library/elliptics.h

   1 /*
   2  * 2008+ Copyright (c) Evgeniy Polyakov <zbr@ioremap.net>
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #ifndef __DNET_ELLIPTICS_H
  17 #define __DNET_ELLIPTICS_H
  18
  19 #include <sys/time.h>
  20 #include <sys/socket.h>
  21 #include <sys/epoll.h>
  22
  23 #include <errno.h>
  24 #include <netdb.h>
  25 #include <string.h>
  26 #include <pthread.h>
  27 #include <time.h>
  28
  29 #include <netinet/in.h>
  30 #include <arpa/inet.h>
  31
  32 #include <eblob/blob.h>
  33
  34 #ifndef HAVE_UCHAR
  35 typedef unsigned char u_char;
  36 typedef unsigned short u_short;
  37 #endif
  38
  39 #include "list.h"
  40
  41 #undef offsetof
  42 #include "rbtree.h"
  43
  44 #include "atomic.h"
  45 #include "lock.h"
  46
  47 #include "elliptics/packet.h"
  48 #include "elliptics/interface.h"
  49
  50 #ifdef __cplusplus
  51 extern "C" {
  52 #endif
  53
  54 #ifndef __unused
  55 #define __unused        __attribute__ ((unused))
  56 #endif
  57
  58 struct dnet_node;
  59 struct dnet_group;
  60 struct dnet_net_state;
  61
  62 #define dnet_log(n, mask, format, a...) do { if (n->log && (n->log->log_mask & mask)) dnet_log_raw(n, mask, format, ##a); } while (0)
  63 #define dnet_log_err(n, f, a...) dnet_log(n, DNET_LOG_ERROR, f ": %s [%d].\n", ##a, strerror(errno), errno)
  64
  65 struct dnet_io_req {
  66         struct list_head        req_entry;
  67
  68         struct dnet_net_state   *st;
  69
  70         void                    *header;
  71         size_t                  hsize;
  72
  73         void                    *data;
  74         size_t                  dsize;
  75
  76         int                     close_on_exit;
  77         int                     fd;
  78         off_t                   local_offset;
  79         size_t                  fsize;
  80 };
  81
  82 /*
  83  * Currently executed network state machine:
  84  * receives and sends command and data.
  85  */
  86
  87 /* Reading a command */
  88 #define DNET_IO_CMD             (1<<0)
  89
  90 /* Attached data should be discarded */
  91 #define DNET_IO_DROP            (1<<1)
  92
  93 #define DNET_STATE_MAX_WEIGHT           (1024 * 10)
  94
  95 struct dnet_net_state
  96 {
  97         struct list_head        state_entry;
  98         struct list_head        storage_state_entry;
  99
 100         struct dnet_node        *n;
 101
 102         atomic_t                refcnt;
 103         int                     read_s, write_s;
 104
 105         int                     need_exit;
 106
 107         int                     stall;
 108
 109         int                     __join_state;
 110
 111         struct dnet_addr        addr;
 112
 113         int                     (* process)(struct dnet_net_state *st, struct epoll_event *ev);
 114
 115         struct dnet_cmd         rcv_cmd;
 116         uint64_t                rcv_offset;
 117         uint64_t                rcv_end;
 118         unsigned int            rcv_flags;
 119         void                    *rcv_data;
 120
 121         int                     epoll_fd;
 122         size_t                  send_offset;
 123         pthread_mutex_t         send_lock;
 124         struct list_head        send_list;
 125
 126         pthread_mutex_t         trans_lock;
 127         struct rb_root          trans_root;
 128         struct list_head        trans_list;
 129
 130
 131         int                     la;
 132         unsigned long long      free;
 133         float                   weight;
 134         long                    median_read_time;
 135
 136         struct dnet_idc         *idc;
 137
 138         struct dnet_stat_count  stat[__DNET_CMD_MAX];
 139 };
 140
 141 struct dnet_idc;
 142 struct dnet_state_id {
 143         struct dnet_raw_id      raw;
 144         struct dnet_idc         *idc;
 145 };
 146
 147 struct dnet_idc {
 148         struct dnet_net_state   *st;
 149         struct dnet_group       *group;
 150         int                     id_num;
 151         struct dnet_state_id    ids[];
 152 };
 153
 154 int dnet_idc_create(struct dnet_net_state *st, int group_id, struct dnet_raw_id *ids, int id_num);
