1 // SPDX-License-Identifier: GPL-2.0-only
3 #include <linux/ceph/ceph_debug.h>
4 #include <linux/backing-dev.h>
5 #include <linux/ctype.h>
7 #include <linux/inet.h>
10 #include <keys/ceph-type.h>
11 #include <linux/module.h>
12 #include <linux/mount.h>
13 #include <linux/nsproxy.h>
14 #include <linux/fs_parser.h>
15 #include <linux/sched.h>
16 #include <linux/sched/mm.h>
17 #include <linux/seq_file.h>
18 #include <linux/slab.h>
19 #include <linux/statfs.h>
20 #include <linux/string.h>
21 #include <linux/vmalloc.h>
24 #include <linux/ceph/ceph_features.h>
25 #include <linux/ceph/libceph.h>
26 #include <linux/ceph/debugfs.h>
27 #include <linux/ceph/decode.h>
28 #include <linux/ceph/mon_client.h>
29 #include <linux/ceph/auth.h>
34 * Module compatibility interface. For now it doesn't do anything,
35 * but its existence signals a certain level of functionality.
37 * The data buffer is used to pass information both to and from
38 * libceph. The return value indicates whether libceph determines
39 * it is compatible with the caller (from another kernel module),
40 * given the provided data.
42 * The data pointer can be null.
44 bool libceph_compatible(void *data)
48 EXPORT_SYMBOL(libceph_compatible);
50 static int param_get_supported_features(char *buffer,
51 const struct kernel_param *kp)
53 return sprintf(buffer, "0x%llx", CEPH_FEATURES_SUPPORTED_DEFAULT);
55 static const struct kernel_param_ops param_ops_supported_features = {
56 .get = param_get_supported_features,
58 module_param_cb(supported_features, ¶m_ops_supported_features, NULL,
61 const char *ceph_msg_type_name(int 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";
74 case CEPH_MSG_MON_GET_VERSION: return "mon_get_version";
75 case CEPH_MSG_MON_GET_VERSION_REPLY: return "mon_get_version_reply";
76 case CEPH_MSG_MDS_MAP: return "mds_map";
77 case CEPH_MSG_FS_MAP_USER: return "fs_map_user";
78 case CEPH_MSG_CLIENT_SESSION: return "client_session";
79 case CEPH_MSG_CLIENT_RECONNECT: return "client_reconnect";
80 case CEPH_MSG_CLIENT_REQUEST: return "client_request";
81 case CEPH_MSG_CLIENT_REQUEST_FORWARD: return "client_request_forward";
82 case CEPH_MSG_CLIENT_REPLY: return "client_reply";
83 case CEPH_MSG_CLIENT_CAPS: return "client_caps";
84 case CEPH_MSG_CLIENT_CAPRELEASE: return "client_cap_release";
85 case CEPH_MSG_CLIENT_QUOTA: return "client_quota";
86 case CEPH_MSG_CLIENT_SNAP: return "client_snap";
87 case CEPH_MSG_CLIENT_LEASE: return "client_lease";
88 case CEPH_MSG_POOLOP_REPLY: return "poolop_reply";
89 case CEPH_MSG_POOLOP: return "poolop";
90 case CEPH_MSG_MON_COMMAND: return "mon_command";
91 case CEPH_MSG_MON_COMMAND_ACK: return "mon_command_ack";
92 case CEPH_MSG_OSD_MAP: return "osd_map";
93 case CEPH_MSG_OSD_OP: return "osd_op";
94 case CEPH_MSG_OSD_OPREPLY: return "osd_opreply";
95 case CEPH_MSG_WATCH_NOTIFY: return "watch_notify";
96 case CEPH_MSG_OSD_BACKOFF: return "osd_backoff";
97 default: return "unknown";
100 EXPORT_SYMBOL(ceph_msg_type_name);
103 * Initially learn our fsid, or verify an fsid matches.
