1#include <stdio.h> 2#include <stdlib.h> 3#include <stdarg.h> 4#include <unistd.h> 5#include <limits.h> 6#include <errno.h> 7#include <sys/poll.h> 8#include <sys/types.h> 9#include <sys/wait.h> 10#include <sys/socket.h> 11#include <sys/stat.h> 12#include <sys/un.h> 13#include <sys/uio.h> 14#include <netinet/in.h> 15#include <arpa/inet.h> 16#include <netdb.h> 17#include <syslog.h> 18#include <signal.h> 19#ifdef CONFIG_ZLIB 20#include <zlib.h> 21#endif 22 23#include "fio.h" 24#include "options.h" 25#include "server.h" 26#include "crc/crc16.h" 27#include "lib/ieee754.h" 28#include "verify.h" 29#include "smalloc.h" 30 31int fio_net_port = FIO_NET_PORT; 32 33int exit_backend = 0; 34 35enum { 36 SK_F_FREE = 1, 37 SK_F_COPY = 2, 38 SK_F_SIMPLE = 4, 39 SK_F_VEC = 8, 40 SK_F_INLINE = 16, 41}; 42 43struct sk_entry { 44 struct flist_head list; /* link on sk_out->list */ 45 int flags; /* SK_F_* */ 46 int opcode; /* Actual command fields */ 47 void *buf; 48 off_t size; 49 uint64_t tag; 50 struct flist_head next; /* Other sk_entry's, if linked command */ 51}; 52 53static char *fio_server_arg; 54static char *bind_sock; 55static struct sockaddr_in saddr_in; 56static struct sockaddr_in6 saddr_in6; 57static int use_ipv6; 58#ifdef CONFIG_ZLIB 59static unsigned int has_zlib = 1; 60#else 61static unsigned int has_zlib = 0; 62#endif 63static unsigned int use_zlib; 64static char me[128]; 65 66static pthread_key_t sk_out_key; 67 68struct fio_fork_item { 69 struct flist_head list; 70 int exitval; 71 int signal; 72 int exited; 73 pid_t pid; 74}; 75 76struct cmd_reply { 77 struct fio_mutex lock; 78 void *data; 79 size_t size; 80 int error; 81}; 82 83static const char *fio_server_ops[FIO_NET_CMD_NR] = { 84 "", 85 "QUIT", 86 "EXIT", 87 "JOB", 88 "JOBLINE", 89 "TEXT", 90 "TS", 91 "GS", 92 "SEND_ETA", 93 "ETA", 94 "PROBE", 95 "START", 96 "STOP", 97 "DISK_UTIL", 98 "SERVER_START", 99 "ADD_JOB", 100 "RUN", 101 "IOLOG", 102 "UPDATE_JOB", 103 "LOAD_FILE", 104 "VTRIGGER", 105 "SENDFILE", 106 "JOB_OPT", 107}; 108 109static void sk_lock(struct sk_out *sk_out) 110{ 111 fio_mutex_down(&sk_out->lock); 112} 113 114static void sk_unlock(struct sk_out *sk_out) 115{ 116 fio_mutex_up(&sk_out->lock); 117} 118 119void sk_out_assign(struct sk_out *sk_out) 120{ 121 if (!sk_out) 122 return; 123 124 sk_lock(sk_out); 125 sk_out->refs++; 126 sk_unlock(sk_out); 127 pthread_setspecific(sk_out_key, sk_out); 128} 129 130static void sk_out_free(struct sk_out *sk_out) 131{ 132 __fio_mutex_remove(&sk_out->lock); 133 __fio_mutex_remove(&sk_out->wait); 134 __fio_mutex_remove(&sk_out->xmit); 135 sfree(sk_out); 136} 137 138static int __sk_out_drop(struct sk_out *sk_out) 139{ 140 if (sk_out) { 141 int refs; 142 143 sk_lock(sk_out); 144 assert(sk_out->refs != 0); 145 refs = --sk_out->refs; 146 sk_unlock(sk_out); 147 148 if (!refs) { 149 sk_out_free(sk_out); 150 pthread_setspecific(sk_out_key, NULL); 151 return 0; 152 } 153 } 154 155 return 1; 156} 157 158void sk_out_drop(void) 159{ 160 struct sk_out *sk_out; 161 162 sk_out = pthread_getspecific(sk_out_key); 163 __sk_out_drop(sk_out); 164} 165 166static void __fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode, 167 uint32_t pdu_len, uint64_t tag) 168{ 169 memset(cmd, 0, sizeof(*cmd)); 170 171 cmd->version = __cpu_to_le16(FIO_SERVER_VER); 172 cmd->opcode = cpu_to_le16(opcode); 173 cmd->tag = cpu_to_le64(tag); 174 cmd->pdu_len = cpu_to_le32(pdu_len); 175} 176 177 178static void fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode, 179 const void *pdu, uint32_t pdu_len, uint64_t tag) 180{ 181 __fio_init_net_cmd(cmd, opcode, pdu_len, tag); 182 183 if (pdu) 184 memcpy(&cmd->payload, pdu, pdu_len); 185} 186 187const char *fio_server_op(unsigned int op) 188{ 189 static char buf[32]; 190 191 if (op < FIO_NET_CMD_NR) 192 return fio_server_ops[op]; 193 194 sprintf(buf, "UNKNOWN/%d", op); 195 return buf; 196} 197 198static ssize_t iov_total_len(const struct iovec *iov, int count) 199{ 200 ssize_t ret = 0; 201 202 while (count--) { 203 ret += iov->iov_len; 204 iov++; 205 } 206 207 return ret; 208} 209 210static int fio_sendv_data(int sk, struct iovec *iov, int count) 211{ 212 ssize_t total_len = iov_total_len(iov, count); 213 ssize_t ret; 214 215 do { 216 ret = writev(sk, iov, count); 217 if (ret > 0) { 218 total_len -= ret; 219 if (!total_len) 220 break; 221 222 while (ret) { 223 if (ret >= iov->iov_len) { 224 ret -= iov->iov_len; 225 iov++; 226 continue; 227 } 228 iov->iov_base += ret; 229 iov->iov_len -= ret; 230 ret = 0; 231 } 232 } else if (!ret) 233 break; 234 else if (errno == EAGAIN || errno == EINTR) 235 continue; 236 else 237 break; 238 } while (!exit_backend); 239 240 if (!total_len) 241 return 0; 242 243 return 1; 244} 245 246static int fio_send_data(int sk, const void *p, unsigned int len) 247{ 248 struct iovec iov = { .iov_base = (void *) p, .iov_len = len }; 249 250 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_FRAGMENT_PDU); 251 252 return fio_sendv_data(sk, &iov, 1); 253} 254 255static int fio_recv_data(int sk, void *p, unsigned int len, bool wait) 256{ 257 int flags; 258 259 if (wait) 260 flags = MSG_WAITALL; 261 else 262 flags = OS_MSG_DONTWAIT; 263 264 do { 265 int ret = recv(sk, p, len, flags); 266 267 if (ret > 0) { 268 len -= ret; 269 if (!len) 270 break; 271 p += ret; 272 continue; 273 } else if (!ret) 274 break; 275 else if (errno == EAGAIN || errno == EINTR) { 276 if (wait) 277 continue; 278 break; 279 } else 280 break; 281 } while (!exit_backend); 282 283 if (!len) 284 return 0; 285 286 return -1; 287} 288 289static int verify_convert_cmd(struct fio_net_cmd *cmd) 290{ 291 uint16_t crc; 292 293 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16); 294 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16); 295 296 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ); 297 if (crc != cmd->cmd_crc16) { 298 log_err("fio: server bad crc on command (got %x, wanted %x)\n", 299 cmd->cmd_crc16, crc); 300 return 1; 301 } 302 303 cmd->version = le16_to_cpu(cmd->version); 304 cmd->opcode = le16_to_cpu(cmd->opcode); 305 cmd->flags = le32_to_cpu(cmd->flags); 306 cmd->tag = le64_to_cpu(cmd->tag); 307 cmd->pdu_len = le32_to_cpu(cmd->pdu_len); 308 309 switch (cmd->version) { 310 case FIO_SERVER_VER: 311 break; 312 default: 313 log_err("fio: bad server cmd version %d\n", cmd->version); 314 return 1; 315 } 316 317 if (cmd->pdu_len > FIO_SERVER_MAX_FRAGMENT_PDU) { 318 log_err("fio: command payload too large: %u\n", cmd->pdu_len); 319 return 1; 320 } 321 322 return 0; 323} 324 325/* 326 * Read (and defragment, if necessary) incoming commands 327 */ 328struct fio_net_cmd *fio_net_recv_cmd(int sk, bool wait) 329{ 330 struct fio_net_cmd cmd, *tmp, *cmdret = NULL; 331 size_t cmd_size = 0, pdu_offset = 0; 332 uint16_t crc; 333 int ret, first = 1; 334 void *pdu = NULL; 335 336 do { 337 ret = fio_recv_data(sk, &cmd, sizeof(cmd), wait); 338 if (ret) 339 break; 340 341 /* We have a command, verify it and swap if need be */ 342 ret = verify_convert_cmd(&cmd); 343 if (ret) 344 break; 345 346 if (first) { 347 /* if this is text, add room for \0 at the end */ 348 cmd_size = sizeof(cmd) + cmd.pdu_len + 1; 349 assert(!cmdret); 350 } else 351 cmd_size += cmd.pdu_len; 352 353 if (cmd_size / 1024 > FIO_SERVER_MAX_CMD_MB * 1024) { 354 log_err("fio: cmd+pdu too large (%llu)\n", (unsigned long long) cmd_size); 355 ret = 1; 356 break; 357 } 358 359 tmp = realloc(cmdret, cmd_size); 360 if (!tmp) { 361 log_err("fio: server failed allocating cmd\n"); 362 ret = 1; 363 break; 364 } 365 cmdret = tmp; 366 367 if (first) 368 memcpy(cmdret, &cmd, sizeof(cmd)); 369 else if (cmdret->opcode != cmd.opcode) { 370 log_err("fio: fragment opcode mismatch (%d != %d)\n", 371 cmdret->opcode, cmd.opcode); 372 ret = 1; 373 break; 374 } 375 376 if (!cmd.pdu_len) 377 break; 378 379 /* There's payload, get it */ 380 pdu = (void *) cmdret->payload + pdu_offset; 381 ret = fio_recv_data(sk, pdu, cmd.pdu_len, wait); 382 if (ret) 383 break; 384 385 /* Verify payload crc */ 386 crc = fio_crc16(pdu, cmd.pdu_len); 387 if (crc != cmd.pdu_crc16) { 388 log_err("fio: server bad crc on payload "); 389 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc); 390 ret = 1; 391 break; 392 } 393 394 pdu_offset += cmd.pdu_len; 395 if (!first) 396 cmdret->pdu_len += cmd.pdu_len; 397 first = 0; 398 } while (cmd.flags & FIO_NET_CMD_F_MORE); 399 400 if (ret) { 401 free(cmdret); 402 cmdret = NULL; 403 } else if (cmdret) { 404 /* zero-terminate text input */ 405 if (cmdret->pdu_len) { 406 if (cmdret->opcode == FIO_NET_CMD_TEXT) { 407 struct cmd_text_pdu *__pdu = (struct cmd_text_pdu *) cmdret->payload; 408 char *buf = (char *) __pdu->buf; 409 410 buf[__pdu->buf_len] = '\0'; 411 } else if (cmdret->opcode == FIO_NET_CMD_JOB) { 412 struct cmd_job_pdu *__pdu = (struct cmd_job_pdu *) cmdret->payload; 413 char *buf = (char *) __pdu->buf; 414 int len = le32_to_cpu(__pdu->buf_len); 415 416 buf[len] = '\0'; 417 } 418 } 419 420 /* frag flag is internal */ 421 cmdret->flags &= ~FIO_NET_CMD_F_MORE; 422 } 423 424 return cmdret; 425} 426 427static void add_reply(uint64_t tag, struct flist_head *list) 428{ 429 struct fio_net_cmd_reply *reply; 430 431 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag; 432 flist_add_tail(&reply->list, list); 433} 434 435static uint64_t alloc_reply(uint64_t tag, uint16_t opcode) 436{ 437 struct fio_net_cmd_reply *reply; 438 439 reply = calloc(1, sizeof(*reply)); 440 INIT_FLIST_HEAD(&reply->list); 441 fio_gettime(&reply->tv, NULL); 442 reply->saved_tag = tag; 443 reply->opcode = opcode; 444 445 return (uintptr_t) reply; 446} 447 448static void free_reply(uint64_t tag) 449{ 450 struct fio_net_cmd_reply *reply; 451 452 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag; 453 free(reply); 454} 455 456static void fio_net_cmd_crc_pdu(struct fio_net_cmd *cmd, const void *pdu) 457{ 458 uint32_t pdu_len; 459 460 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ)); 461 462 pdu_len = le32_to_cpu(cmd->pdu_len); 463 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(pdu, pdu_len)); 464} 465 466static void fio_net_cmd_crc(struct fio_net_cmd *cmd) 467{ 468 fio_net_cmd_crc_pdu(cmd, cmd->payload); 469} 470 471int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size, 472 uint64_t *tagptr, struct flist_head *list) 473{ 474 struct fio_net_cmd *cmd = NULL; 475 size_t this_len, cur_len = 0; 476 uint64_t tag; 477 int ret; 478 479 if (list) { 480 assert(tagptr); 481 tag = *tagptr = alloc_reply(*tagptr, opcode); 482 } else 483 tag = tagptr ? *tagptr : 0; 484 485 do { 486 this_len = size; 487 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU) 488 this_len = FIO_SERVER_MAX_FRAGMENT_PDU; 489 490 if (!cmd || cur_len < sizeof(*cmd) + this_len) { 491 if (cmd) 492 free(cmd); 493 494 cur_len = sizeof(*cmd) + this_len; 495 cmd = malloc(cur_len); 496 } 497 498 fio_init_net_cmd(cmd, opcode, buf, this_len, tag); 499 500 if (this_len < size) 501 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE); 502 503 fio_net_cmd_crc(cmd); 504 505 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len); 506 size -= this_len; 507 buf += this_len; 508 } while (!ret && size); 509 510 if (list) { 511 if (ret) 512 free_reply(tag); 513 else 514 add_reply(tag, list); 515 } 516 517 if (cmd) 518 free(cmd); 519 520 return ret; 521} 522 523static struct sk_entry *fio_net_prep_cmd(uint16_t opcode, void *buf, 524 size_t size, uint64_t *tagptr, 525 int flags) 526{ 527 struct sk_entry *entry; 528 529 entry = smalloc(sizeof(*entry)); 530 INIT_FLIST_HEAD(&entry->next); 531 entry->opcode = opcode; 532 if (flags & SK_F_COPY) { 533 entry->buf = smalloc(size); 534 memcpy(entry->buf, buf, size); 535 } else 536 entry->buf = buf; 537 538 entry->size = size; 539 if (tagptr) 540 entry->tag = *tagptr; 541 else 542 entry->tag = 0; 543 entry->flags = flags; 544 return entry; 545} 546 547static int handle_sk_entry(struct sk_out *sk_out, struct sk_entry *entry); 548 549static void fio_net_queue_entry(struct sk_entry *entry) 550{ 551 struct sk_out *sk_out = pthread_getspecific(sk_out_key); 552 553 if (entry->flags & SK_F_INLINE) 554 handle_sk_entry(sk_out, entry); 555 else { 556 sk_lock(sk_out); 557 flist_add_tail(&entry->list, &sk_out->list); 558 sk_unlock(sk_out); 559 560 fio_mutex_up(&sk_out->wait); 561 } 562} 563 564static int fio_net_queue_cmd(uint16_t opcode, void *buf, off_t size, 565 uint64_t *tagptr, int flags) 566{ 567 struct sk_entry *entry; 568 569 entry = fio_net_prep_cmd(opcode, buf, size, tagptr, flags); 570 if (entry) { 571 fio_net_queue_entry(entry); 572 return 0; 573 } 574 575 return 1; 576} 577 578static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag) 579{ 580 struct fio_net_cmd cmd; 581 582 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag); 583 fio_net_cmd_crc(&cmd); 584 585 return fio_send_data(sk, &cmd, sizeof(cmd)); 586} 587 588/* 589 * If 'list' is non-NULL, then allocate and store the sent command for 590 * later verification. 591 */ 592int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag, 593 struct flist_head *list) 594{ 595 int ret; 596 597 if (list) 598 tag = alloc_reply(tag, opcode); 599 600 ret = fio_net_send_simple_stack_cmd(sk, opcode, tag); 601 if (ret) { 602 if (list) 603 free_reply(tag); 604 605 return ret; 606 } 607 608 if (list) 609 add_reply(tag, list); 610 611 return 0; 612} 613 614static int fio_net_queue_quit(void) 615{ 616 dprint(FD_NET, "server: sending quit\n"); 617 618 return fio_net_queue_cmd(FIO_NET_CMD_QUIT, NULL, 0, NULL, SK_F_SIMPLE); 619} 620 621int fio_net_send_quit(int sk) 622{ 623 dprint(FD_NET, "server: sending quit\n"); 624 625 return fio_net_send_simple_cmd(sk, FIO_NET_CMD_QUIT, 0, NULL); 626} 627 628static int fio_net_send_ack(struct fio_net_cmd *cmd, int error, int signal) 629{ 630 struct cmd_end_pdu epdu; 631 uint64_t tag = 0; 632 633 if (cmd) 634 tag = cmd->tag; 635 636 epdu.error = __cpu_to_le32(error); 637 epdu.signal = __cpu_to_le32(signal); 638 return fio_net_queue_cmd(FIO_NET_CMD_STOP, &epdu, sizeof(epdu), &tag, SK_F_COPY); 639} 640 641static int fio_net_queue_stop(int error, int signal) 642{ 643 dprint(FD_NET, "server: sending stop (%d, %d)\n", error, signal); 644 return fio_net_send_ack(NULL, error, signal); 645} 646 647static void fio_server_add_fork_item(pid_t pid, struct flist_head *list) 648{ 649 struct fio_fork_item *ffi; 650 651 ffi = malloc(sizeof(*ffi)); 652 ffi->exitval = 0; 653 ffi->signal = 0; 654 ffi->exited = 0; 655 ffi->pid = pid; 656 flist_add_tail(&ffi->list, list); 657} 658 659static void fio_server_add_conn_pid(struct flist_head *conn_list, pid_t pid) 660{ 661 dprint(FD_NET, "server: forked off connection job (pid=%u)\n", (int) pid); 662 fio_server_add_fork_item(pid, conn_list); 663} 664 665static void fio_server_add_job_pid(struct flist_head *job_list, pid_t pid) 666{ 667 dprint(FD_NET, "server: forked off job job (pid=%u)\n", (int) pid); 668 fio_server_add_fork_item(pid, job_list); 669} 670 671static void fio_server_check_fork_item(struct fio_fork_item *ffi) 672{ 673 int ret, status; 674 675 ret = waitpid(ffi->pid, &status, WNOHANG); 676 if (ret < 0) { 677 if (errno == ECHILD) { 678 log_err("fio: connection pid %u disappeared\n", (int) ffi->pid); 679 ffi->exited = 1; 680 } else 681 log_err("fio: waitpid: %s\n", strerror(errno)); 682 } else if (ret == ffi->pid) { 683 if (WIFSIGNALED(status)) { 684 ffi->signal = WTERMSIG(status); 685 