blob: 4fd02831beed20fb3d98475c7da2a0b4f2818513 [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
Ilya Dryomovd6a34082017-03-03 18:16:07 +010048static 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}
53static const struct kernel_param_ops param_ops_supported_features = {
54 .get = param_get_supported_features,
55};
56module_param_cb(supported_features, &param_ops_supported_features, NULL,
57 S_IRUGO);
58
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070059/*
60 * find filename portion of a path (/foo/bar/baz -> baz)
61 */
62const char *ceph_file_part(const char *s, int len)
63{
64 const char *e = s + len;
65
66 while (e != s && *(e-1) != '/')
67 e--;
68 return e;
69}
70EXPORT_SYMBOL(ceph_file_part);
71
72const char *ceph_msg_type_name(int type)
73{
74 switch (type) {
75 case CEPH_MSG_SHUTDOWN: return "shutdown";
76 case CEPH_MSG_PING: return "ping";
77 case CEPH_MSG_AUTH: return "auth";
78 case CEPH_MSG_AUTH_REPLY: return "auth_reply";
79 case CEPH_MSG_MON_MAP: return "mon_map";
80 case CEPH_MSG_MON_GET_MAP: return "mon_get_map";
81 case CEPH_MSG_MON_SUBSCRIBE: return "mon_subscribe";
82 case CEPH_MSG_MON_SUBSCRIBE_ACK: return "mon_subscribe_ack";
83 case CEPH_MSG_STATFS: return "statfs";
84 case CEPH_MSG_STATFS_REPLY: return "statfs_reply";
Ilya Dryomov513a8242014-05-13 11:19:26 +040085 case CEPH_MSG_MON_GET_VERSION: return "mon_get_version";
86 case CEPH_MSG_MON_GET_VERSION_REPLY: return "mon_get_version_reply";
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -070087 case CEPH_MSG_MDS_MAP: return "mds_map";
88 case CEPH_MSG_CLIENT_SESSION: return "client_session";
89 case CEPH_MSG_CLIENT_RECONNECT: return "client_reconnect";
90 case CEPH_MSG_CLIENT_REQUEST: return "client_request";
91 case CEPH_MSG_CLIENT_REQUEST_FORWARD: return "client_request_forward";
92 case CEPH_MSG_CLIENT_REPLY: return "client_reply";
93 case CEPH_MSG_CLIENT_CAPS: return "client_caps";
94 case CEPH_MSG_CLIENT_CAPRELEASE: return "client_cap_release";
95 case CEPH_MSG_CLIENT_SNAP: return "client_snap";
96 case CEPH_MSG_CLIENT_LEASE: return "client_lease";
97 case CEPH_MSG_OSD_MAP: return "osd_map";
98 case CEPH_MSG_OSD_OP: return "osd_op";
99 case CEPH_MSG_OSD_OPREPLY: return "osd_opreply";
Yehuda Sadeha40c4f12011-03-21 15:07:16 -0700100 case CEPH_MSG_WATCH_NOTIFY: return "watch_notify";
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700101 default: return "unknown";
102 }
103}
104EXPORT_SYMBOL(ceph_msg_type_name);
105
106/*
107 * Initially learn our fsid, or verify an fsid matches.
108 */
109int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid)
110{
111 if (client->have_fsid) {
112 if (ceph_fsid_compare(&client->fsid, fsid)) {
113 pr_err("bad fsid, had %pU got %pU",
114 &client->fsid, fsid);
115 return -1;
116 }
117 } else {
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700118 memcpy(&client->fsid, fsid, sizeof(*fsid));
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700119 }
120 return 0;
121}
122EXPORT_SYMBOL(ceph_check_fsid);
123
124static int strcmp_null(const char *s1, const char *s2)
125{
126 if (!s1 && !s2)
127 return 0;
128 if (s1 && !s2)
129 return -1;
130 if (!s1 && s2)
131 return 1;
132 return strcmp(s1, s2);
133}
134
135int ceph_compare_options(struct ceph_options *new_opt,
136 struct ceph_client *client)
137{
138 struct ceph_options *opt1 = new_opt;
139 struct ceph_options *opt2 = client->options;
140 int ofs = offsetof(struct ceph_options, mon_addr);
141 int i;
142 int ret;
143
Ilya Dryomov757856d2015-06-25 17:47:45 +0300144 /*
145 * Don't bother comparing options if network namespaces don't
146 * match.