105 int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid)
107 if (client->have_fsid) {
108 if (ceph_fsid_compare(&client->fsid, fsid)) {
109 pr_err("bad fsid, had %pU got %pU",
110 &client->fsid, fsid);
114 memcpy(&client->fsid, fsid, sizeof(*fsid));
118 EXPORT_SYMBOL(ceph_check_fsid);
120 static int strcmp_null(const char *s1, const char *s2)
128 return strcmp(s1, s2);
131 int ceph_compare_options(struct ceph_options *new_opt,
132 struct ceph_client *client)
134 struct ceph_options *opt1 = new_opt;
135 struct ceph_options *opt2 = client->options;
136 int ofs = offsetof(struct ceph_options, mon_addr);
141 * Don't bother comparing options if network namespaces don't
144 if (!net_eq(current->nsproxy->net_ns, read_pnet(&client->msgr.net)))
147 ret = memcmp(opt1, opt2, ofs);
151 ret = strcmp_null(opt1->name, opt2->name);
155 if (opt1->key && !opt2->key)
157 if (!opt1->key && opt2->key)
159 if (opt1->key && opt2->key) {
160 if (opt1->key->type != opt2->key->type)
162 if (opt1->key->created.tv_sec != opt2->key->created.tv_sec)
164 if (opt1->key->created.tv_nsec != opt2->key->created.tv_nsec)
166 if (opt1->key->len != opt2->key->len)
168 if (opt1->key->key && !opt2->key->key)
170 if (!opt1->key->key && opt2->key->key)
172 if (opt1->key->key && opt2->key->key) {
173 ret = memcmp(opt1->key->key, opt2->key->key, opt1->key->len);
179 ret = ceph_compare_crush_locs(&opt1->crush_locs, &opt2->crush_locs);
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,
191 EXPORT_SYMBOL(ceph_compare_options);
194 * kvmalloc() doesn't fall back to the vmalloc allocator unless flags are
195 * compatible with (a superset of) GFP_KERNEL. This is because while the
196 * actual pages are allocated with the specified flags, the page table pages
197 * are always allocated with GFP_KERNEL.
199 * ceph_kvmalloc() may be called with GFP_KERNEL, GFP_NOFS or GFP_NOIO.
201 void *ceph_kvmalloc(size_t size, gfp_t flags)
205 if ((flags & (__GFP_IO | __GFP_FS)) == (__GFP_IO | __GFP_FS)) {
206 p = kvmalloc(size, flags);
207 } else if ((flags & (__GFP_IO | __GFP_FS)) == __GFP_IO) {
208 unsigned int nofs_flag = memalloc_nofs_save();
209 p = kvmalloc(size, GFP_KERNEL);
210 memalloc_nofs_restore(nofs_flag);
212 unsigned int noio_flag = memalloc_noio_save();
213 p = kvmalloc(size, GFP_KERNEL);
214 memalloc_noio_restore(noio_flag);
220 static int parse_fsid(const char *str, struct ceph_fsid *fsid)
227 dout("parse_fsid '%s'\n", str);
229 while (*str && i < 16) {
234 if (!isxdigit(str[0]) || !isxdigit(str[1]))
238 if (sscanf(tmp, "%x", &d) < 1)
240 fsid->fsid[i] = d & 0xff;
247 dout("parse_fsid ret %d got fsid %pU\n", err, fsid);
256 Opt_osdkeepalivetimeout,
259 Opt_osd_request_timeout,
267 Opt_read_from_replica,
268 /* string args above */
271 Opt_cephx_require_signatures,
272 Opt_cephx_sign_messages,
278 Opt_read_from_replica_no,
279 Opt_read_from_replica_balance,
280 Opt_read_from_replica_localize,
283 static const struct constant_table ceph_param_read_from_replica[] = {
284 {"no", Opt_read_from_replica_no},
285 {"balance", Opt_read_from_replica_balance},
286 {"localize", Opt_read_from_replica_localize},
290 static const struct fs_parameter_spec ceph_parameters[] = {
