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> | |
757856d2 | 12 | #include <linux/nsproxy.h> |
3d14c5d2 YS |
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> | |
eeb0bed5 | 19 | #include <linux/vmalloc.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"; | |
513a8243 ID |
74 | case CEPH_MSG_MON_GET_VERSION: return "mon_get_version"; |
75 | case CEPH_MSG_MON_GET_VERSION_REPLY: return "mon_get_version_reply"; | |
3d14c5d2 YS |
76 | case CEPH_MSG_MDS_MAP: return "mds_map"; |
77 | case CEPH_MSG_CLIENT_SESSION: return "client_session"; | |
78 | case CEPH_MSG_CLIENT_RECONNECT: return "client_reconnect"; | |
79 | case CEPH_MSG_CLIENT_REQUEST: return "client_request"; | |
80 | case CEPH_MSG_CLIENT_REQUEST_FORWARD: return "client_request_forward"; | |
81 | case CEPH_MSG_CLIENT_REPLY: return "client_reply"; | |
82 | case CEPH_MSG_CLIENT_CAPS: return "client_caps"; | |
83 | case CEPH_MSG_CLIENT_CAPRELEASE: return "client_cap_release"; | |
84 | case CEPH_MSG_CLIENT_SNAP: return "client_snap"; | |
85 | case CEPH_MSG_CLIENT_LEASE: return "client_lease"; | |
86 | case CEPH_MSG_OSD_MAP: return "osd_map"; | |
87 | case CEPH_MSG_OSD_OP: return "osd_op"; | |
88 | case CEPH_MSG_OSD_OPREPLY: return "osd_opreply"; | |
a40c4f10 | 89 | case CEPH_MSG_WATCH_NOTIFY: return "watch_notify"; |
3d14c5d2 YS |
90 | default: return "unknown"; |
91 | } | |
92 | } | |
93 | EXPORT_SYMBOL(ceph_msg_type_name); | |
94 | ||
95 | /* | |
96 | * Initially learn our fsid, or verify an fsid matches. | |
97 | */ | |
98 | int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid) | |
99 | { | |
100 | if (client->have_fsid) { | |
101 | if (ceph_fsid_compare(&client->fsid, fsid)) { | |
102 | pr_err("bad fsid, had %pU got %pU", | |
103 | &client->fsid, fsid); | |
104 | return -1; | |
105 | } | |
106 | } else { | |
3d14c5d2 | 107 | memcpy(&client->fsid, fsid, sizeof(*fsid)); |
3d14c5d2 YS |
108 | } |
109 | return 0; | |
110 | } | |
111 | EXPORT_SYMBOL(ceph_check_fsid); | |
112 | ||
113 | static int strcmp_null(const char *s1, const char *s2) | |
114 | { | |
115 | if (!s1 && !s2) | |
116 | return 0; | |
117 | if (s1 && !s2) | |
118 | return -1; | |
119 | if (!s1 && s2) | |
120 | return 1; | |
121 | return strcmp(s1, s2); | |
122 | } | |
123 | ||
124 | int ceph_compare_options(struct ceph_options *new_opt, | |
125 | struct ceph_client *client) | |
126 | { | |
127 | struct ceph_options *opt1 = new_opt; | |
128 | struct ceph_options *opt2 = client->options; | |
129 | int ofs = offsetof(struct ceph_options, mon_addr); | |
130 | int i; | |
131 | int ret; | |
132 | ||
757856d2 ID |
133 | /* |
134 | * Don't bother comparing options if network namespaces don't | |
135 | * match. | |
136 | */ | |
137 | if (!net_eq(current->nsproxy->net_ns, read_pnet(&client->msgr.net))) | |
138 | return -1; | |
139 | ||
3d14c5d2 YS |
140 | ret = memcmp(opt1, opt2, ofs); |
141 | if (ret) | |
142 | return ret; | |
143 | ||