 155 void dnet_idc_destroy_nolock(struct dnet_net_state *st);
 156
 157 struct dnet_net_state *dnet_state_create(struct dnet_node *n,
 158                 int group_id, struct dnet_raw_id *ids, int id_num,
 159                 struct dnet_addr *addr, int s, int *errp, int join,
 160                 int (* process)(struct dnet_net_state *st, struct epoll_event *ev));
 161
 162 void dnet_state_reset(struct dnet_net_state *st);
 163 void dnet_state_remove_nolock(struct dnet_net_state *st);
 164
 165 struct dnet_net_state *dnet_state_search_by_addr(struct dnet_node *n, struct dnet_addr *addr);
 166 struct dnet_net_state *dnet_state_get_first(struct dnet_node *n, struct dnet_id *id);
 167 struct dnet_net_state *dnet_state_search_nolock(struct dnet_node *n, struct dnet_id *id);
 168 struct dnet_net_state *dnet_node_state(struct dnet_node *n);
 169
 170 int dnet_search_range(struct dnet_node *n, struct dnet_id *id,
 171                 struct dnet_raw_id *start, struct dnet_raw_id *next);
 172
 173 int dnet_recv_route_list(struct dnet_net_state *st);
 174
 175 void dnet_state_destroy(struct dnet_net_state *st);
 176
 177 void dnet_schedule_command(struct dnet_net_state *st);
 178
 179 int dnet_schedule_send(struct dnet_net_state *st);
 180 int dnet_schedule_recv(struct dnet_net_state *st);
 181
 182 void dnet_unschedule_send(struct dnet_net_state *st);
 183 void dnet_unschedule_recv(struct dnet_net_state *st);
 184
 185 int dnet_setup_control_nolock(struct dnet_net_state *st);
 186
 187 int dnet_add_reconnect_state(struct dnet_node *n, struct dnet_addr *addr, unsigned int join_state);
 188
 189 static inline struct dnet_net_state *dnet_state_get(struct dnet_net_state *st)
 190 {
 191         atomic_inc(&st->refcnt);
 192         return st;
 193 }
 194 static inline void dnet_state_put(struct dnet_net_state *st)
 195 {
 196         /*
 197          * State can be NULL here when we just want to kick IO thread.
 198          */
 199         if (st && atomic_dec_and_test(&st->refcnt))
 200                 dnet_state_destroy(st);
 201 }
 202
 203 struct dnet_wait
 204 {
 205         pthread_cond_t          wait;
 206         pthread_mutex_t         wait_lock;
 207         int                     cond;
 208         int                     status;
 209
 210         void                    *ret;
 211         int                     size;
 212
 213         atomic_t                refcnt;
 214 };
 215
 216 #define dnet_wait_event(w, condition, wts)                                              \
 217 ({                                                                                      \
 218         int __err = 0;                                                                  \
 219         struct timespec __ts;                                                           \
 220         struct timeval __tv;                                                            \
 221         gettimeofday(&__tv, NULL);                                                      \
 222         __ts.tv_nsec = __tv.tv_usec * 1000 + (wts)->tv_nsec;                            \
 223         __ts.tv_sec = __tv.tv_sec + (wts)->tv_sec;                                              \
 224         pthread_mutex_lock(&(w)->wait_lock);                                            \
 225         while (!(condition) && !__err)                                                  \
 226                 __err = pthread_cond_timedwait(&(w)->wait, &(w)->wait_lock, &__ts);             \
 227         pthread_mutex_unlock(&(w)->wait_lock);                                          \
 228         -__err;                                                                         \
 229 })
 230
 231 #define dnet_wakeup(w, task)                                                            \
 232 ({                                                                                      \
 233         pthread_mutex_lock(&(w)->wait_lock);                                            \
 234         task;                                                                           \
 235         pthread_cond_broadcast(&(w)->wait);                                             \