147 */
148 if (!net_eq(current->nsproxy->net_ns, read_pnet(&client->msgr.net)))
149 return -1;
150
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700151 ret = memcmp(opt1, opt2, ofs);
152 if (ret)
153 return ret;
154
155 ret = strcmp_null(opt1->name, opt2->name);
156 if (ret)
157 return ret;
158
Tommi Virtanen8323c3a2011-03-25 16:32:57 -0700159 if (opt1->key && !opt2->key)
160 return -1;
161 if (!opt1->key && opt2->key)
162 return 1;
163 if (opt1->key && opt2->key) {
164 if (opt1->key->type != opt2->key->type)
165 return -1;
166 if (opt1->key->created.tv_sec != opt2->key->created.tv_sec)
167 return -1;
168 if (opt1->key->created.tv_nsec != opt2->key->created.tv_nsec)
169 return -1;
170 if (opt1->key->len != opt2->key->len)
171 return -1;
172 if (opt1->key->key && !opt2->key->key)
173 return -1;
174 if (!opt1->key->key && opt2->key->key)
175 return 1;
176 if (opt1->key->key && opt2->key->key) {
177 ret = memcmp(opt1->key->key, opt2->key->key, opt1->key->len);
178 if (ret)
179 return ret;
180 }
181 }
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700182
183 /* any matching mon ip implies a match */
184 for (i = 0; i < opt1->num_mon; i++) {
185 if (ceph_monmap_contains(client->monc.monmap,
186 &opt1->mon_addr[i]))
187 return 0;
188 }
189 return -1;
190}
191EXPORT_SYMBOL(ceph_compare_options);
192
Ilya Dryomoveeb0bed2014-01-09 20:08:21 +0200193void *ceph_kvmalloc(size_t size, gfp_t flags)
194{
195 if (size <= (PAGE_SIZE << PAGE_ALLOC_COSTLY_ORDER)) {
196 void *ptr = kmalloc(size, flags | __GFP_NOWARN);
197 if (ptr)
198 return ptr;
199 }
200
Michal Hocko19809c22017-05-08 15:57:44 -0700201 return __vmalloc(size, flags, PAGE_KERNEL);
Ilya Dryomoveeb0bed2014-01-09 20:08:21 +0200202}
203
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700204
205static int parse_fsid(const char *str, struct ceph_fsid *fsid)
206{
207 int i = 0;
208 char tmp[3];
209 int err = -EINVAL;
210 int d;
211
212 dout("parse_fsid '%s'\n", str);
213 tmp[2] = 0;
214 while (*str && i < 16) {
215 if (ispunct(*str)) {
216 str++;
217 continue;
218 }
219 if (!isxdigit(str[0]) || !isxdigit(str[1]))
220 break;
221 tmp[0] = str[0];
222 tmp[1] = str[1];
223 if (sscanf(tmp, "%x", &d) < 1)
224 break;
225 fsid->fsid[i] = d & 0xff;
226 i++;
227 str += 2;
228 }
229
230 if (i == 16)
231 err = 0;
232 dout("parse_fsid ret %d got fsid %pU", err, fsid);
233 return err;
234}
235
236/*
237 * ceph options
238 */
239enum {
240 Opt_osdtimeout,
241 Opt_osdkeepalivetimeout,
242 Opt_mount_timeout,
243 Opt_osd_idle_ttl,
Ilya Dryomov7cc5e382017-02-12 17:11:07 +0100244 Opt_osd_request_timeout,
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700245 Opt_last_int,
246 /* int args above */
247 Opt_fsid,
248 Opt_name,
249 Opt_secret,
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700250 Opt_key,
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700251 Opt_ip,
252 Opt_last_string,
253 /* string args above */
Alex Eldercffaba12012-02-15 07:43:54 -0600254 Opt_share,
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700255 Opt_noshare,
Alex Eldercffaba12012-02-15 07:43:54 -0600256 Opt_crc,
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700257 Opt_nocrc,
Yan, Zhenga3fc9802014-11-11 16:30:55 +0800258 Opt_cephx_require_signatures,
259 Opt_nocephx_require_signatures,
Ilya Dryomova51983e2015-10-28 23:52:06 +0100260 Opt_cephx_sign_messages,
261 Opt_nocephx_sign_messages,