144 | ret = strcmp_null(opt1->name, opt2->name); | |
145 | if (ret) | |
146 | return ret; | |
147 | ||
8323c3aa TV |
148 | if (opt1->key && !opt2->key) |
149 | return -1; | |
150 | if (!opt1->key && opt2->key) | |
151 | return 1; | |
152 | if (opt1->key && opt2->key) { | |
153 | if (opt1->key->type != opt2->key->type) | |
154 | return -1; | |
155 | if (opt1->key->created.tv_sec != opt2->key->created.tv_sec) | |
156 | return -1; | |
157 | if (opt1->key->created.tv_nsec != opt2->key->created.tv_nsec) | |
158 | return -1; | |
159 | if (opt1->key->len != opt2->key->len) | |
160 | return -1; | |
161 | if (opt1->key->key && !opt2->key->key) | |
162 | return -1; | |
163 | if (!opt1->key->key && opt2->key->key) | |
164 | return 1; | |
165 | if (opt1->key->key && opt2->key->key) { | |
166 | ret = memcmp(opt1->key->key, opt2->key->key, opt1->key->len); | |
167 | if (ret) | |
168 | return ret; | |
169 | } | |
170 | } | |
3d14c5d2 YS |
171 | |
172 | /* any matching mon ip implies a match */ | |
173 | for (i = 0; i < opt1->num_mon; i++) { | |
174 | if (ceph_monmap_contains(client->monc.monmap, | |
175 | &opt1->mon_addr[i])) | |
176 | return 0; | |
177 | } | |
178 | return -1; | |
179 | } | |
180 | EXPORT_SYMBOL(ceph_compare_options); | |
181 | ||
eeb0bed5 ID |
182 | void *ceph_kvmalloc(size_t size, gfp_t flags) |
183 | { | |
184 | if (size <= (PAGE_SIZE << PAGE_ALLOC_COSTLY_ORDER)) { | |
185 | void *ptr = kmalloc(size, flags | __GFP_NOWARN); | |
186 | if (ptr) | |
187 | return ptr; | |
188 | } | |
189 | ||
190 | return __vmalloc(size, flags | __GFP_HIGHMEM, PAGE_KERNEL); | |
191 | } | |
192 | ||
3d14c5d2 YS |
193 | |
194 | static int parse_fsid(const char *str, struct ceph_fsid *fsid) | |
195 | { | |
196 | int i = 0; | |
197 | char tmp[3]; | |
198 | int err = -EINVAL; | |
199 | int d; | |
200 | ||
201 | dout("parse_fsid '%s'\n", str); | |
202 | tmp[2] = 0; | |
203 | while (*str && i < 16) { | |
204 | if (ispunct(*str)) { | |
205 | str++; | |
206 | continue; | |
207 | } | |
208 | if (!isxdigit(str[0]) || !isxdigit(str[1])) | |
209 | break; | |
210 | tmp[0] = str[0]; | |
211 | tmp[1] = str[1]; | |
212 | if (sscanf(tmp, "%x", &d) < 1) | |
213 | break; | |
214 | fsid->fsid[i] = d & 0xff; | |
215 | i++; | |
216 | str += 2; | |
217 | } | |
218 | ||
219 | if (i == 16) | |
220 | err = 0; | |
221 | dout("parse_fsid ret %d got fsid %pU", err, fsid); | |
222 | return err; | |
223 | } | |
224 | ||
225 | /* | |
226 | * ceph options | |
227 | */ | |
228 | enum { | |
229 | Opt_osdtimeout, | |
230 | Opt_osdkeepalivetimeout, | |
231 | Opt_mount_timeout, | |
232 | Opt_osd_idle_ttl, | |
233 | Opt_last_int, | |
234 | /* int args above */ | |
235 | Opt_fsid, | |
236 | Opt_name, | |
237 | Opt_secret, | |
e2c3d29b | 238 | Opt_key, |
3d14c5d2 YS |
239 | Opt_ip, |
240 | Opt_last_string, | |
241 | /* string args above */ | |
cffaba15 | 242 | Opt_share, |
3d14c5d2 | 243 | Opt_noshare, |
cffaba15 | 244 | Opt_crc, |
