blob: 55d2bfee16d798f6f01ae44c1052e824e590a0d8 [file] [log] [blame]
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -07001
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>
Tommi Virtanene2c3d292011-03-25 16:40:48 -07008#include <linux/key.h>
Tommi Virtanen4b2a58a2011-03-28 14:59:38 -07009#include <keys/ceph-type.h>
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070010#include <linux/module.h>
11#include <linux/mount.h>
Ilya Dryomov757856d2015-06-25 17:47:45 +030012#include <linux/nsproxy.h>
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070013#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>
Ilya Dryomoveeb0bed2014-01-09 20:08:21 +020019#include <linux/vmalloc.h>
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070020
21
Sage Weil1fe60e52012-07-30 16:23:22 -070022#include <linux/ceph/ceph_features.h>
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070023#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>
Tommi Virtanen8323c3a2011-03-25 16:32:57 -070028#include "crypto.h"
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070029
30
Alex Elder72fe25e2013-01-30 11:13:33 -060031/*
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 */
42bool libceph_compatible(void *data)
43{
Alex Elder1e32d342013-01-30 11:13:33 -060044 return true;
Alex Elder72fe25e2013-01-30 11:13:33 -060045}
46EXPORT_SYMBOL(libceph_compatible);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070047
48/*
49 * find filename portion of a path (/foo/bar/baz -> baz)
50 */
51const 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}
59EXPORT_SYMBOL(ceph_file_part);
60
61const 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";
Ilya Dryomov513a8242014-05-13 11:19:26 +040074 case CEPH_MSG_MON_GET_VERSION: return "mon_get_version";
75 case CEPH_MSG_MON_GET_VERSION_REPLY: return "mon_get_version_reply";
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070076 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";
Yehuda Sadeha40c4f12011-03-21 15:07:16 -070089 case CEPH_MSG_WATCH_NOTIFY: return "watch_notify";
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070090 default: return "unknown";
91 }
92}
93EXPORT_SYMBOL(ceph_msg_type_name);
94
95/*
96 * Initially learn our fsid, or verify an fsid matches.
97 */
98int 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 {
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700107 memcpy(&client->fsid, fsid, sizeof(*fsid));
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700108 }
109 return 0;
110}
111EXPORT_SYMBOL(ceph_check_fsid);
112
113static 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
124int 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
Ilya Dryomov757856d2015-06-25 17:47:45 +0300133 /*
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
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700140 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
Tommi Virtanen8323c3a2011-03-25 16:32:57 -0700148 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 }
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700171
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}
180EXPORT_SYMBOL(ceph_compare_options);
181
Ilya Dryomoveeb0bed2014-01-09 20:08:21 +0200182void *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
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700193
194static 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 */
228enum {
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,
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700238 Opt_key,
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700239 Opt_ip,
240 Opt_last_string,
241 /* string args above */
Alex Eldercffaba12012-02-15 07:43:54 -0600242 Opt_share,
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700243 Opt_noshare,
Alex Eldercffaba12012-02-15 07:43:54 -0600244 Opt_crc,
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700245 Opt_nocrc,
Yan, Zhenga3fc9802014-11-11 16:30:55 +0800246 Opt_cephx_require_signatures,
247 Opt_nocephx_require_signatures,