 236         pthread_mutex_unlock(&(w)->wait_lock);                                          \
 237 })
 238
 239 struct dnet_wait *dnet_wait_alloc(int cond);
 240 void dnet_wait_destroy(struct dnet_wait *w);
 241
 242 static inline struct dnet_wait *dnet_wait_get(struct dnet_wait *w)
 243 {
 244         atomic_inc(&w->refcnt);
 245         return w;
 246 }
 247
 248 static inline void dnet_wait_put(struct dnet_wait *w)
 249 {
 250         if (atomic_dec_and_test(&w->refcnt))
 251                 dnet_wait_destroy(w);
 252 }
 253
 254 struct dnet_notify_bucket
 255 {
 256         struct list_head                notify_list;
 257         pthread_rwlock_t                notify_lock;
 258 };
 259
 260 int dnet_update_notify(struct dnet_net_state *st, struct dnet_cmd *cmd, void *data);
 261
 262 int dnet_notify_add(struct dnet_net_state *st, struct dnet_cmd *cmd);
 263 int dnet_notify_remove(struct dnet_net_state *st, struct dnet_cmd *cmd);
 264
 265 int dnet_notify_init(struct dnet_node *n);
 266 void dnet_notify_exit(struct dnet_node *n);
 267
 268 struct dnet_group
 269 {
 270         struct list_head        group_entry;
 271
 272         unsigned int            group_id;
 273
 274         struct list_head        state_list;
 275
 276         atomic_t                refcnt;
 277
 278         int                     id_num;
 279         struct dnet_state_id    *ids;
 280 };
 281
 282 static inline struct dnet_group *dnet_group_get(struct dnet_group *g)
 283 {
 284         atomic_inc(&g->refcnt);
 285         return g;
 286 }
 287
 288 void dnet_group_destroy(struct dnet_group *g);
 289 static inline void dnet_group_put(struct dnet_group *g)
 290 {
 291         if (g && atomic_dec_and_test(&g->refcnt))
 292                 dnet_group_destroy(g);
 293 }
 294
 295 struct dnet_transform
 296 {
 297         void                    *priv;
 298
 299         int                     (* transform)(void *priv, const void *src, uint64_t size,
 300                                         void *dst, unsigned int *dsize, unsigned int flags);
 301 };
 302
 303 int dnet_crypto_init(struct dnet_node *n, void *ns, int nsize);
 304 void dnet_crypto_cleanup(struct dnet_node *n);
 305
 306 struct dnet_net_io {
 307         int                     epoll_fd;
 308         pthread_t               tid;
 309         struct dnet_node        *n;
 310 };
 311
 312 struct dnet_work_io {
 313         int                     thread_index;
 314         int                     nonblocking;
 315         pthread_t               tid;
 316         struct dnet_node        *n;
 317 };
 318
 319 struct dnet_io {
 320         int                     need_exit;
 321
 322         int                     net_thread_num, net_thread_pos;
 323         struct dnet_net_io      *net;
 324
 325         pthread_mutex_t         recv_lock;
 326         struct list_head        nonblocking_recv_list;
 327         struct list_head        recv_list;
 328         pthread_cond_t          recv_wait;
 329
 330         int                     thread_num;
 331         int                     nonblocking_thread_num;
 332         struct dnet_work_io     *wio;
 333 };
 334
 335 int dnet_state_accept_process(struct dnet_net_state *st, struct epoll_event *ev);
 336 int dnet_state_net_process(struct dnet_net_state *st, struct epoll_event *ev);
 337 int dnet_io_init(struct dnet_node *n, struct dnet_config *cfg);
 338 void dnet_io_exit(struct dnet_node *n);
 339
 340 void dnet_io_req_free(struct dnet_io_req *r);
 341
 342 struct dnet_locks {
 343         int                     num;
 344         pthread_mutex_t         lock[0];
 345 };
 346
 347 void dnet_locks_destroy(struct dnet_node *n);
 348 int dnet_locks_init(struct dnet_node *n, int num);
 349 void dnet_oplock(struct dnet_node *n, struct dnet_id *key);
 350 void dnet_opunlock(struct dnet_node *n, struct dnet_id *key);
 351 int dnet_optrylock(struct dnet_node *n, struct dnet_id *key);
 352
 353 struct dnet_node
 354 {
 355         struct list_head        check_entry;
 356
 357         struct dnet_transform   transform;
 358
 359         pthread_mutex_t         group_lock;
 360         int                     group_num;