3d14c5d2 | 245 | Opt_nocrc, |
a3fc9800 YZ |
246 | Opt_cephx_require_signatures, |
247 | Opt_nocephx_require_signatures, | |
ba988f87 CH |
248 | Opt_tcp_nodelay, |
249 | Opt_notcp_nodelay, | |
3d14c5d2 YS |
250 | }; |
251 | ||
252 | static match_table_t opt_tokens = { | |
253 | {Opt_osdtimeout, "osdtimeout=%d"}, | |
254 | {Opt_osdkeepalivetimeout, "osdkeepalive=%d"}, | |
255 | {Opt_mount_timeout, "mount_timeout=%d"}, | |
256 | {Opt_osd_idle_ttl, "osd_idle_ttl=%d"}, | |
257 | /* int args above */ | |
258 | {Opt_fsid, "fsid=%s"}, | |
259 | {Opt_name, "name=%s"}, | |
260 | {Opt_secret, "secret=%s"}, | |
e2c3d29b | 261 | {Opt_key, "key=%s"}, |
3d14c5d2 YS |
262 | {Opt_ip, "ip=%s"}, |
263 | /* string args above */ | |
cffaba15 | 264 | {Opt_share, "share"}, |
3d14c5d2 | 265 | {Opt_noshare, "noshare"}, |
cffaba15 | 266 | {Opt_crc, "crc"}, |
3d14c5d2 | 267 | {Opt_nocrc, "nocrc"}, |
a3fc9800 YZ |
268 | {Opt_cephx_require_signatures, "cephx_require_signatures"}, |
269 | {Opt_nocephx_require_signatures, "nocephx_require_signatures"}, | |
ba988f87 CH |
270 | {Opt_tcp_nodelay, "tcp_nodelay"}, |
271 | {Opt_notcp_nodelay, "notcp_nodelay"}, | |
3d14c5d2 YS |
272 | {-1, NULL} |
273 | }; | |
274 | ||
275 | void ceph_destroy_options(struct ceph_options *opt) | |
276 | { | |
277 | dout("destroy_options %p\n", opt); | |
278 | kfree(opt->name); | |
8323c3aa TV |
279 | if (opt->key) { |
280 | ceph_crypto_key_destroy(opt->key); | |
281 | kfree(opt->key); | |
282 | } | |
1cad7893 | 283 | kfree(opt->mon_addr); |
3d14c5d2 YS |
284 | kfree(opt); |
285 | } | |
286 | EXPORT_SYMBOL(ceph_destroy_options); | |
287 | ||
e2c3d29b TV |
288 | /* get secret from key store */ |
289 | static int get_secret(struct ceph_crypto_key *dst, const char *name) { | |
290 | struct key *ukey; | |
291 | int key_err; | |
292 | int err = 0; | |
4b2a58ab | 293 | struct ceph_crypto_key *ckey; |
e2c3d29b | 294 | |
4b2a58ab | 295 | ukey = request_key(&key_type_ceph, name, NULL); |
e2c3d29b TV |
296 | if (!ukey || IS_ERR(ukey)) { |
297 | /* request_key errors don't map nicely to mount(2) | |
298 | errors; don't even try, but still printk */ | |
299 | key_err = PTR_ERR(ukey); | |
300 | switch (key_err) { | |
301 | case -ENOKEY: | |
b9a67899 JP |
302 | pr_warn("ceph: Mount failed due to key not found: %s\n", |
303 | name); | |
e2c3d29b TV |
304 | break; |
305 | case -EKEYEXPIRED: | |
b9a67899 JP |
306 | pr_warn("ceph: Mount failed due to expired key: %s\n", |
307 | name); | |
e2c3d29b TV |
308 | break; |
309 | case -EKEYREVOKED: | |
b9a67899 JP |
310 | pr_warn("ceph: Mount failed due to revoked key: %s\n", |
311 | name); | |
e2c3d29b TV |
312 | break; |
313 | default: | |
b9a67899 JP |
314 | pr_warn("ceph: Mount failed due to unknown key error %d: %s\n", |
315 | key_err, name); | |
e2c3d29b TV |
316 | } |
317 | err = -EPERM; | |
318 | goto out; | |
319 | } | |
320 | ||
146aa8b1 | 321 | ckey = ukey->payload.data[0]; |
4b2a58ab | 322 | err = ceph_crypto_key_clone(dst, ckey); |