Ilya Dryomova51983e2015-10-28 23:52:06 +0100248 Opt_cephx_sign_messages,
249 Opt_nocephx_sign_messages,
Chaitanya Huilgolba988f82015-01-23 16:41:25 +0530250 Opt_tcp_nodelay,
251 Opt_notcp_nodelay,
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700252};
253
254static 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 /* int args above */
260 {Opt_fsid, "fsid=%s"},
261 {Opt_name, "name=%s"},
262 {Opt_secret, "secret=%s"},
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700263 {Opt_key, "key=%s"},
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700264 {Opt_ip, "ip=%s"},
265 /* string args above */
Alex Eldercffaba12012-02-15 07:43:54 -0600266 {Opt_share, "share"},
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700267 {Opt_noshare, "noshare"},
Alex Eldercffaba12012-02-15 07:43:54 -0600268 {Opt_crc, "crc"},
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700269 {Opt_nocrc, "nocrc"},
Yan, Zhenga3fc9802014-11-11 16:30:55 +0800270 {Opt_cephx_require_signatures, "cephx_require_signatures"},
271 {Opt_nocephx_require_signatures, "nocephx_require_signatures"},
Ilya Dryomova51983e2015-10-28 23:52:06 +0100272 {Opt_cephx_sign_messages, "cephx_sign_messages"},
273 {Opt_nocephx_sign_messages, "nocephx_sign_messages"},
Chaitanya Huilgolba988f82015-01-23 16:41:25 +0530274 {Opt_tcp_nodelay, "tcp_nodelay"},
275 {Opt_notcp_nodelay, "notcp_nodelay"},
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700276 {-1, NULL}
277};
278
279void ceph_destroy_options(struct ceph_options *opt)
280{
281 dout("destroy_options %p\n", opt);
282 kfree(opt->name);
Tommi Virtanen8323c3a2011-03-25 16:32:57 -0700283 if (opt->key) {
284 ceph_crypto_key_destroy(opt->key);
285 kfree(opt->key);
286 }
Noah Watkins1cad7892011-09-12 14:51:53 -0700287 kfree(opt->mon_addr);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700288 kfree(opt);
289}
290EXPORT_SYMBOL(ceph_destroy_options);
291
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700292/* get secret from key store */
293static int get_secret(struct ceph_crypto_key *dst, const char *name) {
294 struct key *ukey;
295 int key_err;
296 int err = 0;
Tommi Virtanen4b2a58a2011-03-28 14:59:38 -0700297 struct ceph_crypto_key *ckey;
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700298
Tommi Virtanen4b2a58a2011-03-28 14:59:38 -0700299 ukey = request_key(&key_type_ceph, name, NULL);
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700300 if (!ukey || IS_ERR(ukey)) {
301 /* request_key errors don't map nicely to mount(2)
302 errors; don't even try, but still printk */
303 key_err = PTR_ERR(ukey);
304 switch (key_err) {
305 case -ENOKEY:
Joe Perchesb9a67892014-09-09 21:17:29 -0700306 pr_warn("ceph: Mount failed due to key not found: %s\n",
307 name);
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700308 break;
309 case -EKEYEXPIRED:
Joe Perchesb9a67892014-09-09 21:17:29 -0700310 pr_warn("ceph: Mount failed due to expired key: %s\n",
311 name);
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700312 break;
313 case -EKEYREVOKED:
Joe Perchesb9a67892014-09-09 21:17:29 -0700314 pr_warn("ceph: Mount failed due to revoked key: %s\n",
315 name);
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700316 break;
317 default:
Joe Perchesb9a67892014-09-09 21:17:29 -0700318 pr_warn("ceph: Mount failed due to unknown key error %d: %s\n",
319 key_err, name);
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700320 }
321 err = -EPERM;
322 goto out;
323 }
324
David Howells146aa8b2015-10-21 14:04:48 +0100325 ckey = ukey->payload.data[0];
Tommi Virtanen4b2a58a2011-03-28 14:59:38 -0700326 err = ceph_crypto_key_clone(dst, ckey);
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700327 if (err)
328 goto out_key;
329 /* pass through, err is 0 */
330
331out_key:
332 key_put(ukey);
333out:
334 return err;
335}
336
Alex Elderee577412012-01-24 10:08:36 -0600337struct ceph_options *
338ceph_parse_options(char *options, const char *dev_name,
339 const char *dev_name_end,
340 int (*parse_extra_token)(char *c, void *private),