291 fsparam_flag ("abort_on_full", Opt_abort_on_full),
292 fsparam_flag_no ("cephx_require_signatures", Opt_cephx_require_signatures),
293 fsparam_flag_no ("cephx_sign_messages", Opt_cephx_sign_messages),
294 fsparam_flag_no ("crc", Opt_crc),
295 fsparam_string ("crush_location", Opt_crush_location),
296 fsparam_string ("fsid", Opt_fsid),
297 fsparam_string ("ip", Opt_ip),
298 fsparam_string ("key", Opt_key),
299 fsparam_u32 ("mount_timeout", Opt_mount_timeout),
300 fsparam_string ("name", Opt_name),
301 fsparam_u32 ("osd_idle_ttl", Opt_osd_idle_ttl),
302 fsparam_u32 ("osd_request_timeout", Opt_osd_request_timeout),
303 fsparam_u32 ("osdkeepalive", Opt_osdkeepalivetimeout),
304 __fsparam (fs_param_is_s32, "osdtimeout", Opt_osdtimeout,
305 fs_param_deprecated, NULL),
306 fsparam_enum ("read_from_replica", Opt_read_from_replica,
307 ceph_param_read_from_replica),
308 fsparam_string ("secret", Opt_secret),
309 fsparam_flag_no ("share", Opt_share),
310 fsparam_flag_no ("tcp_nodelay", Opt_tcp_nodelay),
314 struct ceph_options *ceph_alloc_options(void)
316 struct ceph_options *opt;
318 opt = kzalloc(sizeof(*opt), GFP_KERNEL);
322 opt->crush_locs = RB_ROOT;
323 opt->mon_addr = kcalloc(CEPH_MAX_MON, sizeof(*opt->mon_addr),
325 if (!opt->mon_addr) {
330 opt->flags = CEPH_OPT_DEFAULT;
331 opt->osd_keepalive_timeout = CEPH_OSD_KEEPALIVE_DEFAULT;
332 opt->mount_timeout = CEPH_MOUNT_TIMEOUT_DEFAULT;
333 opt->osd_idle_ttl = CEPH_OSD_IDLE_TTL_DEFAULT;
334 opt->osd_request_timeout = CEPH_OSD_REQUEST_TIMEOUT_DEFAULT;
337 EXPORT_SYMBOL(ceph_alloc_options);
339 void ceph_destroy_options(struct ceph_options *opt)
341 dout("destroy_options %p\n", opt);
345 ceph_clear_crush_locs(&opt->crush_locs);
348 ceph_crypto_key_destroy(opt->key);
351 kfree(opt->mon_addr);
354 EXPORT_SYMBOL(ceph_destroy_options);
356 /* get secret from key store */
357 static int get_secret(struct ceph_crypto_key *dst, const char *name,
363 struct ceph_crypto_key *ckey;
365 ukey = request_key(&key_type_ceph, name, NULL);
367 /* request_key errors don't map nicely to mount(2)
368 errors; don't even try, but still printk */
369 key_err = PTR_ERR(ukey);
372 error_plog(log, "Failed due to key not found: %s",
376 error_plog(log, "Failed due to expired key: %s",
380 error_plog(log, "Failed due to revoked key: %s",
384 error_plog(log, "Failed due to key error %d: %s",
391 ckey = ukey->payload.data[0];
392 err = ceph_crypto_key_clone(dst, ckey);
395 /* pass through, err is 0 */
403 int ceph_parse_mon_ips(const char *buf, size_t len, struct ceph_options *opt,
406 struct p_log log = {.prefix = "libceph", .log = l};
409 /* ip1[:port1][,ip2[:port2]...] */
410 ret = ceph_parse_ips(buf, buf + len, opt->mon_addr, CEPH_MAX_MON,
413 error_plog(&log, "Failed to parse monitor IPs: %d", ret);
419 EXPORT_SYMBOL(ceph_parse_mon_ips);
421 int ceph_parse_param(struct fs_parameter *param, struct ceph_options *opt,
424 struct fs_parse_result result;
426 struct p_log log = {.prefix = "libceph", .log = l};
428 token = __fs_parse(&log, ceph_parameters, param, &result);
429 dout("%s fs_parse '%s' token %d\n", __func__, param->key, token);