Chaitanya Huilgolba988f82015-01-23 16:41:25 +0530262 Opt_tcp_nodelay,
263 Opt_notcp_nodelay,
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700264};
265
266static match_table_t opt_tokens = {
267 {Opt_osdtimeout, "osdtimeout=%d"},
268 {Opt_osdkeepalivetimeout, "osdkeepalive=%d"},
269 {Opt_mount_timeout, "mount_timeout=%d"},
270 {Opt_osd_idle_ttl, "osd_idle_ttl=%d"},
Ilya Dryomov7cc5e382017-02-12 17:11:07 +0100271 {Opt_osd_request_timeout, "osd_request_timeout=%d"},
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700272 /* int args above */
273 {Opt_fsid, "fsid=%s"},
274 {Opt_name, "name=%s"},
275 {Opt_secret, "secret=%s"},
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700276 {Opt_key, "key=%s"},
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700277 {Opt_ip, "ip=%s"},
278 /* string args above */
Alex Eldercffaba12012-02-15 07:43:54 -0600279 {Opt_share, "share"},
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700280 {Opt_noshare, "noshare"},
Alex Eldercffaba12012-02-15 07:43:54 -0600281 {Opt_crc, "crc"},
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700282 {Opt_nocrc, "nocrc"},
Yan, Zhenga3fc9802014-11-11 16:30:55 +0800283 {Opt_cephx_require_signatures, "cephx_require_signatures"},
284 {Opt_nocephx_require_signatures, "nocephx_require_signatures"},
Ilya Dryomova51983e2015-10-28 23:52:06 +0100285 {Opt_cephx_sign_messages, "cephx_sign_messages"},
286 {Opt_nocephx_sign_messages, "nocephx_sign_messages"},
Chaitanya Huilgolba988f82015-01-23 16:41:25 +0530287 {Opt_tcp_nodelay, "tcp_nodelay"},
288 {Opt_notcp_nodelay, "notcp_nodelay"},
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700289 {-1, NULL}
290};
291
292void ceph_destroy_options(struct ceph_options *opt)
293{
294 dout("destroy_options %p\n", opt);
295 kfree(opt->name);
Tommi Virtanen8323c3a2011-03-25 16:32:57 -0700296 if (opt->key) {
297 ceph_crypto_key_destroy(opt->key);
298 kfree(opt->key);
299 }
Noah Watkins1cad7892011-09-12 14:51:53 -0700300 kfree(opt->mon_addr);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700301 kfree(opt);
302}
303EXPORT_SYMBOL(ceph_destroy_options);
304
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700305/* get secret from key store */
306static int get_secret(struct ceph_crypto_key *dst, const char *name) {
307 struct key *ukey;
308 int key_err;
309 int err = 0;
Tommi Virtanen4b2a58a2011-03-28 14:59:38 -0700310 struct ceph_crypto_key *ckey;
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700311
Tommi Virtanen4b2a58a2011-03-28 14:59:38 -0700312 ukey = request_key(&key_type_ceph, name, NULL);
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700313 if (!ukey || IS_ERR(ukey)) {
314 /* request_key errors don't map nicely to mount(2)
315 errors; don't even try, but still printk */
316 key_err = PTR_ERR(ukey);
317 switch (key_err) {
318 case -ENOKEY:
Joe Perchesb9a67892014-09-09 21:17:29 -0700319 pr_warn("ceph: Mount failed due to key not found: %s\n",
320 name);
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700321 break;
322 case -EKEYEXPIRED:
Joe Perchesb9a67892014-09-09 21:17:29 -0700323 pr_warn("ceph: Mount failed due to expired key: %s\n",
324 name);
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700325 break;
326 case -EKEYREVOKED:
Joe Perchesb9a67892014-09-09 21:17:29 -0700327 pr_warn("ceph: Mount failed due to revoked key: %s\n",
328 name);
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700329 break;