ffi->exited = 1; 686 } 687 if (WIFEXITED(status)) { 688 if (WEXITSTATUS(status)) 689 ffi->exitval = WEXITSTATUS(status); 690 ffi->exited = 1; 691 } 692 } 693} 694 695static void fio_server_fork_item_done(struct fio_fork_item *ffi, bool stop) 696{ 697 dprint(FD_NET, "pid %u exited, sig=%u, exitval=%d\n", (int) ffi->pid, ffi->signal, ffi->exitval); 698 699 /* 700 * Fold STOP and QUIT... 701 */ 702 if (stop) { 703 fio_net_queue_stop(ffi->exitval, ffi->signal); 704 fio_net_queue_quit(); 705 } 706 707 flist_del(&ffi->list); 708 free(ffi); 709} 710 711static void fio_server_check_fork_items(struct flist_head *list, bool stop) 712{ 713 struct flist_head *entry, *tmp; 714 struct fio_fork_item *ffi; 715 716 flist_for_each_safe(entry, tmp, list) { 717 ffi = flist_entry(entry, struct fio_fork_item, list); 718 719 fio_server_check_fork_item(ffi); 720 721 if (ffi->exited) 722 fio_server_fork_item_done(ffi, stop); 723 } 724} 725 726static void fio_server_check_jobs(struct flist_head *job_list) 727{ 728 fio_server_check_fork_items(job_list, true); 729} 730 731static void fio_server_check_conns(struct flist_head *conn_list) 732{ 733 fio_server_check_fork_items(conn_list, false); 734} 735 736static int handle_load_file_cmd(struct fio_net_cmd *cmd) 737{ 738 struct cmd_load_file_pdu *pdu = (struct cmd_load_file_pdu *) cmd->payload; 739 void *file_name = pdu->file; 740 struct cmd_start_pdu spdu; 741 742 dprint(FD_NET, "server: loading local file %s\n", (char *) file_name); 743 744 pdu->name_len = le16_to_cpu(pdu->name_len); 745 pdu->client_type = le16_to_cpu(pdu->client_type); 746 747 if (parse_jobs_ini(file_name, 0, 0, pdu->client_type)) { 748 fio_net_queue_quit(); 749 return -1; 750 } 751 752 spdu.jobs = cpu_to_le32(thread_number); 753 spdu.stat_outputs = cpu_to_le32(stat_number); 754 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY); 755 return 0; 756} 757 758static int handle_run_cmd(struct sk_out *sk_out, struct flist_head *job_list, 759 struct fio_net_cmd *cmd) 760{ 761 pid_t pid; 762 int ret; 763 764 sk_out_assign(sk_out); 765 766 fio_time_init(); 767 set_genesis_time(); 768 769 pid = fork(); 770 if (pid) { 771 fio_server_add_job_pid(job_list, pid); 772 return 0; 773 } 774 775 ret = fio_backend(sk_out); 776 free_threads_shm(); 777 sk_out_drop(); 778 _exit(ret); 779} 780 781static int handle_job_cmd(struct fio_net_cmd *cmd) 782{ 783 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmd->payload; 784 void *buf = pdu->buf; 785 struct cmd_start_pdu spdu; 786 787 pdu->buf_len = le32_to_cpu(pdu->buf_len); 788 pdu->client_type = le32_to_cpu(pdu->client_type); 789 790 if (parse_jobs_ini(buf, 1, 0, pdu->client_type)) { 791 fio_net_queue_quit(); 792 return -1; 793 } 794 795 spdu.jobs = cpu_to_le32(thread_number); 796 spdu.stat_outputs = cpu_to_le32(stat_number); 797 798 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY); 799 return 0; 800} 801 802static int handle_jobline_cmd(struct fio_net_cmd *cmd) 803{ 804 void *pdu = cmd->payload; 805 struct cmd_single_line_pdu *cslp; 806 struct cmd_line_pdu *clp; 807 unsigned long offset; 808 struct cmd_start_pdu spdu; 809 char **argv; 810 int i; 811 812 clp = pdu; 813 clp->lines = le16_to_cpu(clp->lines); 814 clp->client_type = le16_to_cpu(clp->client_type); 815 argv = malloc(clp->lines * sizeof(char *)); 816 offset = sizeof(*clp); 817 818 dprint(FD_NET, "server: %d command line args\n", clp->lines); 819 820 for (i = 0; i < clp->lines; i++) { 821 cslp = pdu + offset; 822 argv[i] = (char *) cslp->text; 823 824 offset += sizeof(*cslp) + le16_to_cpu(cslp->len); 825 dprint(FD_NET, "server: %d: %s\n", i, argv[i]); 826 } 827 828 if (parse_cmd_line(clp->lines, argv, clp->client_type)) { 829 fio_net_queue_quit(); 830 free(argv); 831 return -1; 832 } 833 834 free(argv); 835 836 spdu.jobs = cpu_to_le32(thread_number); 837 spdu.stat_outputs = cpu_to_le32(stat_number); 838 839 fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY); 840 return 0; 841} 842 843static int handle_probe_cmd(struct fio_net_cmd *cmd) 844{ 845 struct cmd_client_probe_pdu *pdu = (struct cmd_client_probe_pdu *) cmd->payload; 846 struct cmd_probe_reply_pdu probe; 847 uint64_t tag = cmd->tag; 848 849 dprint(FD_NET, "server: sending probe reply\n"); 850 851 strcpy(me, (char *) pdu->server); 852 853 memset(&probe, 0, sizeof(probe)); 854 gethostname((char *) probe.hostname, sizeof(probe.hostname)); 855#ifdef CONFIG_BIG_ENDIAN 856 probe.bigendian = 1; 857#endif 858 strncpy((char *) probe.fio_version, fio_version_string, sizeof(probe.fio_version)); 859 860 probe.os = FIO_OS; 861 probe.arch = FIO_ARCH; 862 probe.bpp = sizeof(void *); 863 probe.cpus = __cpu_to_le32(cpus_online()); 864 865 /* 866 * If the client supports compression and we do too, then enable it 867 */ 868 if (has_zlib && le64_to_cpu(pdu->flags) & FIO_PROBE_FLAG_ZLIB) { 869 probe.flags = __cpu_to_le64(FIO_PROBE_FLAG_ZLIB); 870 use_zlib = 1; 871 } else { 872 probe.flags = 0; 873 use_zlib = 0; 874 } 875 876 return fio_net_queue_cmd(FIO_NET_CMD_PROBE, &probe, sizeof(probe), &tag, SK_F_COPY); 877} 878 879static int handle_send_eta_cmd(struct fio_net_cmd *cmd) 880{ 881 struct jobs_eta *je; 882 uint64_t tag = cmd->tag; 883 size_t size; 884 int i; 885 886 dprint(FD_NET, "server sending status\n"); 887 888 /* 889 * Fake ETA return if we don't have a local one, otherwise the client 890 * will end up timing out waiting for a response to the ETA request 891 */ 892 je = get_jobs_eta(true, &size); 893 if (!je) { 894 size = sizeof(*je); 895 je = calloc(1, size); 896 } else { 897 je->nr_running = cpu_to_le32(je->nr_running); 898 je->nr_ramp = cpu_to_le32(je->nr_ramp); 899 je->nr_pending = cpu_to_le32(je->nr_pending); 900 je->nr_setting_up = cpu_to_le32(je->nr_setting_up); 901 je->files_open = cpu_to_le32(je->files_open); 902 903 for (i = 0; i < DDIR_RWDIR_CNT; i++) { 904 je->m_rate[i] = cpu_to_le64(je->m_rate[i]); 905 je->t_rate[i] = cpu_to_le64(je->t_rate[i]); 906 je->m_iops[i] = cpu_to_le32(je->m_iops[i]); 907 je->t_iops[i] = cpu_to_le32(je->t_iops[i]); 908 je->rate[i] = cpu_to_le64(je->rate[i]); 909 je->iops[i] = cpu_to_le32(je->iops[i]); 910 } 911 912 je->elapsed_sec = cpu_to_le64(je->elapsed_sec); 913 je->eta_sec = cpu_to_le64(je->eta_sec); 914 je->nr_threads = cpu_to_le32(je->nr_threads); 915 je->is_pow2 = cpu_to_le32(je->is_pow2); 916 je->unit_base = cpu_to_le32(je->unit_base); 917 } 918 919 fio_net_queue_cmd(FIO_NET_CMD_ETA, je, size, &tag, SK_F_FREE); 920 return 0; 921} 922 923static int send_update_job_reply(uint64_t __tag, int error) 924{ 925 uint64_t tag = __tag; 926 uint32_t pdu_error; 927 928 pdu_error = __cpu_to_le32(error); 929 return fio_net_queue_cmd(FIO_NET_CMD_UPDATE_JOB, &pdu_error, sizeof(pdu_error), &tag, SK_F_COPY); 930} 931 932static int handle_update_job_cmd(struct fio_net_cmd *cmd) 933{ 934 struct cmd_add_job_pdu *pdu = (struct cmd_add_job_pdu *) cmd->payload; 935 struct thread_data *td; 936 uint32_t tnumber; 937 938 tnumber = le32_to_cpu(pdu->thread_number); 939 940 dprint(FD_NET, "server: updating options for job %u\n", tnumber); 941 942 if (!tnumber || tnumber > thread_number) { 943 send_update_job_reply(cmd->tag, ENODEV); 944 return 0; 945 } 946 947 td = &threads[tnumber - 1]; 948 convert_thread_options_to_cpu(&td->o, &pdu->top); 949 send_update_job_reply(cmd->tag, 0); 950 return 0; 951} 952 953static int handle_trigger_cmd(struct fio_net_cmd *cmd) 954{ 955 struct cmd_vtrigger_pdu *pdu = (struct cmd_vtrigger_pdu *) cmd->payload; 956 char *buf = (char *) pdu->cmd; 957 struct all_io_list *rep; 958 size_t sz; 959 960 pdu->len = le16_to_cpu(pdu->len); 961 buf[pdu->len] = '\0'; 962 963 rep = get_all_io_list(IO_LIST_ALL, &sz); 964 if (!rep) { 965 struct all_io_list state; 