341 void *private)
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700342{
343 struct ceph_options *opt;
344 const char *c;
345 int err = -ENOMEM;
346 substring_t argstr[MAX_OPT_ARGS];
347
348 opt = kzalloc(sizeof(*opt), GFP_KERNEL);
349 if (!opt)
Alex Elderee577412012-01-24 10:08:36 -0600350 return ERR_PTR(-ENOMEM);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700351 opt->mon_addr = kcalloc(CEPH_MAX_MON, sizeof(*opt->mon_addr),
352 GFP_KERNEL);
353 if (!opt->mon_addr)
354 goto out;
355
356 dout("parse_options %p options '%s' dev_name '%s'\n", opt, options,
357 dev_name);
358
359 /* start with defaults */
360 opt->flags = CEPH_OPT_DEFAULT;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700361 opt->osd_keepalive_timeout = CEPH_OSD_KEEPALIVE_DEFAULT;
Ilya Dryomova319bf52015-05-15 12:02:17 +0300362 opt->mount_timeout = CEPH_MOUNT_TIMEOUT_DEFAULT;
363 opt->osd_idle_ttl = CEPH_OSD_IDLE_TTL_DEFAULT;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700364
365 /* get mon ip(s) */
366 /* ip1[:port1][,ip2[:port2]...] */
367 err = ceph_parse_ips(dev_name, dev_name_end, opt->mon_addr,
368 CEPH_MAX_MON, &opt->num_mon);
369 if (err < 0)
370 goto out;
371
372 /* parse mount options */
373 while ((c = strsep(&options, ",")) != NULL) {
374 int token, intval, ret;
375 if (!*c)
376 continue;
377 err = -EINVAL;
378 token = match_token((char *)c, opt_tokens, argstr);
Yehuda Sadeh010e3b42010-09-30 11:58:31 -0700379 if (token < 0 && parse_extra_token) {
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700380 /* extra? */
381 err = parse_extra_token((char *)c, private);
382 if (err < 0) {
383 pr_err("bad option at '%s'\n", c);
384 goto out;
385 }
386 continue;
387 }
388 if (token < Opt_last_int) {
389 ret = match_int(&argstr[0], &intval);
390 if (ret < 0) {
391 pr_err("bad mount option arg (not int) "
392 "at '%s'\n", c);
393 continue;
394 }
395 dout("got int token %d val %d\n", token, intval);
396 } else if (token > Opt_last_int && token < Opt_last_string) {
397 dout("got string token %d val %s\n", token,
398 argstr[0].from);
399 } else {
400 dout("got token %d\n", token);
401 }
402 switch (token) {
403 case Opt_ip:
404 err = ceph_parse_ips(argstr[0].from,
405 argstr[0].to,
406 &opt->my_addr,
407 1, NULL);
408 if (err < 0)
409 goto out;
410 opt->flags |= CEPH_OPT_MYIP;
411 break;
412
413 case Opt_fsid:
414 err = parse_fsid(argstr[0].from, &opt->fsid);
415 if (err == 0)
416 opt->flags |= CEPH_OPT_FSID;
417 break;
418 case Opt_name:
419 opt->name = kstrndup(argstr[0].from,
420 argstr[0].to-argstr[0].from,
421 GFP_KERNEL);
422 break;
423 case Opt_secret:
Tommi Virtanen8323c3a2011-03-25 16:32:57 -0700424 opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL);
425 if (!opt->key) {
426 err = -ENOMEM;
427 goto out;
428 }
429 err = ceph_crypto_key_unarmor(opt->key, argstr[0].from);
430 if (err < 0)
431 goto out;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700432 break;
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700433 case Opt_key:
434 opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL);
435 if (!opt->key) {
436 err = -ENOMEM;
437 goto out;
438 }
439 err = get_secret(opt->key, argstr[0].from);
440 if (err < 0)
441 goto out;
442 break;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700443
444 /* misc */
445 case Opt_osdtimeout:
Joe Perchesb9a67892014-09-09 21:17:29 -0700446 pr_warn("ignoring deprecated osdtimeout option\n");
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700447 break;
448 case Opt_osdkeepalivetimeout:
Ilya Dryomova319bf52015-05-15 12:02:17 +0300449 /* 0 isn't well defined right now, reject it */
450 if (intval < 1 || intval > INT_MAX / 1000) {
451 pr_err("osdkeepalive out of range\n");
452 err = -EINVAL;
453 goto out;
454 }
455 opt->osd_keepalive_timeout =
456 msecs_to_jiffies(intval * 1000);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700457 break;
458 case Opt_osd_idle_ttl:
Ilya Dryomova319bf52015-05-15 12:02:17 +0300459 /* 0 isn't well defined right now, reject it */
