472 | return ERR_PTR(err); |
3d14c5d2 YS |
473 | } |
474 | EXPORT_SYMBOL(ceph_parse_options); | |
475 | ||
476 | u64 ceph_client_id(struct ceph_client *client) | |
477 | { | |
478 | return client->monc.auth->global_id; | |
479 | } | |
480 | EXPORT_SYMBOL(ceph_client_id); | |
481 | ||
482 | /* | |
483 | * create a fresh client instance | |
484 | */ | |
6ab00d46 | 485 | struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private, |
12b4629a ID |
486 | u64 supported_features, |
487 | u64 required_features) | |
3d14c5d2 YS |
488 | { |
489 | struct ceph_client *client; | |
6ab00d46 | 490 | struct ceph_entity_addr *myaddr = NULL; |
3d14c5d2 YS |
491 | int err = -ENOMEM; |
492 | ||
493 | client = kzalloc(sizeof(*client), GFP_KERNEL); | |
494 | if (client == NULL) | |
495 | return ERR_PTR(-ENOMEM); | |
496 | ||
497 | client->private = private; | |
498 | client->options = opt; | |
499 | ||
500 | mutex_init(&client->mount_mutex); | |
501 | init_waitqueue_head(&client->auth_wq); | |
502 | client->auth_err = 0; | |
503 | ||
504 | client->extra_mon_dispatch = NULL; | |
1fe60e51 | 505 | client->supported_features = CEPH_FEATURES_SUPPORTED_DEFAULT | |
6ab00d46 | 506 | supported_features; |
1fe60e51 | 507 | client->required_features = CEPH_FEATURES_REQUIRED_DEFAULT | |
6ab00d46 SW |
508 | required_features; |
509 | ||
510 | /* msgr */ | |
511 | if (ceph_test_opt(client, MYIP)) | |
512 | myaddr = &client->options->my_addr; | |
15d9882c AE |
513 | ceph_messenger_init(&client->msgr, myaddr, |
514 | client->supported_features, | |
515 | client->required_features, | |
516 | ceph_test_opt(client, NOCRC)); | |
3d14c5d2 YS |
517 | |
518 | /* subsystems */ | |
519 | err = ceph_monc_init(&client->monc, client); | |
520 | if (err < 0) | |
15d9882c | 521 | goto fail; |
3d14c5d2 YS |
522 | err = ceph_osdc_init(&client->osdc, client); |
523 | if (err < 0) | |
524 | goto fail_monc; | |
525 | ||
526 | return client; | |
527 | ||
528 | fail_monc: | |
529 | ceph_monc_stop(&client->monc); | |
530 | fail: | |
531 | kfree(client); | |
532 | return ERR_PTR(err); | |
533 | } | |
534 | EXPORT_SYMBOL(ceph_create_client); | |
535 | ||
536 | void ceph_destroy_client(struct ceph_client *client) | |
537 | { | |
538 | dout("destroy_client %p\n", client); | |
539 | ||
a2a32584 GH |
540 | atomic_set(&client->msgr.stopping, 1); |
541 | ||
3d14c5d2 YS |
542 | /* unmount */ |
543 | ceph_osdc_stop(&client->osdc); | |
544 | ||
3d14c5d2 YS |
545 | ceph_monc_stop(&client->monc); |
546 | ||
547 | ceph_debugfs_client_cleanup(client); | |
548 | ||
3d14c5d2 YS |
549 | ceph_destroy_options(client->options); |
550 | ||
551 | kfree(client); | |
552 | dout("destroy_client %p done\n", client); | |
553 | } | |
554 | EXPORT_SYMBOL(ceph_destroy_client); | |
555 | ||
556 | /* | |
557 | * true if we have the mon map (and have thus joined the cluster) | |
558 | */ | |
559 | static int have_mon_and_osd_map(struct ceph_client *client) | |
560 | { | |
561 | return client->monc.monmap && client->monc.monmap->epoch && | |
562 | client->osdc.osdmap && client->osdc.osdmap->epoch; | |
563 | } | |
564 | ||
565 | /* | |