e2c3d29b TV |
323 | if (err) |
324 | goto out_key; | |
325 | /* pass through, err is 0 */ | |
326 | ||
327 | out_key: | |
328 | key_put(ukey); | |
329 | out: | |
330 | return err; | |
331 | } | |
332 | ||
ee57741c AE |
333 | struct ceph_options * |
334 | ceph_parse_options(char *options, const char *dev_name, | |
335 | const char *dev_name_end, | |
336 | int (*parse_extra_token)(char *c, void *private), | |
337 | void *private) | |
3d14c5d2 YS |
338 | { |
339 | struct ceph_options *opt; | |
340 | const char *c; | |
341 | int err = -ENOMEM; | |
342 | substring_t argstr[MAX_OPT_ARGS]; | |
343 | ||
344 | opt = kzalloc(sizeof(*opt), GFP_KERNEL); | |
345 | if (!opt) | |
ee57741c | 346 | return ERR_PTR(-ENOMEM); |
3d14c5d2 YS |
347 | opt->mon_addr = kcalloc(CEPH_MAX_MON, sizeof(*opt->mon_addr), |
348 | GFP_KERNEL); | |
349 | if (!opt->mon_addr) | |
350 | goto out; | |
351 | ||
352 | dout("parse_options %p options '%s' dev_name '%s'\n", opt, options, | |
353 | dev_name); | |
354 | ||
355 | /* start with defaults */ | |
356 | opt->flags = CEPH_OPT_DEFAULT; | |
3d14c5d2 | 357 | opt->osd_keepalive_timeout = CEPH_OSD_KEEPALIVE_DEFAULT; |
a319bf56 ID |
358 | opt->mount_timeout = CEPH_MOUNT_TIMEOUT_DEFAULT; |
359 | opt->osd_idle_ttl = CEPH_OSD_IDLE_TTL_DEFAULT; | |
8b9558aa | 360 | opt->monc_ping_timeout = CEPH_MONC_PING_TIMEOUT_DEFAULT; |
3d14c5d2 YS |
361 | |
362 | /* get mon ip(s) */ | |
363 | /* ip1[:port1][,ip2[:port2]...] */ | |
364 | err = ceph_parse_ips(dev_name, dev_name_end, opt->mon_addr, | |
365 | CEPH_MAX_MON, &opt->num_mon); | |
366 | if (err < 0) | |
367 | goto out; | |
368 | ||
369 | /* parse mount options */ | |
370 | while ((c = strsep(&options, ",")) != NULL) { | |
371 | int token, intval, ret; | |
372 | if (!*c) | |
373 | continue; | |
374 | err = -EINVAL; | |
375 | token = match_token((char *)c, opt_tokens, argstr); | |
010e3b48 | 376 | if (token < 0 && parse_extra_token) { |
3d14c5d2 YS |
377 | /* extra? */ |
378 | err = parse_extra_token((char *)c, private); | |
379 | if (err < 0) { | |
380 | pr_err("bad option at '%s'\n", c); | |
381 | goto out; | |
382 | } | |
383 | continue; | |
384 | } | |
385 | if (token < Opt_last_int) { | |
386 | ret = match_int(&argstr[0], &intval); | |
387 | if (ret < 0) { | |
388 | pr_err("bad mount option arg (not int) " | |
389 | "at '%s'\n", c); | |
390 | continue; | |
391 | } | |
392 | dout("got int token %d val %d\n", token, intval); | |
393 | } else if (token > Opt_last_int && token < Opt_last_string) { | |
394 | dout("got string token %d val %s\n", token, | |
395 | argstr[0].from); | |
396 | } else { | |
397 | dout("got token %d\n", token); | |
398 | } | |
399 | switch (token) { | |
400 | case Opt_ip: | |
401 | err = ceph_parse_ips(argstr[0].from, | |
402 | argstr[0].to, | |
403 | &opt->my_addr, | |
404 | 1, NULL); | |
405 | if (err < 0) | |
406 | goto out; | |
407 | opt->flags |= CEPH_OPT_MYIP; | |