 361         int                     *groups;
 362
 363         int                     need_exit;
 364
 365         struct dnet_id          id;
 366
 367         int                     flags;
 368         int                     ro;
 369
 370         pthread_attr_t          attr;
 371
 372         struct dnet_addr        addr;
 373         int                     sock_type, proto, family;
 374
 375         pthread_mutex_t         state_lock;
 376         struct list_head        group_list;
 377
 378         /* hosts client states, i.e. those who didn't join network */
 379         struct list_head        empty_state_list;
 380
 381         /* hosts all states added to given node */
 382         struct list_head        storage_state_list;
 383
 384         atomic_t                trans;
 385
 386         struct dnet_net_state   *st;
 387
 388         int                     error;
 389
 390         struct dnet_log         *log;
 391
 392         struct dnet_wait        *wait;
 393         struct timespec         wait_ts;
 394
 395         struct dnet_io          *io;
 396
 397         int                     check_in_progress;
 398         long                    check_timeout;
 399         pthread_t               check_tid;
 400         long                    stall_count;
 401
 402         pthread_t               monitor_tid;
 403         int                     monitor_fd;
 404
 405         char                    *temp_meta_env;
 406
 407         struct dnet_backend_callbacks   *cb;
 408
 409         unsigned int            notify_hash_size;
 410         struct dnet_notify_bucket       *notify_hash;
 411
 412         pthread_mutex_t         reconnect_lock;
 413         struct list_head        reconnect_list;
 414
 415         struct dnet_lock        counters_lock;
 416         struct dnet_stat_count  counters[__DNET_CNTR_MAX];
 417
 418         int                     bg_ionice_class;
 419         int                     bg_ionice_prio;
 420         int                     removal_delay;
 421
 422         char                    cookie[DNET_AUTH_COOKIE_SIZE];
 423
 424         void                    *srw;
 425
 426         int                     server_prio;
 427         int                     client_prio;
 428
 429         struct dnet_locks       *locks;
 430 };
 431
 432 static inline int dnet_counter_init(struct dnet_node *n)
 433 {
 434         memset(&n->counters, 0, __DNET_CNTR_MAX * sizeof(struct dnet_stat_count));
 435         return dnet_lock_init(&n->counters_lock);
 436 }
 437
 438 static inline void dnet_counter_destroy(struct dnet_node *n)
 439 {
 440         return dnet_lock_destroy(&n->counters_lock);
 441 }
 442
 443 static inline void dnet_counter_inc(struct dnet_node *n, int counter, int err)
 444 {
 445         if (counter >= __DNET_CNTR_MAX)
 446                 counter = DNET_CNTR_UNKNOWN;
 447
 448         dnet_lock_lock(&n->counters_lock);
 449         if (!err)
 450                 n->counters[counter].count++;
 451         else
 452                 n->counters[counter].err++;
 453         dnet_lock_unlock(&n->counters_lock);
 454
 455         dnet_log(n, DNET_LOG_DSA, "Incrementing counter: %d, err: %d, value is: %llu %llu.\n",
 456                                 counter, err,
 457                                 (unsigned long long)n->counters[counter].count,
 458                                 (unsigned long long)n->counters[counter].err);
 459 }
 460
 461 static inline void dnet_counter_set(struct dnet_node *n, int counter, int err, int64_t val)
 462 {
 463         if (counter >= __DNET_CNTR_MAX)
 464                 counter = DNET_CNTR_UNKNOWN;
 465
 466         dnet_lock_lock(&n->counters_lock);
 467         if (!err)
 468                 n->counters[counter].count = val;
 469         else
 470                 n->counters[counter].err = val;
 471         dnet_lock_unlock(&n->counters_lock);
 472 }
 473
 474 static inline char *dnet_dump_node(struct dnet_node *n)
 475 {
 476         static char buf[128];
 477
 478         return dnet_server_convert_dnet_addr_raw(&n->addr, buf, sizeof(buf));
 479 }
 480
 481 struct dnet_trans;
