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