330 default:
Joe Perchesb9a67892014-09-09 21:17:29 -0700331 pr_warn("ceph: Mount failed due to unknown key error %d: %s\n",
332 key_err, name);
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700333 }
334 err = -EPERM;
335 goto out;
336 }
337
David Howells146aa8b2015-10-21 14:04:48 +0100338 ckey = ukey->payload.data[0];
Tommi Virtanen4b2a58a2011-03-28 14:59:38 -0700339 err = ceph_crypto_key_clone(dst, ckey);
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700340 if (err)
341 goto out_key;
342 /* pass through, err is 0 */
343
344out_key:
345 key_put(ukey);
346out:
347 return err;
348}
349
Alex Elderee577412012-01-24 10:08:36 -0600350struct ceph_options *
351ceph_parse_options(char *options, const char *dev_name,
352 const char *dev_name_end,
353 int (*parse_extra_token)(char *c, void *private),
354 void *private)
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700355{
356 struct ceph_options *opt;
357 const char *c;
358 int err = -ENOMEM;
359 substring_t argstr[MAX_OPT_ARGS];
360
361 opt = kzalloc(sizeof(*opt), GFP_KERNEL);
362 if (!opt)
Alex Elderee577412012-01-24 10:08:36 -0600363 return ERR_PTR(-ENOMEM);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700364 opt->mon_addr = kcalloc(CEPH_MAX_MON, sizeof(*opt->mon_addr),
365 GFP_KERNEL);
366 if (!opt->mon_addr)
367 goto out;
368
369 dout("parse_options %p options '%s' dev_name '%s'\n", opt, options,
370 dev_name);
371
372 /* start with defaults */
373 opt->flags = CEPH_OPT_DEFAULT;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700374 opt->osd_keepalive_timeout = CEPH_OSD_KEEPALIVE_DEFAULT;
Ilya Dryomova319bf52015-05-15 12:02:17 +0300375 opt->mount_timeout = CEPH_MOUNT_TIMEOUT_DEFAULT;
376 opt->osd_idle_ttl = CEPH_OSD_IDLE_TTL_DEFAULT;
Ilya Dryomov7cc5e382017-02-12 17:11:07 +0100377 opt->osd_request_timeout = CEPH_OSD_REQUEST_TIMEOUT_DEFAULT;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700378
379 /* get mon ip(s) */
380 /* ip1[:port1][,ip2[:port2]...] */
381 err = ceph_parse_ips(dev_name, dev_name_end, opt->mon_addr,
382 CEPH_MAX_MON, &opt->num_mon);
383 if (err < 0)
384 goto out;
385
386 /* parse mount options */
387 while ((c = strsep(&options, ",")) != NULL) {
388 int token, intval, ret;
389 if (!*c)
390 continue;
391 err = -EINVAL;
392 token = match_token((char *)c, opt_tokens, argstr);
Yehuda Sadeh010e3b42010-09-30 11:58:31 -0700393 if (token < 0 && parse_extra_token) {
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700394 /* extra? */
395 err = parse_extra_token((char *)c, private);
396 if (err < 0) {
397 pr_err("bad option at '%s'\n", c);
398 goto out;
399 }
400 continue;
401 }
402 if (token < Opt_last_int) {
403 ret = match_int(&argstr[0], &intval);
404 if (ret < 0) {
405 pr_err("bad mount option arg (not int) "
406 "at '%s'\n", c);
407 continue;
408 }
409 dout("got int token %d val %d\n", token, intval);
410 } else if (token > Opt_last_int && token < Opt_last_string) {
411 dout("got string token %d val %s\n", token,
412 argstr[0].from);
413 } else {
414 dout("got token %d\n", token);
415 }
416 switch (token) {
417 case Opt_ip:
418 err = ceph_parse_ips(argstr[0].from,
419 argstr[0].to,
420 &opt->my_addr,
421 1, NULL);
422 if (err < 0)
423 goto out;
424 opt->flags |= CEPH_OPT_MYIP;
425 break;
426
427 case Opt_fsid:
428 err = parse_fsid(argstr[0].from, &opt->fsid);
429 if (err == 0)
430 opt->flags |= CEPH_OPT_FSID;