435 err = ceph_parse_ips(param->string,
436 param->string + param->size,
440 error_plog(&log, "Failed to parse ip: %d", err);
443 opt->flags |= CEPH_OPT_MYIP;
447 err = parse_fsid(param->string, &opt->fsid);
449 error_plog(&log, "Failed to parse fsid: %d", err);
452 opt->flags |= CEPH_OPT_FSID;
456 opt->name = param->string;
457 param->string = NULL;
460 ceph_crypto_key_destroy(opt->key);
463 opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL);
466 err = ceph_crypto_key_unarmor(opt->key, param->string);
468 error_plog(&log, "Failed to parse secret: %d", err);
473 ceph_crypto_key_destroy(opt->key);
476 opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL);
479 return get_secret(opt->key, param->string, &log);
480 case Opt_crush_location:
481 ceph_clear_crush_locs(&opt->crush_locs);
482 err = ceph_parse_crush_location(param->string,
485 error_plog(&log, "Failed to parse CRUSH location: %d",
490 case Opt_read_from_replica:
491 switch (result.uint_32) {
492 case Opt_read_from_replica_no:
493 opt->osd_req_flags &= ~(CEPH_OSD_FLAG_BALANCE_READS |
494 CEPH_OSD_FLAG_LOCALIZE_READS);
496 case Opt_read_from_replica_balance:
497 opt->osd_req_flags |= CEPH_OSD_FLAG_BALANCE_READS;
498 opt->osd_req_flags &= ~CEPH_OSD_FLAG_LOCALIZE_READS;
500 case Opt_read_from_replica_localize:
501 opt->osd_req_flags |= CEPH_OSD_FLAG_LOCALIZE_READS;
502 opt->osd_req_flags &= ~CEPH_OSD_FLAG_BALANCE_READS;
510 warn_plog(&log, "Ignoring osdtimeout");
512 case Opt_osdkeepalivetimeout:
513 /* 0 isn't well defined right now, reject it */
514 if (result.uint_32 < 1 || result.uint_32 > INT_MAX / 1000)
516 opt->osd_keepalive_timeout =
517 msecs_to_jiffies(result.uint_32 * 1000);
519 case Opt_osd_idle_ttl:
520 /* 0 isn't well defined right now, reject it */
521 if (result.uint_32 < 1 || result.uint_32 > INT_MAX / 1000)
523 opt->osd_idle_ttl = msecs_to_jiffies(result.uint_32 * 1000);
525 case Opt_mount_timeout:
526 /* 0 is "wait forever" (i.e. infinite timeout) */
527 if (result.uint_32 > INT_MAX / 1000)
529 opt->mount_timeout = msecs_to_jiffies(result.uint_32 * 1000);
531 case Opt_osd_request_timeout:
532 /* 0 is "wait forever" (i.e. infinite timeout) */
533 if (result.uint_32 > INT_MAX / 1000)
535 opt->osd_request_timeout =
536 msecs_to_jiffies(result.uint_32 * 1000);
541 opt->flags &= ~CEPH_OPT_NOSHARE;
543 opt->flags |= CEPH_OPT_NOSHARE;
547 opt->flags &= ~CEPH_OPT_NOCRC;
549 opt->flags |= CEPH_OPT_NOCRC;
551 case Opt_cephx_require_signatures:
553 opt->flags &= ~CEPH_OPT_NOMSGAUTH;
555 opt->flags |= CEPH_OPT_NOMSGAUTH;
557 case Opt_cephx_sign_messages:
559 opt->flags &= ~CEPH_OPT_NOMSGSIGN;
561 opt->flags |= CEPH_OPT_NOMSGSIGN;
563 case Opt_tcp_nodelay:
565 opt->flags |= CEPH_OPT_TCP_NODELAY;
567 opt->flags &= ~CEPH_OPT_TCP_NODELAY;
570 case Opt_abort_on_full:
571 opt->flags |= CEPH_OPT_ABORT_ON_FULL;
581 return inval_plog(&log, "%s out of range", param->key);
583 EXPORT_SYMBOL(ceph_parse_param);
585 int ceph_print_client_options(struct seq_file *m, struct ceph_client *client,
588 struct ceph_options *opt = client->options;
589 size_t pos = m->count;
593 seq_puts(m, "name=");
594 seq_escape(m, opt->name, ", \t\n\\");
598 seq_puts(m, "secret=<hidden>,");