460 if (intval < 1 || intval > INT_MAX / 1000) {
461 pr_err("osd_idle_ttl out of range\n");
462 err = -EINVAL;
463 goto out;
464 }
465 opt->osd_idle_ttl = msecs_to_jiffies(intval * 1000);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700466 break;
467 case Opt_mount_timeout:
Ilya Dryomova319bf52015-05-15 12:02:17 +0300468 /* 0 is "wait forever" (i.e. infinite timeout) */
469 if (intval < 0 || intval > INT_MAX / 1000) {
470 pr_err("mount_timeout out of range\n");
471 err = -EINVAL;
472 goto out;
473 }
474 opt->mount_timeout = msecs_to_jiffies(intval * 1000);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700475 break;
476
Alex Eldercffaba12012-02-15 07:43:54 -0600477 case Opt_share:
478 opt->flags &= ~CEPH_OPT_NOSHARE;
479 break;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700480 case Opt_noshare:
481 opt->flags |= CEPH_OPT_NOSHARE;
482 break;
483
Alex Eldercffaba12012-02-15 07:43:54 -0600484 case Opt_crc:
485 opt->flags &= ~CEPH_OPT_NOCRC;
486 break;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700487 case Opt_nocrc:
488 opt->flags |= CEPH_OPT_NOCRC;
489 break;
Chaitanya Huilgolba988f82015-01-23 16:41:25 +0530490
Yan, Zhenga3fc9802014-11-11 16:30:55 +0800491 case Opt_cephx_require_signatures:
492 opt->flags &= ~CEPH_OPT_NOMSGAUTH;
493 break;
494 case Opt_nocephx_require_signatures:
495 opt->flags |= CEPH_OPT_NOMSGAUTH;
496 break;
Ilya Dryomova51983e2015-10-28 23:52:06 +0100497 case Opt_cephx_sign_messages:
498 opt->flags &= ~CEPH_OPT_NOMSGSIGN;
499 break;
500 case Opt_nocephx_sign_messages:
501 opt->flags |= CEPH_OPT_NOMSGSIGN;
502 break;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700503
Chaitanya Huilgolba988f82015-01-23 16:41:25 +0530504 case Opt_tcp_nodelay:
505 opt->flags |= CEPH_OPT_TCP_NODELAY;
506 break;
507 case Opt_notcp_nodelay:
508 opt->flags &= ~CEPH_OPT_TCP_NODELAY;
509 break;
510
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700511 default:
512 BUG_ON(token);
513 }
514 }
515
516 /* success */
Alex Elderee577412012-01-24 10:08:36 -0600517 return opt;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700518
519out:
520 ceph_destroy_options(opt);
Alex Elderee577412012-01-24 10:08:36 -0600521 return ERR_PTR(err);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700522}
523EXPORT_SYMBOL(ceph_parse_options);
524
Ilya Dryomovff40f9a2015-03-25 21:02:16 +0300525int ceph_print_client_options(struct seq_file *m, struct ceph_client *client)
526{
527 struct ceph_options *opt = client->options;
528 size_t pos = m->count;
529
Kees Cooka068acf2015-09-04 15:44:57 -0700530 if (opt->name) {
531 seq_puts(m, "name=");
532 seq_escape(m, opt->name, ", \t\n\\");
533 seq_putc(m, ',');
534 }
Ilya Dryomovff40f9a2015-03-25 21:02:16 +0300535 if (opt->key)
536 seq_puts(m, "secret=<hidden>,");
537
538 if (opt->flags & CEPH_OPT_FSID)
539 seq_printf(m, "fsid=%pU,", &opt->fsid);
540 if (opt->flags & CEPH_OPT_NOSHARE)
541 seq_puts(m, "noshare,");
542 if (opt->flags & CEPH_OPT_NOCRC)
543 seq_puts(m, "nocrc,");
544 if (opt->flags & CEPH_OPT_NOMSGAUTH)
545 seq_puts(m, "nocephx_require_signatures,");
Ilya Dryomova51983e2015-10-28 23:52:06 +0100546 if (opt->flags & CEPH_OPT_NOMSGSIGN)
547 seq_puts(m, "nocephx_sign_messages,");
Ilya Dryomovff40f9a2015-03-25 21:02:16 +0300548 if ((opt->flags & CEPH_OPT_TCP_NODELAY) == 0)
549 seq_puts(m, "notcp_nodelay,");
550
551 if (opt->mount_timeout != CEPH_MOUNT_TIMEOUT_DEFAULT)
Ilya Dryomova319bf52015-05-15 12:02:17 +0300552 seq_printf(m, "mount_timeout=%d,",
553 jiffies_to_msecs(opt->mount_timeout) / 1000);
Ilya Dryomovff40f9a2015-03-25 21:02:16 +0300554 if (opt->osd_idle_ttl != CEPH_OSD_IDLE_TTL_DEFAULT)
Ilya Dryomova319bf52015-05-15 12:02:17 +0300555 seq_printf(m, "osd_idle_ttl=%d,",
556 jiffies_to_msecs(opt->osd_idle_ttl) / 1000);
Ilya Dryomovff40f9a2015-03-25 21:02:16 +0300557 if (opt->osd_keepalive_timeout != CEPH_OSD_KEEPALIVE_DEFAULT)
558 seq_printf(m, "osdkeepalivetimeout=%d,",
Ilya Dryomova319bf52015-05-15 12:02:17 +0300559 jiffies_to_msecs(opt->osd_keepalive_timeout) / 1000);