408 | break; | |
409 | ||
410 | case Opt_fsid: | |
411 | err = parse_fsid(argstr[0].from, &opt->fsid); | |
412 | if (err == 0) | |
413 | opt->flags |= CEPH_OPT_FSID; | |
414 | break; | |
415 | case Opt_name: | |
416 | opt->name = kstrndup(argstr[0].from, | |
417 | argstr[0].to-argstr[0].from, | |
418 | GFP_KERNEL); | |
419 | break; | |
420 | case Opt_secret: | |
8323c3aa TV |
421 | opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL); |
422 | if (!opt->key) { | |
423 | err = -ENOMEM; | |
424 | goto out; | |
425 | } | |
426 | err = ceph_crypto_key_unarmor(opt->key, argstr[0].from); | |
427 | if (err < 0) | |
428 | goto out; | |
3d14c5d2 | 429 | break; |
e2c3d29b TV |
430 | case Opt_key: |
431 | opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL); | |
432 | if (!opt->key) { | |
433 | err = -ENOMEM; | |
434 | goto out; | |
435 | } | |
436 | err = get_secret(opt->key, argstr[0].from); | |
437 | if (err < 0) | |
438 | goto out; | |
439 | break; | |
3d14c5d2 YS |
440 | |
441 | /* misc */ | |
442 | case Opt_osdtimeout: | |
b9a67899 | 443 | pr_warn("ignoring deprecated osdtimeout option\n"); |
3d14c5d2 YS |
444 | break; |
445 | case Opt_osdkeepalivetimeout: | |
a319bf56 ID |
446 | /* 0 isn't well defined right now, reject it */ |
447 | if (intval < 1 || intval > INT_MAX / 1000) { | |
448 | pr_err("osdkeepalive out of range\n"); | |
449 | err = -EINVAL; | |
450 | goto out; | |
451 | } | |
452 | opt->osd_keepalive_timeout = | |
453 | msecs_to_jiffies(intval * 1000); | |
3d14c5d2 YS |
454 | break; |
455 | case Opt_osd_idle_ttl: | |
a319bf56 ID |
456 | /* 0 isn't well defined right now, reject it */ |
457 | if (intval < 1 || intval > INT_MAX / 1000) { | |
458 | pr_err("osd_idle_ttl out of range\n"); | |
459 | err = -EINVAL; | |
460 | goto out; | |
461 | } | |
462 | opt->osd_idle_ttl = msecs_to_jiffies(intval * 1000); | |
3d14c5d2 YS |
463 | break; |
464 | case Opt_mount_timeout: | |
a319bf56 ID |
465 | /* 0 is "wait forever" (i.e. infinite timeout) */ |
466 | if (intval < 0 || intval > INT_MAX / 1000) { | |
467 | pr_err("mount_timeout out of range\n"); | |
468 | err = -EINVAL; | |
469 | goto out; | |
470 | } | |
471 | opt->mount_timeout = msecs_to_jiffies(intval * 1000); | |
3d14c5d2 YS |
472 | break; |
473 | ||
cffaba15 AE |
474 | case Opt_share: |
475 | opt->flags &= ~CEPH_OPT_NOSHARE; | |
476 | break; | |
3d14c5d2 YS |
477 | case Opt_noshare: |
478 | opt->flags |= CEPH_OPT_NOSHARE; | |
479 | break; | |
480 | ||
cffaba15 AE |
481 | case Opt_crc: |
482 | opt->flags &= ~CEPH_OPT_NOCRC; | |
483 | break; | |
3d14c5d2 YS |
484 | case Opt_nocrc: |
485 | opt->flags |= CEPH_OPT_NOCRC; | |
486 | break; | |
ba988f87 | 487 | |
a3fc9800 YZ |
488 | case Opt_cephx_require_signatures: |
489 | opt->flags &= ~CEPH_OPT_NOMSGAUTH; | |
490 | break; | |
491 | case Opt_nocephx_require_signatures: | |
492 | opt->flags |= CEPH_OPT_NOMSGAUTH; | |
493 | break; | |
3d14c5d2 | 494 | |
ba988f87 CH |