966 967 state.threads = cpu_to_le64((uint64_t) 0); 968 fio_net_queue_cmd(FIO_NET_CMD_VTRIGGER, &state, sizeof(state), NULL, SK_F_COPY | SK_F_INLINE); 969 } else 970 fio_net_queue_cmd(FIO_NET_CMD_VTRIGGER, rep, sz, NULL, SK_F_FREE | SK_F_INLINE); 971 972 exec_trigger(buf); 973 return 0; 974} 975 976static int handle_command(struct sk_out *sk_out, struct flist_head *job_list, 977 struct fio_net_cmd *cmd) 978{ 979 int ret; 980 981 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%llx\n", 982 fio_server_op(cmd->opcode), cmd->pdu_len, 983 (unsigned long long) cmd->tag); 984 985 switch (cmd->opcode) { 986 case FIO_NET_CMD_QUIT: 987 fio_terminate_threads(TERMINATE_ALL); 988 ret = 0; 989 break; 990 case FIO_NET_CMD_EXIT: 991 exit_backend = 1; 992 return -1; 993 case FIO_NET_CMD_LOAD_FILE: 994 ret = handle_load_file_cmd(cmd); 995 break; 996 case FIO_NET_CMD_JOB: 997 ret = handle_job_cmd(cmd); 998 break; 999 case FIO_NET_CMD_JOBLINE: 1000 ret = handle_jobline_cmd(cmd); 1001 break; 1002 case FIO_NET_CMD_PROBE: 1003 ret = handle_probe_cmd(cmd); 1004 break; 1005 case FIO_NET_CMD_SEND_ETA: 1006 ret = handle_send_eta_cmd(cmd); 1007 break; 1008 case FIO_NET_CMD_RUN: 1009 ret = handle_run_cmd(sk_out, job_list, cmd); 1010 break; 1011 case FIO_NET_CMD_UPDATE_JOB: 1012 ret = handle_update_job_cmd(cmd); 1013 break; 1014 case FIO_NET_CMD_VTRIGGER: 1015 ret = handle_trigger_cmd(cmd); 1016 break; 1017 case FIO_NET_CMD_SENDFILE: { 1018 struct cmd_sendfile_reply *in; 1019 struct cmd_reply *rep; 1020 1021 rep = (struct cmd_reply *) (uintptr_t) cmd->tag; 1022 1023 in = (struct cmd_sendfile_reply *) cmd->payload; 1024 in->size = le32_to_cpu(in->size); 1025 in->error = le32_to_cpu(in->error); 1026 if (in->error) { 1027 ret = 1; 1028 rep->error = in->error; 1029 } else { 1030 ret = 0; 1031 rep->data = smalloc(in->size); 1032 if (!rep->data) { 1033 ret = 1; 1034 rep->error = ENOMEM; 1035 } else { 1036 rep->size = in->size; 1037 memcpy(rep->data, in->data, in->size); 1038 } 1039 } 1040 fio_mutex_up(&rep->lock); 1041 break; 1042 } 1043 default: 1044 log_err("fio: unknown opcode: %s\n", fio_server_op(cmd->opcode)); 1045 ret = 1; 1046 } 1047 1048 return ret; 1049} 1050 1051/* 1052 * Send a command with a separate PDU, not inlined in the command 1053 */ 1054static int fio_send_cmd_ext_pdu(int sk, uint16_t opcode, const void *buf, 1055 off_t size, uint64_t tag, uint32_t flags) 1056{ 1057 struct fio_net_cmd cmd; 1058 struct iovec iov[2]; 1059 size_t this_len; 1060 int ret; 1061 1062 iov[0].iov_base = (void *) &cmd; 1063 iov[0].iov_len = sizeof(cmd); 1064 1065 do { 1066 uint32_t this_flags = flags; 1067 1068 this_len = size; 1069 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU) 1070 this_len = FIO_SERVER_MAX_FRAGMENT_PDU; 1071 1072 if (this_len < size) 1073 this_flags |= FIO_NET_CMD_F_MORE; 1074 1075 __fio_init_net_cmd(&cmd, opcode, this_len, tag); 1076 cmd.flags = __cpu_to_le32(this_flags); 1077 fio_net_cmd_crc_pdu(&cmd, buf); 1078 1079 iov[1].iov_base = (void *) buf; 1080 iov[1].iov_len = this_len; 1081 1082 ret = fio_sendv_data(sk, iov, 2); 1083 size -= this_len; 1084 buf += this_len; 1085 } while (!ret && size); 1086 1087 return ret; 1088} 1089 1090static void finish_entry(struct sk_entry *entry) 1091{ 1092 if (entry->flags & SK_F_FREE) 1093 free(entry->buf); 1094 else if (entry->flags & SK_F_COPY) 1095 sfree(entry->buf); 1096 1097 sfree(entry); 1098} 1099 1100static void entry_set_flags(struct sk_entry *entry, struct flist_head *list, 1101 unsigned int *flags) 1102{ 1103 if (!flist_empty(list)) 1104 *flags = FIO_NET_CMD_F_MORE; 1105 else 1106 *flags = 0; 1107} 1108 1109static int send_vec_entry(struct sk_out *sk_out, struct sk_entry *first) 1110{ 1111 unsigned int flags; 1112 int ret; 1113 1114 entry_set_flags(first, &first->next, &flags); 1115 1116 ret = fio_send_cmd_ext_pdu(sk_out->sk, first->opcode, first->buf, 1117 first->size, first->tag, flags); 1118 1119 while (!flist_empty(&first->next)) { 1120 struct sk_entry *next; 1121 1122 next = flist_first_entry(&first->next, struct sk_entry, list); 1123 flist_del_init(&next->list); 1124 1125 entry_set_flags(next, &first->next, &flags); 1126 1127 ret += fio_send_cmd_ext_pdu(sk_out->sk, next->opcode, next->buf, 1128 next->size, next->tag, flags); 1129 finish_entry(next); 1130 } 1131 1132 return ret; 1133} 1134 1135static int handle_sk_entry(struct sk_out *sk_out, struct sk_entry *entry) 1136{ 1137 int ret; 1138 1139 fio_mutex_down(&sk_out->xmit); 1140 1141 if (entry->flags & SK_F_VEC) 1142 ret = send_vec_entry(sk_out, entry); 1143 else if (entry->flags & SK_F_SIMPLE) { 1144 ret = fio_net_send_simple_cmd(sk_out->sk, entry->opcode, 1145 entry->tag, NULL); 1146 } else { 1147 ret = fio_net_send_cmd(sk_out->sk, entry->opcode, entry->buf, 1148 entry->size, &entry->tag, NULL); 1149 } 1150 1151 fio_mutex_up(&sk_out->xmit); 1152 1153 if (ret) 1154 log_err("fio: failed handling cmd %s\n", fio_server_op(entry->opcode)); 1155 1156 finish_entry(entry); 1157 return ret; 1158} 1159 1160static int handle_xmits(struct sk_out *sk_out) 1161{ 1162 struct sk_entry *entry; 1163 FLIST_HEAD(list); 1164 int ret = 0; 1165 1166 sk_lock(sk_out); 1167 if (flist_empty(&sk_out->list)) { 1168 sk_unlock(sk_out); 1169 return 0; 1170 } 1171 1172 flist_splice_init(&sk_out->list, &list); 1173 sk_unlock(sk_out); 1174 1175 while (!flist_empty(&list)) { 1176 entry = flist_entry(list.next, struct sk_entry, list); 1177 flist_del(&entry->list); 1178 ret += handle_sk_entry(sk_out, entry); 1179 } 1180 1181 return ret; 1182} 1183 1184static int handle_connection(struct sk_out *sk_out) 1185{ 1186 struct fio_net_cmd *cmd = NULL; 1187 FLIST_HEAD(job_list); 1188 int ret = 0; 1189 1190 reset_fio_state(); 1191 1192 /* read forever */ 1193 while (!exit_backend) { 1194 struct pollfd pfd = { 1195 .fd = sk_out->sk, 1196 .events = POLLIN, 1197 }; 1198 1199 ret = 0; 1200 do { 1201 int timeout = 1000; 1202 1203 if (!flist_empty(&job_list)) 1204 timeout = 100; 1205 1206 handle_xmits(sk_out); 1207 1208 ret = poll(&pfd, 1, 0); 1209 if (ret < 0) { 1210 if (errno == EINTR) 1211 break; 1212 log_err("fio: poll: %s\n", strerror(errno)); 1213 break; 1214 } else if (!ret) { 1215 fio_server_check_jobs(&job_list); 1216 fio_mutex_down_timeout(&sk_out->wait, timeout); 1217 continue; 1218 } 1219 1220 if (pfd.revents & POLLIN) 1221 break; 1222 if (pfd.revents & (POLLERR|POLLHUP)) { 1223 ret = 1; 1224 break; 1225 } 1226 } while (!exit_backend); 1227 1228 fio_server_check_jobs(&job_list); 1229 1230 if (ret < 0) 1231 break; 1232 1233 cmd = fio_net_recv_cmd(sk_out->sk, true); 1234 if (!cmd) { 1235 ret = -1; 1236 break; 1237 } 1238 1239 ret = handle_command(sk_out, &job_list, cmd); 1240 if (ret) 1241 break; 1242 1243 free(cmd); 1244 cmd = NULL; 1245 } 1246 1247 if (cmd) 1248 free(cmd); 1249 1250 handle_xmits(sk_out); 1251 1252 close(sk_out->sk); 1253 sk_out->sk = -1; 1254 __sk_out_drop(sk_out); 1255 _exit(ret); 1256} 1257 1258/* get the address on this host bound by the input socket, 1259 * whether it is ipv6 or ipv4 */ 1260 1261static int get_my_addr_str(int sk) 1262{ 1263 struct sockaddr_in6 myaddr6 = { 0, }; 1264 struct sockaddr_in myaddr4 = { 0, }; 1265 struct sockaddr *sockaddr_p; 1266 char *net_addr; 1267 socklen_t len; 1268 int ret; 1269 1270 if (use_ipv6) { 1271 len = sizeof(myaddr6); 1272 sockaddr_p = (struct sockaddr * )&myaddr6; 1273 net_addr = (char * )&myaddr6.sin6_addr; 1274 } else { 1275 len = sizeof(myaddr4); 1276 sockaddr_p = (struct sockaddr * )&myaddr4; 1277 net_addr = (char * )&myaddr4.sin_addr; 1278 } 1279 1280 ret = getsockname(sk, sockaddr_p, &len); 1281 if (ret) { 1282 log_err("fio: getsockaddr: %s\n", strerror(errno)); 1283 return -1; 1284 } 1285 1286 if (!inet_ntop(use_ipv6?AF_INET6:AF_INET, net_addr, client_sockaddr_str, INET6_ADDRSTRLEN - 1)) { 1287 log_err("inet_ntop: failed to convert addr to string\n"); 1288 return -1; 1289 } 1290 1291 dprint(FD_NET, "fio server bound to addr %s\n", client_sockaddr_str); 1292 return 0; 1293} 1294 1295static int accept_loop(int listen_sk) 1296{ 1297 struct sockaddr_in addr; 1298 struct sockaddr_in6 addr6; 1299 socklen_t len = use_ipv6 ? sizeof(addr6) : sizeof(addr); 1300 struct pollfd pfd; 1301 int ret = 0, sk, exitval = 0; 1302 FLIST_HEAD(conn_list); 1303 1304 dprint(FD_NET, "server enter accept loop\n"); 1305 1306 fio_set_fd_nonblocking(listen_sk, "server"); 1307 1308 while (!exit_backend) { 1309 struct sk_out *sk_out; 1310 const char *from; 1311 char buf[64]; 1312 pid_t pid; 1313 1314 pfd.fd = listen_sk; 1315 pfd.events = POLLIN; 1316 do { 1317 int timeout = 1000; 1318 1319 if (!flist_empty(&conn_list)) 1320 timeout = 100; 1321 1322 ret = poll(&pfd, 1, timeout); 1323 if (ret < 0) { 1324 if (errno == EINTR) 1325 break; 1326 log_err("fio: poll: %s\n", strerror(errno)); 1327 break; 1328 } else if (!ret) { 1329 fio_server_check_conns(&conn_list); 1330 continue; 1331 } 1332 1333 if (pfd.revents & POLLIN) 1334 break; 1335 } while (!exit_backend); 1336 1337 fio_server_check_conns(&conn_list); 1338 1339 if (exit_backend || ret < 0) 1340 break; 1341 1342 if (use_ipv6) 1343 sk = accept(listen_sk, (struct sockaddr *) &addr6, &len); 1344 else 1345 sk = accept(listen_sk, (struct sockaddr *) &addr, &len); 1346 1347 if (sk < 0) { 1348 log_err("fio: accept: %s\n", strerror(errno)); 1349 return -1; 1350 } 1351 1352 if (use_ipv6) 1353 from = inet_ntop(AF_INET6, (struct sockaddr *) &addr6.sin6_addr, buf, sizeof(buf)); 1354 else 1355 from = inet_ntop(AF_INET, (struct sockaddr *) &addr.sin_addr, buf, sizeof(buf)); 1356 1357 dprint(FD_NET, "server: connect from %s\n", from); 1358 1359 sk_out = smalloc(sizeof(*sk_out)); 1360 sk_out->sk = sk; 1361 INIT_FLIST_HEAD(&sk_out->list); 1362 __fio_mutex_init(&sk_out->lock, FIO_MUTEX_UNLOCKED); 1363 __fio_mutex_init(&sk_out->wait, FIO_MUTEX_LOCKED); 1364 __fio_mutex_init(&sk_out->xmit, FIO_MUTEX_UNLOCKED); 1365 1366 pid = fork(); 1367 if (pid) { 1368 close(sk); 1369 fio_server_add_conn_pid(&conn_list, pid); 1370 continue; 1371 } 1372 1373 /* if error, it's already logged, non-fatal */ 1374 get_my_addr_str(sk); 1375 1376 /* 1377 * Assign sk_out here, it'll be dropped in handle_connection() 1378 * since that function calls _exit() when done 1379 */ 1380 sk_out_assign(sk_out); 1381 handle_connection(sk_out); 1382 } 1383 1384 return exitval; 1385} 1386 1387int fio_server_text_output(int level, const char *buf, size_t len) 1388{ 1389 struct sk_out *sk_out = pthread_getspecific(sk_out_key); 1390 struct cmd_text_pdu *pdu; 1391 unsigned int tlen; 1392 struct timeval tv; 1393 1394 if (!sk_out || sk_out->sk == -1) 1395 return -1; 1396 1397 tlen = sizeof(*pdu) + len; 1398 pdu = malloc(tlen); 1399 1400 pdu->level = __cpu_to_le32(level); 1401 pdu->buf_len = __cpu_to_le32(len); 1402 1403 gettimeofday(&tv, NULL); 1404 pdu->log_sec = __cpu_to_le64(tv.tv_sec); 1405 pdu->log_usec = __cpu_to_le64(tv.tv_usec); 1406 1407 memcpy(pdu->buf, buf, len); 1408 1409 fio_net_queue_cmd(FIO_NET_CMD_TEXT, pdu, tlen, NULL, SK_F_COPY); 1410 free(pdu); 1411 return len; 1412} 1413 1414static void convert_io_stat(struct io_stat *dst, struct io_stat *src) 1415{ 1416 dst->max_val = cpu_to_le64(src->max_val); 1417 dst->min_val = cpu_to_le64(src->min_val); 1418 dst->samples = cpu_to_le64(src->samples); 1419 1420 /* 1421 * Encode to IEEE 754 for network transfer 1422 */ 1423 dst->mean.u.i = cpu_to_le64(fio_double_to_uint64(src->mean.u.f)); 1424 dst->S.u.i = cpu_to_le64(fio_double_to_uint64(src->S.u.f)); 1425} 1426 1427static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src) 1428{ 1429 int i; 1430 1431 for (i = 0; i < DDIR_RWDIR_CNT; i++) { 1432 dst->max_run[i] = cpu_to_le64(src->max_run[i]); 1433 dst->min_run[i] = cpu_to_le64(src->min_run[i]); 1434 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]); 1435 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]); 1436 dst->iobytes[i] = cpu_to_le64(src->iobytes[i]); 1437 dst->agg[i] = cpu_to_le64(src->agg[i]); 1438 } 1439 1440 dst->kb_base = cpu_to_le32(src->kb_base); 1441 dst->unit_base = cpu_to_le32(src->unit_base); 1442 dst->groupid = cpu_to_le32(src->groupid); 1443 dst->unified_rw_rep = cpu_to_le32(src->unified_rw_rep); 1444} 1445 1446/* 1447 * Send a CMD_TS, which packs struct thread_stat and group_run_stats 1448 * into a single payload. 1449 */ 1450void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs) 1451{ 1452 struct cmd_ts_pdu p; 1453 int i, j; 1454 void *ss_buf; 1455 uint64_t *ss_iops, *ss_bw; 1456 1457 dprint(FD_NET, "server sending end stats\n"); 1458 1459 memset(&p, 0, sizeof(p)); 1460 1461 strncpy(p.ts.name, ts->name, FIO_JOBNAME_SIZE - 1); 1462 strncpy(p.ts.verror, ts->verror, FIO_VERROR_SIZE - 1); 1463 strncpy(p.ts.description, ts->description, FIO_JOBDESC_SIZE - 1); 1464 1465 p.ts.error = cpu_to_le32(ts->error); 1466 p.ts.thread_number = cpu_to_le32(ts->thread_number); 1467 p.ts.groupid = cpu_to_le32(ts->groupid); 1468 p.ts.pid = cpu_to_le32(ts->pid); 1469 p.ts.members = cpu_to_le32(ts->members); 1470 p.ts.unified_rw_rep = cpu_to_le32(ts->unified_rw_rep); 1471 1472 for (i = 0; i < DDIR_RWDIR_CNT; i++) { 1473 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]); 1474 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]); 1475 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]); 1476 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]); 1477 } 1478 1479 p.ts.usr_time = cpu_to_le64(ts->usr_time); 1480 p.ts.sys_time = cpu_to_le64(ts->sys_time); 1481 p.ts.ctx = cpu_to_le64(ts->ctx); 1482 p.ts.minf = cpu_to_le64(ts->minf); 1483 p.ts.majf = cpu_to_le64(ts->majf); 1484 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles); 1485 p.ts.percentile_precision = cpu_to_le64(ts->percentile_precision); 1486 1487 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) { 1488 fio_fp64_t *src = &ts->percentile_list[i]; 1489 fio_fp64_t *dst = &p.ts.percentile_list[i]; 1490 1491 dst->u.i = cpu_to_le64(fio_double_to_uint64(src->u.f)); 1492 } 1493 1494 for (i = 0; i < FIO_IO_U_MAP_NR; i++) { 1495 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]); 1496 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]); 1497 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]); 1498 } 1499 1500 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) 1501 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]); 1502 for (i = 0; i < FIO_IO_U_LAT_M_NR; i++) 1503 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]); 1504 1505 for (i = 0; i < DDIR_RWDIR_CNT; i++) 1506 for (j = 0; j < FIO_IO_U_PLAT_NR; j++) 1507 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]); 1508 1509 for (i = 0; i < DDIR_RWDIR_CNT; i++) { 1510 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]); 1511 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]); 1512 p.ts.drop_io_u[i] = cpu_to_le64(ts->drop_io_u[i]); 1513 } 1514 1515 p.ts.total_submit = cpu_to_le64(ts->total_submit); 1516 p.ts.total_complete = cpu_to_le64(ts->total_complete); 1517 1518 for (i = 0; i < DDIR_RWDIR_CNT; i++) { 1519 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]); 1520 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]); 1521 } 1522 1523 p.ts.total_run_time = cpu_to_le64(ts->total_run_time); 1524 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error); 1525 p.ts.total_err_count = cpu_to_le64(ts->total_err_count); 1526 p.ts.first_error = cpu_to_le32(ts->first_error); 1527 p.ts.kb_base = cpu_to_le32(ts->kb_base); 1528 