 482 int dnet_process_cmd_raw(struct dnet_net_state *st, struct dnet_cmd *cmd, void *data);
 483 int dnet_process_recv(struct dnet_net_state *st, struct dnet_io_req *r);
 484
 485 int dnet_recv(struct dnet_net_state *st, void *data, unsigned int size);
 486 int dnet_sendfile(struct dnet_net_state *st, int fd, uint64_t *offset, uint64_t size);
 487
 488 int dnet_send_request(struct dnet_net_state *st, struct dnet_io_req *r);
 489
 490 struct dnet_config;
 491 int dnet_socket_create(struct dnet_node *n, struct dnet_config *cfg, struct dnet_addr *addr, int listening);
 492 int dnet_socket_create_addr(struct dnet_node *n, int sock_type, int proto, int family,
 493                 struct sockaddr *sa, unsigned int salen, int listening);
 494
 495 void dnet_set_sockopt(int s);
 496 void dnet_sock_close(int s);
 497
 498 enum dnet_join_state {
 499         DNET_JOIN = 1,                  /* Node joined the network */
 500         DNET_WANT_RECONNECT,            /* State must be reconnected, when remote peer failed */
 501 };
 502
 503 int dnet_state_join_nolock(struct dnet_net_state *st);
 504
 505 struct dnet_trans
 506 {
 507         struct rb_node                  trans_entry;
 508         struct list_head                trans_list_entry;
 509
 510         struct timeval                  time, start;
 511
 512         struct dnet_net_state           *orig; /* only for forward */
 513
 514         struct dnet_net_state           *st;
 515         uint64_t                        trans, rcv_trans;
 516         struct dnet_cmd                 cmd;
 517
 518         atomic_t                        refcnt;
 519
 520         int                             command; /* main command this transaction carries */
 521
 522         void                            *priv;
 523         int                             (* complete)(struct dnet_net_state *st,
 524                                                      struct dnet_cmd *cmd,
 525                                                      void *priv);
 526 };
 527
 528 void dnet_trans_destroy(struct dnet_trans *t);
 529 struct dnet_trans *dnet_trans_alloc(struct dnet_node *n, uint64_t size);
 530 int dnet_trans_alloc_send_state(struct dnet_net_state *st, struct dnet_trans_control *ctl);
 531 int dnet_trans_timer_setup(struct dnet_trans *t);
 532
 533 static inline struct dnet_trans *dnet_trans_get(struct dnet_trans *t)
 534 {
 535         atomic_inc(&t->refcnt);
 536         return t;
 537 }
 538
 539 static inline void dnet_trans_put(struct dnet_trans *t)
 540 {
 541         if (t && atomic_dec_and_test(&t->refcnt))
 542                 dnet_trans_destroy(t);
 543 }
 544
 545 int dnet_trans_insert_nolock(struct rb_root *root, struct dnet_trans *a);
 546 void dnet_trans_remove(struct dnet_trans *t);
 547 void dnet_trans_remove_nolock(struct rb_root *root, struct dnet_trans *t);
 548 struct dnet_trans *dnet_trans_search(struct rb_root *root, uint64_t trans);
 549
 550 int dnet_trans_send(struct dnet_trans *t, struct dnet_io_req *req);
 551
 552 int dnet_trans_create_send_all(struct dnet_node *n, struct dnet_io_control *ctl);
 553
 554 int dnet_recv_list(struct dnet_node *n, struct dnet_net_state *st);
 555
 556 ssize_t dnet_send_fd(struct dnet_net_state *st, void *header, uint64_t hsize,
 557                 int fd, uint64_t offset, uint64_t dsize, int close_on_exit);
 558 ssize_t dnet_send_data(struct dnet_net_state *st, void *header, uint64_t hsize, void *data, uint64_t dsize);
 559 ssize_t dnet_send(struct dnet_net_state *st, void *data, uint64_t size);
 560 ssize_t dnet_send_nolock(struct dnet_net_state *st, void *data, uint64_t size);
 561
 562 struct dnet_io_completion
 563 {
 564         struct dnet_wait        *wait;
 565         char                    *file;
 566         uint64_t                offset;
 567 };
 568
 569 struct dnet_addr_storage
 570 {
 571         int                             reconnect_time, reconnect_time_max;
 572         struct list_head                reconnect_entry;
 573         struct dnet_addr                addr;
 574         unsigned int                    __join_state;
 575 };
 576
 577 /*
 578  * Returns true if t1 is before than t2.