495 | case Opt_tcp_nodelay: |
496 | opt->flags |= CEPH_OPT_TCP_NODELAY; | |
497 | break; | |
498 | case Opt_notcp_nodelay: | |
499 | opt->flags &= ~CEPH_OPT_TCP_NODELAY; | |
500 | break; | |
501 | ||
3d14c5d2 YS |
502 | default: |
503 | BUG_ON(token); | |
504 | } | |
505 | } | |
506 | ||
507 | /* success */ | |
ee57741c | 508 | return opt; |
3d14c5d2 YS |
509 | |
510 | out: | |
511 | ceph_destroy_options(opt); | |
ee57741c | 512 | return ERR_PTR(err); |
3d14c5d2 YS |
513 | } |
514 | EXPORT_SYMBOL(ceph_parse_options); | |
515 | ||
ff40f9ae ID |
516 | int ceph_print_client_options(struct seq_file *m, struct ceph_client *client) |
517 | { | |
518 | struct ceph_options *opt = client->options; | |
519 | size_t pos = m->count; | |
520 | ||
a068acf2 KC |
521 | if (opt->name) { |
522 | seq_puts(m, "name="); | |
523 | seq_escape(m, opt->name, ", \t\n\\"); | |
524 | seq_putc(m, ','); | |
525 | } | |
ff40f9ae ID |
526 | if (opt->key) |
527 | seq_puts(m, "secret=<hidden>,"); | |
528 | ||
529 | if (opt->flags & CEPH_OPT_FSID) | |
530 | seq_printf(m, "fsid=%pU,", &opt->fsid); | |
531 | if (opt->flags & CEPH_OPT_NOSHARE) | |
532 | seq_puts(m, "noshare,"); | |
533 | if (opt->flags & CEPH_OPT_NOCRC) | |
534 | seq_puts(m, "nocrc,"); | |
535 | if (opt->flags & CEPH_OPT_NOMSGAUTH) | |
536 | seq_puts(m, "nocephx_require_signatures,"); | |
537 | if ((opt->flags & CEPH_OPT_TCP_NODELAY) == 0) | |
538 | seq_puts(m, "notcp_nodelay,"); | |
539 | ||
540 | if (opt->mount_timeout != CEPH_MOUNT_TIMEOUT_DEFAULT) | |
a319bf56 ID |
541 | seq_printf(m, "mount_timeout=%d,", |
542 | jiffies_to_msecs(opt->mount_timeout) / 1000); | |
ff40f9ae | 543 | if (opt->osd_idle_ttl != CEPH_OSD_IDLE_TTL_DEFAULT) |
a319bf56 ID |
544 | seq_printf(m, "osd_idle_ttl=%d,", |
545 | jiffies_to_msecs(opt->osd_idle_ttl) / 1000); | |
ff40f9ae ID |
546 | if (opt->osd_keepalive_timeout != CEPH_OSD_KEEPALIVE_DEFAULT) |
547 | seq_printf(m, "osdkeepalivetimeout=%d,", | |
a319bf56 | 548 | jiffies_to_msecs(opt->osd_keepalive_timeout) / 1000); |
ff40f9ae ID |
549 | |
550 | /* drop redundant comma */ | |
551 | if (m->count != pos) | |
552 | m->count--; | |
553 | ||
554 | return 0; | |
555 | } | |
556 | EXPORT_SYMBOL(ceph_print_client_options); | |
557 | ||
3d14c5d2 YS |
558 | u64 ceph_client_id(struct ceph_client *client) |
559 | { | |
560 | return client->monc.auth->global_id; | |
561 | } | |
562 | EXPORT_SYMBOL(ceph_client_id); | |
563 | ||
564 | /* | |
565 | * create a fresh client instance | |
566 | */ | |
6ab00d46 | 567 | struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private, |
12b4629a ID |
568 | u64 supported_features, |
569 | u64 required_features) | |
3d14c5d2 YS |
570 | { |
571 | struct ceph_client *client; | |
6ab00d46 | 572 | struct ceph_entity_addr *myaddr = NULL; |
3d14c5d2 YS |
573 | int err = -ENOMEM; |
574 | ||
575 | client = kzalloc(sizeof(*client), GFP_KERNEL); | |
576 | if (client == NULL) | |
577 | return ERR_PTR(-ENOMEM); | |