600 if (!RB_EMPTY_ROOT(&opt->crush_locs)) {
601 seq_puts(m, "crush_location=");
602 for (n = rb_first(&opt->crush_locs); ; ) {
603 struct crush_loc_node *loc =
604 rb_entry(n, struct crush_loc_node, cl_node);
606 seq_printf(m, "%s:%s", loc->cl_loc.cl_type_name,
607 loc->cl_loc.cl_name);
616 if (opt->osd_req_flags & CEPH_OSD_FLAG_BALANCE_READS) {
617 seq_puts(m, "read_from_replica=balance,");
618 } else if (opt->osd_req_flags & CEPH_OSD_FLAG_LOCALIZE_READS) {
619 seq_puts(m, "read_from_replica=localize,");
622 if (opt->flags & CEPH_OPT_FSID)
623 seq_printf(m, "fsid=%pU,", &opt->fsid);
624 if (opt->flags & CEPH_OPT_NOSHARE)
625 seq_puts(m, "noshare,");
626 if (opt->flags & CEPH_OPT_NOCRC)
627 seq_puts(m, "nocrc,");
628 if (opt->flags & CEPH_OPT_NOMSGAUTH)
629 seq_puts(m, "nocephx_require_signatures,");
630 if (opt->flags & CEPH_OPT_NOMSGSIGN)
631 seq_puts(m, "nocephx_sign_messages,");
632 if ((opt->flags & CEPH_OPT_TCP_NODELAY) == 0)
633 seq_puts(m, "notcp_nodelay,");
634 if (show_all && (opt->flags & CEPH_OPT_ABORT_ON_FULL))
635 seq_puts(m, "abort_on_full,");
637 if (opt->mount_timeout != CEPH_MOUNT_TIMEOUT_DEFAULT)
638 seq_printf(m, "mount_timeout=%d,",
639 jiffies_to_msecs(opt->mount_timeout) / 1000);
640 if (opt->osd_idle_ttl != CEPH_OSD_IDLE_TTL_DEFAULT)
641 seq_printf(m, "osd_idle_ttl=%d,",
642 jiffies_to_msecs(opt->osd_idle_ttl) / 1000);
643 if (opt->osd_keepalive_timeout != CEPH_OSD_KEEPALIVE_DEFAULT)
644 seq_printf(m, "osdkeepalivetimeout=%d,",
645 jiffies_to_msecs(opt->osd_keepalive_timeout) / 1000);
646 if (opt->osd_request_timeout != CEPH_OSD_REQUEST_TIMEOUT_DEFAULT)
647 seq_printf(m, "osd_request_timeout=%d,",
648 jiffies_to_msecs(opt->osd_request_timeout) / 1000);
650 /* drop redundant comma */
656 EXPORT_SYMBOL(ceph_print_client_options);
658 struct ceph_entity_addr *ceph_client_addr(struct ceph_client *client)
660 return &client->msgr.inst.addr;
662 EXPORT_SYMBOL(ceph_client_addr);
664 u64 ceph_client_gid(struct ceph_client *client)
666 return client->monc.auth->global_id;
668 EXPORT_SYMBOL(ceph_client_gid);
671 * create a fresh client instance
673 struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private)
675 struct ceph_client *client;
676 struct ceph_entity_addr *myaddr = NULL;
679 err = wait_for_random_bytes();
683 client = kzalloc(sizeof(*client), GFP_KERNEL);
685 return ERR_PTR(-ENOMEM);
687 client->private = private;
688 client->options = opt;
690 mutex_init(&client->mount_mutex);
691 init_waitqueue_head(&client->auth_wq);
692 client->auth_err = 0;
694 client->extra_mon_dispatch = NULL;
695 client->supported_features = CEPH_FEATURES_SUPPORTED_DEFAULT;
696 client->required_features = CEPH_FEATURES_REQUIRED_DEFAULT;
698 if (!ceph_test_opt(client, NOMSGAUTH))
699 client->required_features |= CEPH_FEATURE_MSG_AUTH;
702 if (ceph_test_opt(client, MYIP))
703 myaddr = &client->options->my_addr;
705 ceph_messenger_init(&client->msgr, myaddr);
708 err = ceph_monc_init(&client->monc, client);
711 err = ceph_osdc_init(&client->osdc, client);
718 ceph_monc_stop(&client->monc);
720 ceph_messenger_fini(&client->msgr);
724 EXPORT_SYMBOL(ceph_create_client);