431 break;
432 case Opt_name:
433 opt->name = kstrndup(argstr[0].from,
434 argstr[0].to-argstr[0].from,
435 GFP_KERNEL);
436 break;
437 case Opt_secret:
Tommi Virtanen8323c3a2011-03-25 16:32:57 -0700438 opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL);
439 if (!opt->key) {
440 err = -ENOMEM;
441 goto out;
442 }
443 err = ceph_crypto_key_unarmor(opt->key, argstr[0].from);
444 if (err < 0)
445 goto out;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700446 break;
Tommi Virtanene2c3d292011-03-25 16:40:48 -0700447 case Opt_key:
448 opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL);
449 if (!opt->key) {
450 err = -ENOMEM;
451 goto out;
452 }
453 err = get_secret(opt->key, argstr[0].from);
454 if (err < 0)
455 goto out;
456 break;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700457
458 /* misc */
459 case Opt_osdtimeout:
Joe Perchesb9a67892014-09-09 21:17:29 -0700460 pr_warn("ignoring deprecated osdtimeout option\n");
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700461 break;
462 case Opt_osdkeepalivetimeout:
Ilya Dryomova319bf52015-05-15 12:02:17 +0300463 /* 0 isn't well defined right now, reject it */
464 if (intval < 1 || intval > INT_MAX / 1000) {
465 pr_err("osdkeepalive out of range\n");
466 err = -EINVAL;
467 goto out;
468 }
469 opt->osd_keepalive_timeout =
470 msecs_to_jiffies(intval * 1000);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700471 break;
472 case Opt_osd_idle_ttl:
Ilya Dryomova319bf52015-05-15 12:02:17 +0300473 /* 0 isn't well defined right now, reject it */
474 if (intval < 1 || intval > INT_MAX / 1000) {
475 pr_err("osd_idle_ttl out of range\n");
476 err = -EINVAL;
477 goto out;
478 }
479 opt->osd_idle_ttl = msecs_to_jiffies(intval * 1000);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700480 break;
481 case Opt_mount_timeout:
Ilya Dryomova319bf52015-05-15 12:02:17 +0300482 /* 0 is "wait forever" (i.e. infinite timeout) */
483 if (intval < 0 || intval > INT_MAX / 1000) {
484 pr_err("mount_timeout out of range\n");
485 err = -EINVAL;
486 goto out;
487 }
488 opt->mount_timeout = msecs_to_jiffies(intval * 1000);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700489 break;
Ilya Dryomov7cc5e382017-02-12 17:11:07 +0100490 case Opt_osd_request_timeout:
491 /* 0 is "wait forever" (i.e. infinite timeout) */
492 if (intval < 0 || intval > INT_MAX / 1000) {
493 pr_err("osd_request_timeout out of range\n");
494 err = -EINVAL;
495 goto out;
496 }
497 opt->osd_request_timeout = msecs_to_jiffies(intval * 1000);
498 break;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700499
Alex Eldercffaba12012-02-15 07:43:54 -0600500 case Opt_share:
501 opt->flags &= ~CEPH_OPT_NOSHARE;
502 break;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700503 case Opt_noshare:
504 opt->flags |= CEPH_OPT_NOSHARE;
505 break;
506
Alex Eldercffaba12012-02-15 07:43:54 -0600507 case Opt_crc:
508 opt->flags &= ~CEPH_OPT_NOCRC;
509 break;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700510 case Opt_nocrc:
511 opt->flags |= CEPH_OPT_NOCRC;
512 break;
Chaitanya Huilgolba988f82015-01-23 16:41:25 +0530513
Yan, Zhenga3fc9802014-11-11 16:30:55 +0800514 case Opt_cephx_require_signatures:
515 opt->flags &= ~CEPH_OPT_NOMSGAUTH;
516 break;
517 case Opt_nocephx_require_signatures:
518 opt->flags |= CEPH_OPT_NOMSGAUTH;
519 break;
Ilya Dryomova51983e2015-10-28 23:52:06 +0100520 case Opt_cephx_sign_messages:
521 opt->flags &= ~CEPH_OPT_NOMSGSIGN;
522 break;
523 case Opt_nocephx_sign_messages:
524 opt->flags |= CEPH_OPT_NOMSGSIGN;
525 break;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700526
Chaitanya Huilgolba988f82015-01-23 16:41:25 +0530527 case Opt_tcp_nodelay:
528 opt->flags |= CEPH_OPT_TCP_NODELAY;
529 break;
530 case Opt_notcp_nodelay:
531 opt->flags &= ~CEPH_OPT_TCP_NODELAY;
532 break;
533
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700534 default:
535 BUG_ON(token);
536 }
537 }
538
539 /* success */
Alex Elderee577412012-01-24 10:08:36 -0600540 return opt;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700541
542out:
543 ceph_destroy_options(opt);
Alex Elderee577412012-01-24 10:08:36 -0600544 return ERR_PTR(err);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700545}
546EXPORT_SYMBOL(ceph_parse_options);
547
Ilya Dryomovff40f9a2015-03-25 21:02:16 +0300548int ceph_print_client_options(struct seq_file *m, struct ceph_client *client)
549{
550 struct ceph_options *opt = client->options;
551 size_t pos = m->count;
552
Kees Cooka068acf2015-09-04 15:44:57 -0700553 if (opt->name) {
554 seq_puts(m, "name=");
555 seq_escape(m, opt->name, ", \t\n\\");
556 seq_putc(m, ',');
557 }
Ilya Dryomovff40f9a2015-03-25 21:02:16 +0300558 if (opt->key)
559 seq_puts(m, "secret=<hidden>,");
560
561 if (opt->flags & CEPH_OPT_FSID)
562 seq_printf(m, "fsid=%pU,", &opt->fsid);
563 if (opt->flags & CEPH_OPT_NOSHARE)
564 seq_puts(m, "noshare,");
565 if (opt->flags & CEPH_OPT_NOCRC)
566 seq_puts(m, "nocrc,");
567 if (opt->flags & CEPH_OPT_NOMSGAUTH)
568 seq_puts(m, "nocephx_require_signatures,");
Ilya Dryomova51983e2015-10-28 23:52:06 +0100569 if (opt->flags & CEPH_OPT_NOMSGSIGN)
570 seq_puts(m, "nocephx_sign_messages,");
Ilya Dryomovff40f9a2015-03-25 21:02:16 +0300571 if ((opt->flags & CEPH_OPT_TCP_NODELAY) == 0)
572 seq_puts(m, "notcp_nodelay,");
573
574 if (opt->mount_timeout != CEPH_MOUNT_TIMEOUT_DEFAULT)
Ilya Dryomova319bf52015-05-15 12:02:17 +0300575 seq_printf(m, "mount_timeout=%d,",
576 jiffies_to_msecs(opt->mount_timeout) / 1000);
Ilya Dryomovff40f9a2015-03-25 21:02:16 +0300577 if (opt->osd_idle_ttl != CEPH_OSD_IDLE_TTL_DEFAULT)
Ilya Dryomova319bf52015-05-15 12:02:17 +0300578 seq_printf(m, "osd_idle_ttl=%d,",
579 jiffies_to_msecs(opt->osd_idle_ttl) / 1000);
Ilya Dryomovff40f9a2015-03-25 21:02:16 +0300580 if (opt->osd_keepalive_timeout != CEPH_OSD_KEEPALIVE_DEFAULT)
581 seq_printf(m, "osdkeepalivetimeout=%d,",
Ilya Dryomova319bf52015-05-15 12:02:17 +0300582 jiffies_to_msecs(opt->osd_keepalive_timeout) / 1000);
Ilya Dryomov7cc5e382017-02-12 17:11:07 +0100583 if (opt->osd_request_timeout != CEPH_OSD_REQUEST_TIMEOUT_DEFAULT)
584 seq_printf(m, "osd_request_timeout=%d,",
585 jiffies_to_msecs(opt->osd_request_timeout) / 1000);
Ilya Dryomovff40f9a2015-03-25 21:02:16 +0300586
587 /* drop redundant comma */
588 if (m->count != pos)
589 m->count--;
590
591 return 0;
592}
593EXPORT_SYMBOL(ceph_print_client_options);
594
Ilya Dryomov005a07bf2016-08-18 18:38:43 +0200595struct ceph_entity_addr *ceph_client_addr(struct ceph_client *client)
596{
597 return &client->msgr.inst.addr;
598}
599EXPORT_SYMBOL(ceph_client_addr);
600
Ilya Dryomov033268a2016-08-12 14:59:58 +0200601u64 ceph_client_gid(struct ceph_client *client)
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700602{
603 return client->monc.auth->global_id;
604}