p.ts.unit_base = cpu_to_le32(ts->unit_base); 1529 1530 p.ts.latency_depth = cpu_to_le32(ts->latency_depth); 1531 p.ts.latency_target = cpu_to_le64(ts->latency_target); 1532 p.ts.latency_window = cpu_to_le64(ts->latency_window); 1533 p.ts.latency_percentile.u.i = cpu_to_le64(fio_double_to_uint64(ts->latency_percentile.u.f)); 1534 1535 p.ts.nr_block_infos = cpu_to_le64(ts->nr_block_infos); 1536 for (i = 0; i < p.ts.nr_block_infos; i++) 1537 p.ts.block_infos[i] = cpu_to_le32(ts->block_infos[i]); 1538 1539 p.ts.ss_dur = cpu_to_le64(ts->ss_dur); 1540 p.ts.ss_state = cpu_to_le32(ts->ss_state); 1541 p.ts.ss_head = cpu_to_le32(ts->ss_head); 1542 p.ts.ss_limit.u.i = cpu_to_le64(fio_double_to_uint64(ts->ss_limit.u.f)); 1543 p.ts.ss_slope.u.i = cpu_to_le64(fio_double_to_uint64(ts->ss_slope.u.f)); 1544 p.ts.ss_deviation.u.i = cpu_to_le64(fio_double_to_uint64(ts->ss_deviation.u.f)); 1545 p.ts.ss_criterion.u.i = cpu_to_le64(fio_double_to_uint64(ts->ss_criterion.u.f)); 1546 1547 convert_gs(&p.rs, rs); 1548 1549 dprint(FD_NET, "ts->ss_state = %d\n", ts->ss_state); 1550 if (ts->ss_state & __FIO_SS_DATA) { 1551 dprint(FD_NET, "server sending steadystate ring buffers\n"); 1552 1553 ss_buf = malloc(sizeof(p) + 2*ts->ss_dur*sizeof(uint64_t)); 1554 1555 memcpy(ss_buf, &p, sizeof(p)); 1556 1557 ss_iops = (uint64_t *) ((struct cmd_ts_pdu *)ss_buf + 1); 1558 ss_bw = ss_iops + (int) ts->ss_dur; 1559 for (i = 0; i < ts->ss_dur; i++) { 1560 ss_iops[i] = cpu_to_le64(ts->ss_iops_data[i]); 1561 ss_bw[i] = cpu_to_le64(ts->ss_bw_data[i]); 1562 } 1563 1564 fio_net_queue_cmd(FIO_NET_CMD_TS, ss_buf, sizeof(p) + 2*ts->ss_dur*sizeof(uint64_t), NULL, SK_F_COPY); 1565 1566 free(ss_buf); 1567 } 1568 else 1569 fio_net_queue_cmd(FIO_NET_CMD_TS, &p, sizeof(p), NULL, SK_F_COPY); 1570} 1571 1572void fio_server_send_gs(struct group_run_stats *rs) 1573{ 1574 struct group_run_stats gs; 1575 1576 dprint(FD_NET, "server sending group run stats\n"); 1577 1578 convert_gs(&gs, rs); 1579 fio_net_queue_cmd(FIO_NET_CMD_GS, &gs, sizeof(gs), NULL, SK_F_COPY); 1580} 1581 1582void fio_server_send_job_options(struct flist_head *opt_list, 1583 unsigned int groupid) 1584{ 1585 struct cmd_job_option pdu; 1586 struct flist_head *entry; 1587 1588 if (flist_empty(opt_list)) 1589 return; 1590 1591 flist_for_each(entry, opt_list) { 1592 struct print_option *p; 1593 size_t len; 1594 1595 p = flist_entry(entry, struct print_option, list); 1596 memset(&pdu, 0, sizeof(pdu)); 1597 1598 if (groupid == -1U) { 1599 pdu.global = __cpu_to_le16(1); 1600 pdu.groupid = 0; 1601 } else { 1602 pdu.global = 0; 1603 pdu.groupid = cpu_to_le32(groupid); 1604 } 1605 len = strlen(p->name); 1606 if (len >= sizeof(pdu.name)) { 1607 len = sizeof(pdu.name) - 1; 1608 pdu.truncated = __cpu_to_le16(1); 1609 } 1610 memcpy(pdu.name, p->name, len); 1611 if (p->value) { 1612 len = strlen(p->value); 1613 if (len >= sizeof(pdu.value)) { 1614 len = sizeof(pdu.value) - 1; 1615 pdu.truncated = __cpu_to_le16(1); 1616 } 1617 memcpy(pdu.value, p->value, len); 1618 } 1619 fio_net_queue_cmd(FIO_NET_CMD_JOB_OPT, &pdu, sizeof(pdu), NULL, SK_F_COPY); 1620 } 1621} 1622 1623static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src) 1624{ 1625 int i; 1626 1627 for (i = 0; i < 2; i++) { 1628 dst->ios[i] = cpu_to_le64(src->ios[i]); 1629 dst->merges[i] = cpu_to_le64(src->merges[i]); 1630 dst->sectors[i] = cpu_to_le64(src->sectors[i]); 1631 dst->ticks[i] = cpu_to_le64(src->ticks[i]); 1632 } 1633 1634 dst->io_ticks = cpu_to_le64(src->io_ticks); 1635 dst->time_in_queue = cpu_to_le64(src->time_in_queue); 1636 dst->slavecount = cpu_to_le32(src->slavecount); 1637 dst->max_util.u.i = cpu_to_le64(fio_double_to_uint64(src->max_util.u.f)); 1638} 1639 1640static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src) 1641{ 1642 int i; 1643 1644 dst->name[FIO_DU_NAME_SZ - 1] = '\0'; 1645 strncpy((char *) dst->name, (char *) src->name, FIO_DU_NAME_SZ - 1); 1646 1647 for (i = 0; i < 2; i++) { 1648 dst->s.ios[i] = cpu_to_le64(src->s.ios[i]); 1649 dst->s.merges[i] = cpu_to_le64(src->s.merges[i]); 1650 dst->s.sectors[i] = cpu_to_le64(src->s.sectors[i]); 1651 dst->s.ticks[i] = cpu_to_le64(src->s.ticks[i]); 1652 } 1653 1654 dst->s.io_ticks = cpu_to_le64(src->s.io_ticks); 1655 dst->s.time_in_queue = cpu_to_le64(src->s.time_in_queue); 1656 dst->s.msec = cpu_to_le64(src->s.msec); 1657} 1658 1659void fio_server_send_du(void) 1660{ 1661 struct disk_util *du; 1662 struct flist_head *entry; 1663 struct cmd_du_pdu pdu; 1664 1665 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list)); 1666 1667 memset(&pdu, 0, sizeof(pdu)); 1668 1669 flist_for_each(entry, &disk_list) { 1670 du = flist_entry(entry, struct disk_util, list); 1671 1672 convert_dus(&pdu.dus, &du->dus); 1673 convert_agg(&pdu.agg, &du->agg); 1674 1675 fio_net_queue_cmd(FIO_NET_CMD_DU, &pdu, sizeof(pdu), NULL, SK_F_COPY); 1676 } 1677} 1678 1679#ifdef CONFIG_ZLIB 1680 1681static inline void __fio_net_prep_tail(z_stream *stream, void *out_pdu, 1682 struct sk_entry **last_entry, 1683 struct sk_entry *first) 1684{ 1685 unsigned int this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream->avail_out; 1686 1687 *last_entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, out_pdu, this_len, 1688 NULL, SK_F_VEC | SK_F_INLINE | SK_F_FREE); 1689 flist_add_tail(&(*last_entry)->list, &first->next); 1690 1691} 1692 1693/* 1694 * Deflates the next input given, creating as many new packets in the 1695 * linked list as necessary. 1696 */ 1697static int __deflate_pdu_buffer(void *next_in, unsigned int next_sz, void **out_pdu, 1698 struct sk_entry **last_entry, z_stream *stream, 1699 struct sk_entry *first) 1700{ 1701 int ret; 1702 1703 stream->next_in = next_in; 1704 stream->avail_in = next_sz; 1705 do { 1706 if (! stream->avail_out) { 1707 1708 __fio_net_prep_tail(stream, *out_pdu, last_entry, first); 1709 1710 *out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU); 1711 1712 stream->avail_out = FIO_SERVER_MAX_FRAGMENT_PDU; 1713 stream->next_out = *out_pdu; 1714 } 1715 1716 ret = deflate(stream, Z_BLOCK); 1717 1718 if (ret < 0) { 1719 free(*out_pdu); 1720 return 1; 1721 } 1722 } while (stream->avail_in); 1723 1724 return 0; 1725} 1726 1727static int __fio_append_iolog_gz_hist(struct sk_entry *first, struct io_log *log, 1728 struct io_logs *cur_log, z_stream *stream) 1729{ 1730 struct sk_entry *entry; 1731 void *out_pdu; 1732 int ret, i, j; 1733 int sample_sz = log_entry_sz(log); 1734 1735 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU); 1736 stream->avail_out = FIO_SERVER_MAX_FRAGMENT_PDU; 1737 stream->next_out = out_pdu; 1738 1739 for (i = 0; i < cur_log->nr_samples; i++) { 1740 struct io_sample *s; 1741 struct io_u_plat_entry *cur_plat_entry, *prev_plat_entry; 1742 unsigned int *cur_plat, *prev_plat; 1743 1744 s = get_sample(log, cur_log, i); 1745 ret = __deflate_pdu_buffer(s, sample_sz, &out_pdu, &entry, stream, first); 1746 if (ret) 1747 return ret; 1748 1749 /* Do the subtraction on server side so that client doesn't have to 1750 * reconstruct our linked list from packets. 