578 | ||
579 | client->private = private; | |
580 | client->options = opt; | |
581 | ||
582 | mutex_init(&client->mount_mutex); | |
583 | init_waitqueue_head(&client->auth_wq); | |
584 | client->auth_err = 0; | |
585 | ||
a3fc9800 YZ |
586 | if (!ceph_test_opt(client, NOMSGAUTH)) |
587 | required_features |= CEPH_FEATURE_MSG_AUTH; | |
588 | ||
3d14c5d2 | 589 | client->extra_mon_dispatch = NULL; |
1fe60e51 | 590 | client->supported_features = CEPH_FEATURES_SUPPORTED_DEFAULT | |
6ab00d46 | 591 | supported_features; |
1fe60e51 | 592 | client->required_features = CEPH_FEATURES_REQUIRED_DEFAULT | |
6ab00d46 SW |
593 | required_features; |
594 | ||
595 | /* msgr */ | |
596 | if (ceph_test_opt(client, MYIP)) | |
597 | myaddr = &client->options->my_addr; | |
ba988f87 | 598 | |
15d9882c AE |
599 | ceph_messenger_init(&client->msgr, myaddr, |
600 | client->supported_features, | |
601 | client->required_features, | |
ba988f87 CH |
602 | ceph_test_opt(client, NOCRC), |
603 | ceph_test_opt(client, TCP_NODELAY)); | |
3d14c5d2 YS |
604 | |
605 | /* subsystems */ | |
606 | err = ceph_monc_init(&client->monc, client); | |
607 | if (err < 0) | |
15d9882c | 608 | goto fail; |
3d14c5d2 YS |
609 | err = ceph_osdc_init(&client->osdc, client); |
610 | if (err < 0) | |
611 | goto fail_monc; | |
612 | ||
613 | return client; | |
614 | ||
615 | fail_monc: | |
616 | ceph_monc_stop(&client->monc); | |
617 | fail: | |
757856d2 | 618 | ceph_messenger_fini(&client->msgr); |
3d14c5d2 YS |
619 | kfree(client); |
620 | return ERR_PTR(err); | |
621 | } | |
622 | EXPORT_SYMBOL(ceph_create_client); | |
623 | ||
624 | void ceph_destroy_client(struct ceph_client *client) | |
625 | { | |
626 | dout("destroy_client %p\n", client); | |
627 | ||
a2a32584 GH |
628 | atomic_set(&client->msgr.stopping, 1); |
629 | ||
3d14c5d2 YS |
630 | /* unmount */ |
631 | ceph_osdc_stop(&client->osdc); | |
3d14c5d2 | 632 | ceph_monc_stop(&client->monc); |
757856d2 | 633 | ceph_messenger_fini(&client->msgr); |
3d14c5d2 YS |
634 | |
635 | ceph_debugfs_client_cleanup(client); | |
636 | ||
3d14c5d2 YS |
637 | ceph_destroy_options(client->options); |
638 | ||
639 | kfree(client); | |
640 | dout("destroy_client %p done\n", client); | |
641 | } | |
642 | EXPORT_SYMBOL(ceph_destroy_client); | |
643 | ||
644 | /* | |
645 | * true if we have the mon map (and have thus joined the cluster) | |
646 | */ | |
647 | static int have_mon_and_osd_map(struct ceph_client *client) | |
648 | { | |
649 | return client->monc.monmap && client->monc.monmap->epoch && | |
650 | client->osdc.osdmap && client->osdc.osdmap->epoch; | |
651 | } | |
652 | ||
653 | /* | |
654 | * mount: join the ceph cluster, and open root directory. | |
655 | */ | |
656 | int __ceph_open_session(struct ceph_client *client, unsigned long started) | |
657 | { | |
a319bf56 | 658 | unsigned long timeout = client->options->mount_timeout; |
216639dd | 659 | long err; |
3d14c5d2 | 660 | |