Ilya Dryomov033268a2016-08-12 14:59:58 +0200605EXPORT_SYMBOL(ceph_client_gid);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700606
607/*
608 * create a fresh client instance
609 */
Ilya Dryomov74da4a0f2017-03-03 18:16:07 +0100610struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private)
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700611{
612 struct ceph_client *client;
Sage Weil6ab00d42011-08-09 09:41:59 -0700613 struct ceph_entity_addr *myaddr = NULL;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700614 int err = -ENOMEM;
615
616 client = kzalloc(sizeof(*client), GFP_KERNEL);
617 if (client == NULL)
618 return ERR_PTR(-ENOMEM);
619
620 client->private = private;
621 client->options = opt;
622
623 mutex_init(&client->mount_mutex);
624 init_waitqueue_head(&client->auth_wq);
625 client->auth_err = 0;
626
627 client->extra_mon_dispatch = NULL;
Ilya Dryomov74da4a0f2017-03-03 18:16:07 +0100628 client->supported_features = CEPH_FEATURES_SUPPORTED_DEFAULT;
629 client->required_features = CEPH_FEATURES_REQUIRED_DEFAULT;
630
631 if (!ceph_test_opt(client, NOMSGAUTH))
632 client->required_features |= CEPH_FEATURE_MSG_AUTH;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700633
Sage Weil6ab00d42011-08-09 09:41:59 -0700634 /* msgr */
635 if (ceph_test_opt(client, MYIP))
636 myaddr = &client->options->my_addr;
Chaitanya Huilgolba988f82015-01-23 16:41:25 +0530637
Ilya Dryomov859bff52015-10-28 23:50:58 +0100638 ceph_messenger_init(&client->msgr, myaddr);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700639
640 /* subsystems */
641 err = ceph_monc_init(&client->monc, client);
642 if (err < 0)
Alex Elder15d98822012-05-26 23:26:43 -0500643 goto fail;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700644 err = ceph_osdc_init(&client->osdc, client);
645 if (err < 0)
646 goto fail_monc;
647
648 return client;
649
650fail_monc:
651 ceph_monc_stop(&client->monc);
652fail:
Ilya Dryomov757856d2015-06-25 17:47:45 +0300653 ceph_messenger_fini(&client->msgr);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700654 kfree(client);
655 return ERR_PTR(err);
656}
657EXPORT_SYMBOL(ceph_create_client);
658
659void ceph_destroy_client(struct ceph_client *client)
660{
661 dout("destroy_client %p\n", client);
662
Guanjun Hea2a32582012-07-08 19:50:33 -0700663 atomic_set(&client->msgr.stopping, 1);
664
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700665 /* unmount */
666 ceph_osdc_stop(&client->osdc);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700667 ceph_monc_stop(&client->monc);
Ilya Dryomov757856d2015-06-25 17:47:45 +0300668 ceph_messenger_fini(&client->msgr);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700669
670 ceph_debugfs_client_cleanup(client);
671
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700672 ceph_destroy_options(client->options);
673
674 kfree(client);
675 dout("destroy_client %p done\n", client);
676}
677EXPORT_SYMBOL(ceph_destroy_client);
678
679/*
680 * true if we have the mon map (and have thus joined the cluster)
681 */
Zhang Zhuoyu3b33f692016-03-25 05:18:39 -0400682static bool have_mon_and_osd_map(struct ceph_client *client)
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700683{
684 return client->monc.monmap && client->monc.monmap->epoch &&
685 client->osdc.osdmap && client->osdc.osdmap->epoch;
686}
687
688/*
689 * mount: join the ceph cluster, and open root directory.
