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