1751 */ 1752 cur_plat_entry = s->data.plat_entry; 1753 prev_plat_entry = flist_first_entry(&cur_plat_entry->list, struct io_u_plat_entry, list); 1754 cur_plat = cur_plat_entry->io_u_plat; 1755 prev_plat = prev_plat_entry->io_u_plat; 1756 1757 for (j = 0; j < FIO_IO_U_PLAT_NR; j++) { 1758 cur_plat[j] -= prev_plat[j]; 1759 } 1760 1761 flist_del(&prev_plat_entry->list); 1762 free(prev_plat_entry); 1763 1764 ret = __deflate_pdu_buffer(cur_plat_entry, sizeof(*cur_plat_entry), 1765 &out_pdu, &entry, stream, first); 1766 1767 if (ret) 1768 return ret; 1769 } 1770 1771 __fio_net_prep_tail(stream, out_pdu, &entry, first); 1772 1773 return 0; 1774} 1775 1776static int __fio_append_iolog_gz(struct sk_entry *first, struct io_log *log, 1777 struct io_logs *cur_log, z_stream *stream) 1778{ 1779 unsigned int this_len; 1780 void *out_pdu; 1781 int ret; 1782 1783 if (log->log_type == IO_LOG_TYPE_HIST) 1784 return __fio_append_iolog_gz_hist(first, log, cur_log, stream); 1785 1786 stream->next_in = (void *) cur_log->log; 1787 stream->avail_in = cur_log->nr_samples * log_entry_sz(log); 1788 1789 do { 1790 struct sk_entry *entry; 1791 1792 /* 1793 * Dirty - since the log is potentially huge, compress it into 1794 * FIO_SERVER_MAX_FRAGMENT_PDU chunks and let the receiving 1795 * side defragment it. 1796 */ 1797 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU); 1798 1799 stream->avail_out = FIO_SERVER_MAX_FRAGMENT_PDU; 1800 stream->next_out = out_pdu; 1801 ret = deflate(stream, Z_BLOCK); 1802 /* may be Z_OK, or Z_STREAM_END */ 1803 if (ret < 0) { 1804 free(out_pdu); 1805 return 1; 1806 } 1807 1808 this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream->avail_out; 1809 1810 entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, out_pdu, this_len, 1811 NULL, SK_F_VEC | SK_F_INLINE | SK_F_FREE); 1812 flist_add_tail(&entry->list, &first->next); 1813 } while (stream->avail_in); 1814 1815 return 0; 1816} 1817 1818static int fio_append_iolog_gz(struct sk_entry *first, struct io_log *log) 1819{ 1820 int ret = 0; 1821 z_stream stream; 1822 1823 memset(&stream, 0, sizeof(stream)); 1824 stream.zalloc = Z_NULL; 1825 stream.zfree = Z_NULL; 1826 stream.opaque = Z_NULL; 1827 1828 if (deflateInit(&stream, Z_DEFAULT_COMPRESSION) != Z_OK) 1829 return 1; 1830 1831 while (!flist_empty(&log->io_logs)) { 1832 struct io_logs *cur_log; 1833 1834 cur_log = flist_first_entry(&log->io_logs, struct io_logs, list); 1835 flist_del_init(&cur_log->list); 1836 1837 ret = __fio_append_iolog_gz(first, log, cur_log, &stream); 1838 if (ret) 1839 break; 1840 } 1841 1842 ret = deflate(&stream, Z_FINISH); 1843 1844 while (ret != Z_STREAM_END) { 1845 struct sk_entry *entry; 1846 unsigned int this_len; 1847 void *out_pdu; 1848 1849 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU); 1850 stream.avail_out = FIO_SERVER_MAX_FRAGMENT_PDU; 1851 stream.next_out = out_pdu; 1852 1853 ret = deflate(&stream, Z_FINISH); 1854 /* may be Z_OK, or Z_STREAM_END */ 1855 if (ret < 0) { 1856 free(out_pdu); 1857 break; 1858 } 1859 1860 this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream.avail_out; 1861 1862 entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, out_pdu, this_len, 1863 NULL, SK_F_VEC | SK_F_INLINE | SK_F_FREE); 1864 flist_add_tail(&entry->list, &first->next); 1865 } while (ret != Z_STREAM_END); 1866 1867 ret = deflateEnd(&stream); 1868 if (ret == Z_OK) 1869 return 0; 1870 1871 return 1; 1872} 1873#else 1874static int fio_append_iolog_gz(struct sk_entry *first, struct io_log *log) 1875{ 1876 return 1; 1877} 1878#endif 1879 1880static int fio_append_gz_chunks(struct sk_entry *first, struct io_log *log) 1881{ 1882 struct sk_entry *entry; 1883 struct flist_head *node; 1884 1885 pthread_mutex_lock(&log->chunk_lock); 1886 flist_for_each(node, &log->chunk_list) { 1887 struct iolog_compress *c; 1888 1889 c = flist_entry(node, struct iolog_compress, list); 1890 entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, c->buf, c->len, 1891 NULL, SK_F_VEC | SK_F_INLINE); 1892 flist_add_tail(&entry->list, &first->next); 1893 } 1894 pthread_mutex_unlock(&log->chunk_lock); 1895 1896 return 0; 1897} 1898 1899static int fio_append_text_log(struct sk_entry *first, struct io_log *log) 1900{ 1901 struct sk_entry *entry; 1902 1903 while (!flist_empty(&log->io_logs)) { 1904 struct io_logs *cur_log; 1905 size_t size; 1906 1907 cur_log = flist_first_entry(&log->io_logs, struct io_logs, list); 1908 flist_del_init(&cur_log->list); 1909 1910 size = cur_log->nr_samples * log_entry_sz(log); 1911 1912 entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, cur_log->log, size, 1913 NULL, SK_F_VEC | SK_F_INLINE); 1914 flist_add_tail(&entry->list, &first->next); 1915 } 1916 1917 return 0; 1918} 1919 1920int fio_send_iolog(struct thread_data *td, struct io_log *log, const char *name) 1921{ 1922 struct cmd_iolog_pdu pdu; 1923 struct sk_entry *first; 1924 struct flist_head *entry; 1925 int ret = 0; 1926 1927 pdu.nr_samples = cpu_to_le64(iolog_nr_samples(log)); 1928 pdu.thread_number = cpu_to_le32(td->thread_number); 1929 pdu.log_type = cpu_to_le32(log->log_type); 1930 pdu.log_hist_coarseness = cpu_to_le32(log->hist_coarseness); 1931 1932 if (!flist_empty(&log->chunk_list)) 1933 pdu.compressed = __cpu_to_le32(STORE_COMPRESSED); 1934 else if (use_zlib) 1935 pdu.compressed = __cpu_to_le32(XMIT_COMPRESSED); 1936 else 1937 pdu.compressed = 0; 1938 1939 strncpy((char *) pdu.name, name, FIO_NET_NAME_MAX); 1940 pdu.name[FIO_NET_NAME_MAX - 1] = '\0'; 1941 1942 /* 1943 * We can't do this for a pre-compressed log, but for that case, 1944 * log->nr_samples is zero anyway. 1945 */ 1946 flist_for_each(entry, &log->io_logs) { 1947 struct io_logs *cur_log; 1948 int i; 1949 1950 cur_log = flist_entry(entry, struct io_logs, list); 1951 1952 for (i = 0; i < cur_log->nr_samples; i++) { 1953 struct io_sample *s = get_sample(log, cur_log, i); 1954 1955 s->time = cpu_to_le64(s->time); 1956 s->data.val = cpu_to_le64(s->data.val); 1957 s->__ddir = cpu_to_le32(s->__ddir); 1958 s->bs = cpu_to_le32(s->bs); 1959 1960 if (log->log_offset) { 1961 struct io_sample_offset *so = (void *) s; 1962 1963 so->offset = cpu_to_le64(so->offset); 1964 } 1965 } 1966 } 1967 1968 /* 1969 * Assemble header entry first 1970 */ 1971 first = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, &pdu, sizeof(pdu), NULL, SK_F_VEC | SK_F_INLINE | SK_F_COPY); 1972 1973 /* 1974 * Now append actual log entries. If log compression was enabled on 1975 * the job, just send out the compressed chunks directly. If we 1976 * have a plain log, compress if we can, then send. Otherwise, send 1977 * the plain text output. 1978 */ 1979 if (!flist_empty(&log->chunk_list)) 1980 ret = fio_append_gz_chunks(first, log); 1981 else if (use_zlib) 1982 ret = fio_append_iolog_gz(first, log); 1983 else 1984 ret = fio_append_text_log(first, log); 1985 1986 fio_net_queue_entry(first); 1987 return ret; 1988} 1989 1990void fio_server_send_add_job(struct thread_data *td) 1991{ 1992 struct cmd_add_job_pdu pdu; 1993 1994 memset(&pdu, 0, sizeof(pdu)); 1995 pdu.thread_number = cpu_to_le32(td->thread_number); 1996 pdu.groupid = cpu_to_le32(td->groupid); 1997 convert_thread_options_to_net(&pdu.top, &td->o); 1998 1999 fio_net_queue_cmd(FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), NULL, 2000 SK_F_COPY); 2001} 2002 2003void fio_server_send_start(struct thread_data *td) 2004{ 2005 struct sk_out *sk_out = pthread_getspecific(sk_out_key); 2006 2007 assert(sk_out->sk != -1); 2008 2009 fio_net_queue_cmd(FIO_NET_CMD_SERVER_START, NULL, 0, NULL, SK_F_SIMPLE); 2010} 2011 2012int fio_server_get_verify_state(const char *name, int threadnumber, 2013 void **datap) 2014{ 2015 struct thread_io_list *s; 2016 struct cmd_sendfile out; 2017 struct cmd_reply *rep; 2018 uint64_t tag; 2019 void *data; 2020 int ret; 2021 2022 dprint(FD_NET, "server: request verify state\n"); 2023 2024 rep = smalloc(sizeof(*rep)); 2025 if (!rep) 2026 return ENOMEM; 2027 2028 __fio_mutex_init(&rep->lock, FIO_MUTEX_LOCKED); 2029 rep->data = NULL; 2030 rep->error = 0; 2031 2032 verify_state_gen_name((char *) out.path, sizeof(out.path), name, me, 2033 threadnumber); 2034 tag = (uint64_t) (uintptr_t) rep; 2035 fio_net_queue_cmd(FIO_NET_CMD_SENDFILE, &out, sizeof(out), &tag, 2036 SK_F_COPY); 2037 2038 /* 2039 * Wait for the backend to receive