690 */
691int __ceph_open_session(struct ceph_client *client, unsigned long started)
692{
Ilya Dryomova319bf52015-05-15 12:02:17 +0300693 unsigned long timeout = client->options->mount_timeout;
Ilya Dryomov216639d2015-05-19 12:03:33 +0300694 long err;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700695
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700696 /* open session, and wait for mon and osd maps */
697 err = ceph_monc_open_session(&client->monc);
698 if (err < 0)
699 return err;
700
701 while (!have_mon_and_osd_map(client)) {
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700702 if (timeout && time_after_eq(jiffies, started + timeout))
Ilya Dryomov216639d2015-05-19 12:03:33 +0300703 return -ETIMEDOUT;
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700704
705 /* wait */
706 dout("mount waiting for mon_map\n");
707 err = wait_event_interruptible_timeout(client->auth_wq,
708 have_mon_and_osd_map(client) || (client->auth_err < 0),
Ilya Dryomova319bf52015-05-15 12:02:17 +0300709 ceph_timeout_jiffies(timeout));
Ilya Dryomov216639d2015-05-19 12:03:33 +0300710 if (err < 0)
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700711 return err;
712 if (client->auth_err < 0)
713 return client->auth_err;
714 }
715
Ilya Dryomov033268a2016-08-12 14:59:58 +0200716 pr_info("client%llu fsid %pU\n", ceph_client_gid(client),
717 &client->fsid);
Ilya Dryomov02ac9562016-01-06 12:56:21 +0300718 ceph_debugfs_client_init(client);
719
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700720 return 0;
721}
722EXPORT_SYMBOL(__ceph_open_session);
723
724
725int ceph_open_session(struct ceph_client *client)
726{
727 int ret;
728 unsigned long started = jiffies; /* note the start time */
729
730 dout("open_session start\n");
731 mutex_lock(&client->mount_mutex);
732
733 ret = __ceph_open_session(client, started);
734
735 mutex_unlock(&client->mount_mutex);
736 return ret;
737}
738EXPORT_SYMBOL(ceph_open_session);
739
740
741static int __init init_ceph_lib(void)
742{
743 int ret = 0;
744
745 ret = ceph_debugfs_init();
746 if (ret < 0)
747 goto out;
748
Tommi Virtanen4b2a58a2011-03-28 14:59:38 -0700749 ret = ceph_crypto_init();
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700750 if (ret < 0)
751 goto out_debugfs;
752
Tommi Virtanen4b2a58a2011-03-28 14:59:38 -0700753 ret = ceph_msgr_init();
754 if (ret < 0)
755 goto out_crypto;
756
Alex Elder5522ae02013-05-01 12:43:04 -0500757 ret = ceph_osdc_setup();
758 if (ret < 0)
759 goto out_msgr;
760
Sage Weil4f6a7e52013-02-23 10:41:09 -0800761 pr_info("loaded (mon/osd proto %d/%d)\n",
762 CEPH_MONC_PROTOCOL, CEPH_OSDC_PROTOCOL);
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700763
764 return 0;
765
Alex Elder5522ae02013-05-01 12:43:04 -0500766out_msgr:
767 ceph_msgr_exit();
Tommi Virtanen4b2a58a2011-03-28 14:59:38 -0700768out_crypto:
769 ceph_crypto_shutdown();
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700770out_debugfs:
771 ceph_debugfs_cleanup();
772out:
773 return ret;
774}
775
776static void __exit exit_ceph_lib(void)
777{
778 dout("exit_ceph_lib\n");
Yan, Zheng51e92732016-02-05 15:36:22 +0800779 WARN_ON(!ceph_strings_empty());
780
Alex Elder5522ae02013-05-01 12:43:04 -0500781 ceph_osdc_cleanup();
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700782 ceph_msgr_exit();
Tommi Virtanen4b2a58a2011-03-28 14:59:38 -0700783 ceph_crypto_shutdown();
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700784 ceph_debugfs_cleanup();
785}
786
787module_init(init_ceph_lib);
788module_exit(exit_ceph_lib);
789
790MODULE_AUTHOR("Sage Weil <sage@newdream.net>");
791MODULE_AUTHOR("Yehuda Sadeh <yehuda@hq.newdream.net>");
792MODULE_AUTHOR("Patience Warnick <patience@newdream.net>");
Hong Zhiguo6c13a6b2015-06-10 21:13:25 +0800793MODULE_DESCRIPTION("Ceph core library");
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700794MODULE_LICENSE("GPL");