Ilya Dryomovff40f9a2015-03-25 21:02:16 +0300560
561 /* drop redundant comma */
562 if (m->count != pos)
563 m->count--;
564
565 return 0;
566}
567EXPORT_SYMBOL(ceph_print_client_options);
568
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700569u64 ceph_client_id(struct ceph_client *client)
570{
571 return client->monc.auth->global_id;
572}
573EXPORT_SYMBOL(ceph_client_id);
574
575/*
576 * create a fresh client instance
577 */
Sage Weil6ab00d42011-08-09 09:41:59 -0700578struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private,
Ilya Dryomov12b46292013-12-24 21:19:23 +0200579 u64 supported_features,
580 u64 required_features)
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700581{
582 struct ceph_client *client;
Sage Weil6ab00d42011-08-09 09:41:59 -0700583 struct ceph_entity_addr *myaddr = NULL;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700584 int err = -ENOMEM;
585
586 client = kzalloc(sizeof(*client), GFP_KERNEL);
587 if (client == NULL)
588 return ERR_PTR(-ENOMEM);
589
590 client->private = private;
591 client->options = opt;
592
593 mutex_init(&client->mount_mutex);
594 init_waitqueue_head(&client->auth_wq);
595 client->auth_err = 0;
596
Yan, Zhenga3fc9802014-11-11 16:30:55 +0800597 if (!ceph_test_opt(client, NOMSGAUTH))
598 required_features |= CEPH_FEATURE_MSG_AUTH;
599
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700600 client->extra_mon_dispatch = NULL;
Sage Weil1fe60e52012-07-30 16:23:22 -0700601 client->supported_features = CEPH_FEATURES_SUPPORTED_DEFAULT |
Sage Weil6ab00d42011-08-09 09:41:59 -0700602 supported_features;
Sage Weil1fe60e52012-07-30 16:23:22 -0700603 client->required_features = CEPH_FEATURES_REQUIRED_DEFAULT |
Sage Weil6ab00d42011-08-09 09:41:59 -0700604 required_features;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700605
Sage Weil6ab00d42011-08-09 09:41:59 -0700606 /* msgr */
607 if (ceph_test_opt(client, MYIP))
608 myaddr = &client->options->my_addr;
Chaitanya Huilgolba988f82015-01-23 16:41:25 +0530609
Ilya Dryomov859bff52015-10-28 23:50:58 +0100610 ceph_messenger_init(&client->msgr, myaddr);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700611
612 /* subsystems */
613 err = ceph_monc_init(&client->monc, client);
614 if (err < 0)
Alex Elder15d98822012-05-26 23:26:43 -0500615 goto fail;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700616 err = ceph_osdc_init(&client->osdc, client);
617 if (err < 0)
618 goto fail_monc;
619
620 return client;
621
622fail_monc:
623 ceph_monc_stop(&client->monc);
624fail:
Ilya Dryomov757856d2015-06-25 17:47:45 +0300625 ceph_messenger_fini(&client->msgr);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700626 kfree(client);
627 return ERR_PTR(err);
628}
629EXPORT_SYMBOL(ceph_create_client);
630
631void ceph_destroy_client(struct ceph_client *client)
632{
633 dout("destroy_client %p\n", client);
634
Guanjun Hea2a32582012-07-08 19:50:33 -0700635 atomic_set(&client->msgr.stopping, 1);
636
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700637 /* unmount */
638 ceph_osdc_stop(&client->osdc);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700639 ceph_monc_stop(&client->monc);
Ilya Dryomov757856d2015-06-25 17:47:45 +0300640 ceph_messenger_fini(&client->msgr);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700641
642 ceph_debugfs_client_cleanup(client);
643
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700644 ceph_destroy_options(client->options);
645
646 kfree(client);
647 dout("destroy_client %p done\n", client);
648}
649EXPORT_SYMBOL(ceph_destroy_client);
650
651/*
652 * true if we have the mon map (and have thus joined the cluster)
653 */
Zhang Zhuoyu3b33f692016-03-25 05:18:39 -0400654static bool have_mon_and_osd_map(struct ceph_client *client)
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700655{
656 return client->monc.monmap && client->monc.monmap->epoch &&
657 client->osdc.osdmap && client->osdc.osdmap->epoch;
658}
659
660/*
661 * mount: join the ceph cluster, and open root directory.