566 | * mount: join the ceph cluster, and open root directory. | |
567 | */ | |
568 | int __ceph_open_session(struct ceph_client *client, unsigned long started) | |
569 | { | |
3d14c5d2 YS |
570 | int err; |
571 | unsigned long timeout = client->options->mount_timeout * HZ; | |
572 | ||
3d14c5d2 YS |
573 | /* open session, and wait for mon and osd maps */ |
574 | err = ceph_monc_open_session(&client->monc); | |
575 | if (err < 0) | |
576 | return err; | |
577 | ||
578 | while (!have_mon_and_osd_map(client)) { | |
579 | err = -EIO; | |
580 | if (timeout && time_after_eq(jiffies, started + timeout)) | |
581 | return err; | |
582 | ||
583 | /* wait */ | |
584 | dout("mount waiting for mon_map\n"); | |
585 | err = wait_event_interruptible_timeout(client->auth_wq, | |
586 | have_mon_and_osd_map(client) || (client->auth_err < 0), | |
587 | timeout); | |
588 | if (err == -EINTR || err == -ERESTARTSYS) | |
589 | return err; | |
590 | if (client->auth_err < 0) | |
591 | return client->auth_err; | |
592 | } | |
593 | ||
594 | return 0; | |
595 | } | |
596 | EXPORT_SYMBOL(__ceph_open_session); | |
597 | ||
598 | ||
599 | int ceph_open_session(struct ceph_client *client) | |
600 | { | |
601 | int ret; | |
602 | unsigned long started = jiffies; /* note the start time */ | |
603 | ||
604 | dout("open_session start\n"); | |
605 | mutex_lock(&client->mount_mutex); | |
606 | ||
607 | ret = __ceph_open_session(client, started); | |
608 | ||
609 | mutex_unlock(&client->mount_mutex); | |
610 | return ret; | |
611 | } | |
612 | EXPORT_SYMBOL(ceph_open_session); | |
613 | ||
614 | ||
615 | static int __init init_ceph_lib(void) | |
616 | { | |
617 | int ret = 0; | |
618 | ||
619 | ret = ceph_debugfs_init(); | |
620 | if (ret < 0) | |
621 | goto out; | |
622 | ||
4b2a58ab | 623 | ret = ceph_crypto_init(); |
3d14c5d2 YS |
624 | if (ret < 0) |
625 | goto out_debugfs; | |
626 | ||
4b2a58ab TV |
627 | ret = ceph_msgr_init(); |
628 | if (ret < 0) | |
629 | goto out_crypto; | |
630 | ||
5522ae0b AE |
631 | ret = ceph_osdc_setup(); |
632 | if (ret < 0) | |
633 | goto out_msgr; | |
634 | ||
4f6a7e5e SW |
635 | pr_info("loaded (mon/osd proto %d/%d)\n", |
636 | CEPH_MONC_PROTOCOL, CEPH_OSDC_PROTOCOL); | |
3d14c5d2 YS |
637 | |
638 | return 0; | |
639 | ||
5522ae0b AE |
640 | out_msgr: |
641 | ceph_msgr_exit(); | |
4b2a58ab TV |
642 | out_crypto: |
643 | ceph_crypto_shutdown(); | |
3d14c5d2 YS |
644 | out_debugfs: |
645 | ceph_debugfs_cleanup(); | |
646 | out: | |
647 | return ret; | |
648 | } | |
649 | ||
650 | static void __exit exit_ceph_lib(void) | |
651 | { | |
652 | dout("exit_ceph_lib\n"); | |
5522ae0b | 653 | ceph_osdc_cleanup(); |
3d14c5d2 | 654 | ceph_msgr_exit(); |
4b2a58ab | 655 | ceph_crypto_shutdown(); |
3d14c5d2 YS |
656 | ceph_debugfs_cleanup(); |
657 | } | |
658 | ||
659 | module_init(init_ceph_lib); | |
660 | module_exit(exit_ceph_lib); | |
661 | ||
662 | MODULE_AUTHOR("Sage Weil <sage@newdream.net>"); | |
663 | MODULE_AUTHOR("Yehuda Sadeh <yehuda@hq.newdream.net>"); | |
664 | MODULE_AUTHOR("Patience Warnick <patience@newdream.net>"); | |
665 | MODULE_DESCRIPTION("Ceph filesystem for Linux"); | |
666 | MODULE_LICENSE("GPL"); |