 579  */
 580 static inline int dnet_time_before(struct timespec *t1, struct timespec *t2)
 581 {
 582         if ((long)(t1->tv_sec - t2->tv_sec) < 0)
 583                 return 1;
 584
 585         if ((long)(t2->tv_sec - t1->tv_sec) < 0)
 586                 return 0;
 587
 588         return ((long)(t1->tv_nsec - t2->tv_nsec) < 0);
 589 }
 590 #define dnet_time_after(t2, t1)         dnet_time_before(t1, t2)
 591
 592 int dnet_check_thread_start(struct dnet_node *n);
 593 void dnet_check_thread_stop(struct dnet_node *n);
 594 int dnet_try_reconnect(struct dnet_node *n);
 595
 596 #define DNET_CHECK_TYPE_COPIES_HISTORY          1
 597 #define DNET_CHECK_TYPE_COPIES_FULL             2
 598 #define DNET_CHECK_TYPE_MERGE                   3
 599 #define DNET_CHECK_TYPE_DELETE                  4
 600
 601 #define DNET_BULK_IDS_SIZE                      1000
 602 #define DNET_BULK_CHECK_PING                    100
 603 #define DNET_BULK_STATES_ALLOC_STEP             10
 604 #define DNET_BULK_META_UPD_SIZE                 1000
 605
 606 struct dnet_bulk_id
 607 {
 608         struct dnet_raw_id id;
 609         struct dnet_meta_update last_update;
 610 } __attribute__ ((packed));
 611
 612 struct dnet_bulk_state
 613 {
 614         struct dnet_addr addr;
 615         pthread_mutex_t state_lock;
 616         int num;
 617         struct dnet_bulk_id *ids;
 618 };
 619
 620 struct dnet_bulk_array
 621 {
 622         int num;
 623         struct dnet_bulk_state *states;
 624         atomic_t refcnt;
 625 };
 626
 627 static inline int dnet_compare_bulk_state(const void *k1, const void *k2)
 628 {
 629         const struct dnet_bulk_state *st1 = (const struct dnet_bulk_state *)k1;
 630         const struct dnet_bulk_state *st2 = (const struct dnet_bulk_state *)k2;
 631
 632         if (st1->addr.addr_len > st2->addr.addr_len)
 633                 return 1;
 634         if (st1->addr.addr_len < st2->addr.addr_len)
 635                 return -1;
 636         return memcmp(st1->addr.addr, st2->addr.addr, st1->addr.addr_len);
 637 }
 638
 639 struct dnet_check_temp_db {
 640         struct eblob_backend *b;
 641         struct eblob_log log;
 642         atomic_t refcnt;
 643 };
 644
 645 struct dnet_check_params {
 646         struct dnet_check_temp_db *db;
 647         int group_num;
 648         int *groups;
 649 };
 650
 651
 652 static inline struct dnet_check_temp_db * dnet_check_temp_db_get(struct dnet_check_temp_db *db) {
 653         atomic_inc(&db->refcnt);
 654         return db;
 655 }
 656
 657 static inline void dnet_check_temp_db_put(struct dnet_check_temp_db *db) {
 658         if (atomic_dec_and_test(&db->refcnt)) {
 659                 eblob_remove_blobs(db->b);
 660                 eblob_cleanup(db->b);
 661                 free(db);
 662         }
 663 }
 664
 665 int dnet_check(struct dnet_node *n, struct dnet_meta_container *mc, struct dnet_bulk_array *bulk_array, int check_copies, struct dnet_check_params *params);
 666 int dnet_db_list(struct dnet_net_state *st, struct dnet_cmd *cmd);
 667 int dnet_cmd_bulk_check(struct dnet_net_state *orig, struct dnet_cmd *cmd, void *data);
 668 int dnet_request_bulk_check(struct dnet_node *n, struct dnet_bulk_state *state, struct dnet_check_params *params);
 669
 670 struct dnet_meta_update * dnet_get_meta_update(struct dnet_node *n, struct dnet_meta_container *mc,
 671                 struct dnet_meta_update *meta_update);
 672
 673 int dnet_update_ts_metadata(struct eblob_backend *b, struct dnet_raw_id *id, uint64_t flags_set, uint64_t flags_clear);
 674
 675 int dnet_process_meta(struct dnet_net_state *st, struct dnet_cmd *cmd, struct dnet_io_attr *io);
 676 void dnet_convert_metadata(struct dnet_node *n __unused, void *data, int size);
 677
 678 void dnet_monitor_exit(struct dnet_node *n);
 679 int dnet_monitor_init(struct dnet_node *n, struct dnet_config *cfg);
 680
 681 int dnet_set_name(char *name);
 682 int dnet_ioprio_set(long pid, int class_id, int prio);
 683 int dnet_ioprio_get(long pid);
 684
 685 struct dnet_map_fd {
 686         int                     fd;
 687         uint64_t                offset, size;
 688
 689         void                    *data;
 690
 691         uint64_t                mapped_size;
 692         void                    *mapped_data;
 693 };
 694
 695 int dnet_data_map(struct dnet_map_fd *map);
 696 void dnet_data_unmap(struct dnet_map_fd *map);
 697
 698 void *dnet_read_data_wait_raw(struct dnet_node *n, struct dnet_id *id, struct dnet_io_attr *io, int cmd, uint64_t cflags, int *errp);
 699
 700 int dnet_srw_init(struct dnet_node *n, struct dnet_config *cfg);
 701 void dnet_srw_cleanup(struct dnet_node *n);
 702 int dnet_cmd_exec_raw(struct dnet_net_state *st, struct dnet_cmd *cmd, struct sph *header, const void *data);
 703
 704 #ifdef __cplusplus
 705 }
 706 #endif
 707
 708 #endif /* __DNET_ELLIPTICS_H */