662 */
663int __ceph_open_session(struct ceph_client *client, unsigned long started)
664{
Ilya Dryomova319bf52015-05-15 12:02:17 +0300665 unsigned long timeout = client->options->mount_timeout;
Ilya Dryomov216639d2015-05-19 12:03:33 +0300666 long err;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700667
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700668 /* open session, and wait for mon and osd maps */
669 err = ceph_monc_open_session(&client->monc);
670 if (err < 0)
671 return err;
672
673 while (!have_mon_and_osd_map(client)) {
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700674 if (timeout && time_after_eq(jiffies, started + timeout))
Ilya Dryomov216639d2015-05-19 12:03:33 +0300675 return -ETIMEDOUT;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700676
677 /* wait */
678 dout("mount waiting for mon_map\n");
679 err = wait_event_interruptible_timeout(client->auth_wq,
680 have_mon_and_osd_map(client) || (client->auth_err < 0),
Ilya Dryomova319bf52015-05-15 12:02:17 +0300681 ceph_timeout_jiffies(timeout));
Ilya Dryomov216639d2015-05-19 12:03:33 +0300682 if (err < 0)
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700683 return err;
684 if (client->auth_err < 0)
685 return client->auth_err;
686 }
687
Ilya Dryomov02ac9562016-01-06 12:56:21 +0300688 pr_info("client%llu fsid %pU\n", ceph_client_id(client), &client->fsid);
689 ceph_debugfs_client_init(client);
690
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700691 return 0;
692}
693EXPORT_SYMBOL(__ceph_open_session);
694
695
696int ceph_open_session(struct ceph_client *client)
697{
698 int ret;
699 unsigned long started = jiffies; /* note the start time */
700
701 dout("open_session start\n");
702 mutex_lock(&client->mount_mutex);
703
704 ret = __ceph_open_session(client, started);
705
706 mutex_unlock(&client->mount_mutex);
707 return ret;
708}
709EXPORT_SYMBOL(ceph_open_session);
710
711
712static int __init init_ceph_lib(void)
713{
714 int ret = 0;
715
716 ret = ceph_debugfs_init();
717 if (ret < 0)
718 goto out;
719
Tommi Virtanen4b2a58a2011-03-28 14:59:38 -0700720 ret = ceph_crypto_init();
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700721 if (ret < 0)
722 goto out_debugfs;
723
Tommi Virtanen4b2a58a2011-03-28 14:59:38 -0700724 ret = ceph_msgr_init();
725 if (ret < 0)
726 goto out_crypto;
727
Alex Elder5522ae02013-05-01 12:43:04 -0500728 ret = ceph_osdc_setup();
729 if (ret < 0)
730 goto out_msgr;
731
Sage Weil4f6a7e52013-02-23 10:41:09 -0800732 pr_info("loaded (mon/osd proto %d/%d)\n",
733 CEPH_MONC_PROTOCOL, CEPH_OSDC_PROTOCOL);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700734
735 return 0;
736
Alex Elder5522ae02013-05-01 12:43:04 -0500737out_msgr:
738 ceph_msgr_exit();
Tommi Virtanen4b2a58a2011-03-28 14:59:38 -0700739out_crypto:
740 ceph_crypto_shutdown();
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700741out_debugfs:
742 ceph_debugfs_cleanup();
743out:
744 return ret;
745}
746
747static void __exit exit_ceph_lib(void)
748{
749 dout("exit_ceph_lib\n");
Alex Elder5522ae02013-05-01 12:43:04 -0500750 ceph_osdc_cleanup();
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700751 ceph_msgr_exit();
Tommi Virtanen4b2a58a2011-03-28 14:59:38 -0700752 ceph_crypto_shutdown();
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700753 ceph_debugfs_cleanup();
754}
755
756module_init(init_ceph_lib);
757module_exit(exit_ceph_lib);
758
759MODULE_AUTHOR("Sage Weil <sage@newdream.net>");
760MODULE_AUTHOR("Yehuda Sadeh <yehuda@hq.newdream.net>");
761MODULE_AUTHOR("Patience Warnick <patience@newdream.net>");
Hong Zhiguo6c13a6b2015-06-10 21:13:25 +0800762MODULE_DESCRIPTION("Ceph core library");
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700763MODULE_LICENSE("GPL");