3d14c5d2 YS |
661 | /* open session, and wait for mon and osd maps */ |
662 | err = ceph_monc_open_session(&client->monc); | |
663 | if (err < 0) | |
664 | return err; | |
665 | ||
666 | while (!have_mon_and_osd_map(client)) { | |
3d14c5d2 | 667 | if (timeout && time_after_eq(jiffies, started + timeout)) |
216639dd | 668 | return -ETIMEDOUT; |
3d14c5d2 YS |
669 | |
670 | /* wait */ | |
671 | dout("mount waiting for mon_map\n"); | |
672 | err = wait_event_interruptible_timeout(client->auth_wq, | |
673 | have_mon_and_osd_map(client) || (client->auth_err < 0), | |
a319bf56 | 674 | ceph_timeout_jiffies(timeout)); |
216639dd | 675 | if (err < 0) |
3d14c5d2 YS |
676 | return err; |
677 | if (client->auth_err < 0) | |
678 | return client->auth_err; | |
679 | } | |
680 | ||
681 | return 0; | |
682 | } | |
683 | EXPORT_SYMBOL(__ceph_open_session); | |
684 | ||
685 | ||
686 | int ceph_open_session(struct ceph_client *client) | |
687 | { | |
688 | int ret; | |
689 | unsigned long started = jiffies; /* note the start time */ | |
690 | ||
691 | dout("open_session start\n"); | |
692 | mutex_lock(&client->mount_mutex); | |
693 | ||
694 | ret = __ceph_open_session(client, started); | |
695 | ||
696 | mutex_unlock(&client->mount_mutex); | |
697 | return ret; | |
698 | } | |
699 | EXPORT_SYMBOL(ceph_open_session); | |
700 | ||
701 | ||
702 | static int __init init_ceph_lib(void) | |
703 | { | |
704 | int ret = 0; | |
705 | ||
706 | ret = ceph_debugfs_init(); | |
707 | if (ret < 0) | |
708 | goto out; | |
709 | ||
4b2a58ab | 710 | ret = ceph_crypto_init(); |
3d14c5d2 YS |
711 | if (ret < 0) |
712 | goto out_debugfs; | |
713 | ||
4b2a58ab TV |
714 | ret = ceph_msgr_init(); |
715 | if (ret < 0) | |
716 | goto out_crypto; | |
717 | ||
5522ae0b AE |
718 | ret = ceph_osdc_setup(); |
719 | if (ret < 0) | |
720 | goto out_msgr; | |
721 | ||
4f6a7e5e SW |
722 | pr_info("loaded (mon/osd proto %d/%d)\n", |
723 | CEPH_MONC_PROTOCOL, CEPH_OSDC_PROTOCOL); | |
3d14c5d2 YS |
724 | |
725 | return 0; | |
726 | ||
5522ae0b AE |
727 | out_msgr: |
728 | ceph_msgr_exit(); | |
4b2a58ab TV |
729 | out_crypto: |
730 | ceph_crypto_shutdown(); | |
3d14c5d2 YS |
731 | out_debugfs: |
732 | ceph_debugfs_cleanup(); | |
733 | out: | |
734 | return ret; | |
735 | } | |
736 | ||
737 | static void __exit exit_ceph_lib(void) | |
738 | { | |
739 | dout("exit_ceph_lib\n"); | |
5522ae0b | 740 | ceph_osdc_cleanup(); |
3d14c5d2 | 741 | ceph_msgr_exit(); |
4b2a58ab | 742 | ceph_crypto_shutdown(); |
3d14c5d2 YS |
743 | ceph_debugfs_cleanup(); |
744 | } | |
745 | ||
746 | module_init(init_ceph_lib); | |
747 | module_exit(exit_ceph_lib); | |
748 | ||
749 | MODULE_AUTHOR("Sage Weil <sage@newdream.net>"); | |
750 | MODULE_AUTHOR("Yehuda Sadeh <yehuda@hq.newdream.net>"); | |
751 | MODULE_AUTHOR("Patience Warnick <patience@newdream.net>"); | |
6c13a6bb | 752 | MODULE_DESCRIPTION("Ceph core library"); |
3d14c5d2 | 753 | MODULE_LICENSE("GPL"); |