726 void ceph_destroy_client(struct ceph_client *client)
728 dout("destroy_client %p\n", client);
730 atomic_set(&client->msgr.stopping, 1);
733 ceph_osdc_stop(&client->osdc);
734 ceph_monc_stop(&client->monc);
735 ceph_messenger_fini(&client->msgr);
737 ceph_debugfs_client_cleanup(client);
739 ceph_destroy_options(client->options);
742 dout("destroy_client %p done\n", client);
744 EXPORT_SYMBOL(ceph_destroy_client);
746 void ceph_reset_client_addr(struct ceph_client *client)
748 ceph_messenger_reset_nonce(&client->msgr);
749 ceph_monc_reopen_session(&client->monc);
750 ceph_osdc_reopen_osds(&client->osdc);
752 EXPORT_SYMBOL(ceph_reset_client_addr);
755 * true if we have the mon map (and have thus joined the cluster)
757 static bool have_mon_and_osd_map(struct ceph_client *client)
759 return client->monc.monmap && client->monc.monmap->epoch &&
760 client->osdc.osdmap && client->osdc.osdmap->epoch;
764 * mount: join the ceph cluster, and open root directory.
766 int __ceph_open_session(struct ceph_client *client, unsigned long started)
768 unsigned long timeout = client->options->mount_timeout;
771 /* open session, and wait for mon and osd maps */
772 err = ceph_monc_open_session(&client->monc);
776 while (!have_mon_and_osd_map(client)) {
777 if (timeout && time_after_eq(jiffies, started + timeout))
781 dout("mount waiting for mon_map\n");
782 err = wait_event_interruptible_timeout(client->auth_wq,
783 have_mon_and_osd_map(client) || (client->auth_err < 0),
784 ceph_timeout_jiffies(timeout));
787 if (client->auth_err < 0)
788 return client->auth_err;
791 pr_info("client%llu fsid %pU\n", ceph_client_gid(client),
793 ceph_debugfs_client_init(client);
797 EXPORT_SYMBOL(__ceph_open_session);
799 int ceph_open_session(struct ceph_client *client)
802 unsigned long started = jiffies; /* note the start time */
804 dout("open_session start\n");
805 mutex_lock(&client->mount_mutex);
807 ret = __ceph_open_session(client, started);
809 mutex_unlock(&client->mount_mutex);
812 EXPORT_SYMBOL(ceph_open_session);
814 int ceph_wait_for_latest_osdmap(struct ceph_client *client,
815 unsigned long timeout)
820 ret = ceph_monc_get_version(&client->monc, "osdmap", &newest_epoch);
824 if (client->osdc.osdmap->epoch >= newest_epoch)
827 ceph_osdc_maybe_request_map(&client->osdc);
828 return ceph_monc_wait_osdmap(&client->monc, newest_epoch, timeout);
830 EXPORT_SYMBOL(ceph_wait_for_latest_osdmap);
832 static int __init init_ceph_lib(void)
838 ret = ceph_crypto_init();
842 ret = ceph_msgr_init();
846 ret = ceph_osdc_setup();
850 pr_info("loaded (mon/osd proto %d/%d)\n",
851 CEPH_MONC_PROTOCOL, CEPH_OSDC_PROTOCOL);
858 ceph_crypto_shutdown();
860 ceph_debugfs_cleanup();
864 static void __exit exit_ceph_lib(void)
866 dout("exit_ceph_lib\n");
867 WARN_ON(!ceph_strings_empty());
871 ceph_crypto_shutdown();
872 ceph_debugfs_cleanup();
875 module_init(init_ceph_lib);
876 module_exit(exit_ceph_lib);
878 MODULE_AUTHOR("Sage Weil <sage@newdream.net>");
879 MODULE_AUTHOR("Yehuda Sadeh <yehuda@hq.newdream.net>");
880 MODULE_AUTHOR("Patience Warnick <patience@newdream.net>");
881 MODULE_DESCRIPTION("Ceph core library");
882 MODULE_LICENSE("GPL");