the reply 2040 */ 2041 if (fio_mutex_down_timeout(&rep->lock, 10000)) { 2042 log_err("fio: timed out waiting for reply\n"); 2043 ret = ETIMEDOUT; 2044 goto fail; 2045 } 2046 2047 if (rep->error) { 2048 log_err("fio: failure on receiving state file %s: %s\n", 2049 out.path, strerror(rep->error)); 2050 ret = rep->error; 2051fail: 2052 *datap = NULL; 2053 sfree(rep); 2054 fio_net_queue_quit(); 2055 return ret; 2056 } 2057 2058 /* 2059 * The format is verify_state_hdr, then thread_io_list. Verify 2060 * the header, and the thread_io_list checksum 2061 */ 2062 s = rep->data + sizeof(struct verify_state_hdr); 2063 if (verify_state_hdr(rep->data, s)) { 2064 ret = EILSEQ; 2065 goto fail; 2066 } 2067 2068 /* 2069 * Don't need the header from now, copy just the thread_io_list 2070 */ 2071 ret = 0; 2072 rep->size -= sizeof(struct verify_state_hdr); 2073 data = malloc(rep->size); 2074 memcpy(data, s, rep->size); 2075 *datap = data; 2076 2077 sfree(rep->data); 2078 __fio_mutex_remove(&rep->lock); 2079 sfree(rep); 2080 return ret; 2081} 2082 2083static int fio_init_server_ip(void) 2084{ 2085 struct sockaddr *addr; 2086 socklen_t socklen; 2087 char buf[80]; 2088 const char *str; 2089 int sk, opt; 2090 2091 if (use_ipv6) 2092 sk = socket(AF_INET6, SOCK_STREAM, 0); 2093 else 2094 sk = socket(AF_INET, SOCK_STREAM, 0); 2095 2096 if (sk < 0) { 2097 log_err("fio: socket: %s\n", strerror(errno)); 2098 return -1; 2099 } 2100 2101 opt = 1; 2102 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, (void *)&opt, sizeof(opt)) < 0) { 2103 log_err("fio: setsockopt(REUSEADDR): %s\n", strerror(errno)); 2104 close(sk); 2105 return -1; 2106 } 2107#ifdef SO_REUSEPORT 2108 /* 2109 * Not fatal if fails, so just ignore it if that happens 2110 */ 2111 setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)); 2112#endif 2113 2114 if (use_ipv6) { 2115 const void *src = &saddr_in6.sin6_addr; 2116 2117 addr = (struct sockaddr *) &saddr_in6; 2118 socklen = sizeof(saddr_in6); 2119 saddr_in6.sin6_family = AF_INET6; 2120 str = inet_ntop(AF_INET6, src, buf, sizeof(buf)); 2121 } else { 2122 const void *src = &saddr_in.sin_addr; 2123 2124 addr = (struct sockaddr *) &saddr_in; 2125 socklen = sizeof(saddr_in); 2126 saddr_in.sin_family = AF_INET; 2127 str = inet_ntop(AF_INET, src, buf, sizeof(buf)); 2128 } 2129 2130 if (bind(sk, addr, socklen) < 0) { 2131 log_err("fio: bind: %s\n", strerror(errno)); 2132 log_info("fio: failed with IPv%c %s\n", use_ipv6 ? '6' : '4', str); 2133 close(sk); 2134 return -1; 2135 } 2136 2137 return sk; 2138} 2139 2140static int fio_init_server_sock(void) 2141{ 2142 struct sockaddr_un addr; 2143 socklen_t len; 2144 mode_t mode; 2145 int sk; 2146 2147 sk = socket(AF_UNIX, SOCK_STREAM, 0); 2148 if (sk < 0) { 2149 log_err("fio: socket: %s\n", strerror(errno)); 2150 return -1; 2151 } 2152 2153 mode = umask(000); 2154 2155 memset(&addr, 0, sizeof(addr)); 2156 addr.sun_family = AF_UNIX; 2157 strncpy(addr.sun_path, bind_sock, sizeof(addr.sun_path) - 1); 2158 2159 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1; 2160 2161 if (bind(sk, (struct sockaddr *) &addr, len) < 0) { 2162 log_err("fio: bind: %s\n", strerror(errno)); 2163 close(sk); 2164 return -1; 2165 } 2166 2167 umask(mode); 2168 return sk; 2169} 2170 2171static int fio_init_server_connection(void) 2172{ 2173 char bind_str[128]; 2174 int sk; 2175 2176 dprint(FD_NET, "starting server\n"); 2177 2178 if (!bind_sock) 2179 sk = fio_init_server_ip(); 2180 else 2181 sk = fio_init_server_sock(); 2182 2183 if (sk < 0) 2184 return sk; 2185 2186 memset(bind_str, 0, sizeof(bind_str)); 2187 2188 if (!bind_sock) { 2189 char *p, port[16]; 2190 const void *src; 2191 int af; 2192 2193 if (use_ipv6) { 2194 af = AF_INET6; 2195 src = &saddr_in6.sin6_addr; 2196 } else { 2197 af = AF_INET; 2198 src = &saddr_in.sin_addr; 2199 } 2200 2201 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str)); 2202 2203 sprintf(port, ",%u", fio_net_port); 2204 if (p) 2205 strcat(p, port); 2206 else 2207 strncpy(bind_str, port, sizeof(bind_str) - 1); 2208 } else 2209 strncpy(bind_str, bind_sock, sizeof(bind_str) - 1); 2210 2211 log_info("fio: server listening on %s\n", bind_str); 2212 2213 if (listen(sk, 4) < 0) { 2214 log_err("fio: listen: %s\n", strerror(errno)); 2215 close(sk); 2216 return -1; 2217 } 2218 2219 return sk; 2220} 2221 2222int fio_server_parse_host(const char *host, int ipv6, struct in_addr *inp, 2223 struct in6_addr *inp6) 2224 2225{ 2226 int ret = 0; 2227 2228 if (ipv6) 2229 ret = inet_pton(AF_INET6, host, inp6); 2230 else 2231 ret = inet_pton(AF_INET, host, inp); 2232 2233 if (ret != 1) { 2234 struct addrinfo hints, *res; 2235 2236 memset(&hints, 0, sizeof(hints)); 2237 hints.ai_family = ipv6 ? AF_INET6 : AF_INET; 2238 hints.ai_socktype = SOCK_STREAM; 2239 2240 ret = getaddrinfo(host, NULL, &hints, &res); 2241 if (ret) { 2242 log_err("fio: failed to resolve <%s> (%s)\n", host, 2243 gai_strerror(ret)); 2244 return 1; 2245 } 2246 2247 if (ipv6) 2248 memcpy(inp6, &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr, sizeof(*inp6)); 2249 else 2250 memcpy(inp, &((struct sockaddr_in *) res->ai_addr)->sin_addr, sizeof(*inp)); 2251 2252 ret = 1; 2253 freeaddrinfo(res); 2254 } 2255 2256 return !(ret == 1); 2257} 2258 2259/* 2260 * Parse a host/ip/port string. Reads from 'str'. 2261 * 2262 * Outputs: 2263 * 2264 * For IPv4: 2265 * *ptr is the host, *port is the port, inp is the destination. 2266 * For IPv6: 2267 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1. 2268 * For local domain sockets: 2269 * *ptr is the filename, *is_sock is 1. 2270 */ 2271int fio_server_parse_string(const char *str, char **ptr, int *is_sock, 2272 int *port, struct in_addr *inp, 2273 struct in6_addr *inp6, int *ipv6) 2274{ 2275 const char *host = str; 2276 char *portp; 2277 int lport = 0; 2278 2279 *ptr = NULL; 2280 *is_sock = 0; 2281 *port = fio_net_port; 2282 *ipv6 = 0; 2283 2284 if (!strncmp(str, "sock:", 5)) { 2285 *ptr = strdup(str + 5); 2286 *is_sock = 1; 2287 2288 return 0; 2289 } 2290 2291 /* 2292 * Is it ip:<ip or host>:port 2293 */ 2294 if (!strncmp(host, "ip:", 3)) 2295 host += 3; 2296 else if (!strncmp(host, "ip4:", 4)) 2297 host += 4; 2298 else if (!strncmp(host, "ip6:", 4)) { 2299 host += 4; 2300 *ipv6 = 1; 2301 } else if (host[0] == ':') { 2302 /* String is :port */ 2303 host++; 2304 lport = atoi(host); 2305 if (!lport || lport > 65535) { 2306 log_err("fio: bad server port %u\n", lport); 2307 return 1; 2308 } 2309 /* no hostname given, we are done */ 2310 *port = lport; 2311 return 0; 2312 } 2313 2314 /* 2315 * If no port seen yet, check if there's a last ',' at the end 2316 */ 2317 if (!lport) { 2318 portp = strchr(host, ','); 2319 if (portp) { 2320 *portp = '\0'; 2321 portp++; 2322 lport = atoi(portp); 2323 if (!lport || lport > 65535) { 2324 log_err("fio: bad server port %u\n", lport); 2325 return 1; 2326 } 2327 } 2328 } 2329 2330 if (lport) 2331 *port = lport; 2332 2333 if (!strlen(host)) 2334 return 0; 2335 2336 *ptr = strdup(host); 2337 2338 if (fio_server_parse_host(*ptr, *ipv6, inp, inp6)) { 2339 free(*ptr); 2340 *ptr = NULL; 2341 return 1; 2342 } 2343 2344 if (*port == 0) 2345 *port = fio_net_port; 2346 2347 return 0; 2348} 2349 2350/* 2351 * Server arg should be one of: 2352 * 2353 * sock:/path/to/socket 2354 * ip:1.2.3.4 2355 * 1.2.3.4 2356 * 2357 * Where sock uses unix domain sockets, and ip binds the server to 2358 * a specific interface. If no arguments are given to the server, it 2359 * uses IP and binds to 0.0.0.0. 2360 * 2361 */ 2362static int fio_handle_server_arg(void) 2363{ 2364 int port = fio_net_port; 2365 int is_sock, ret = 0; 2366 2367 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY); 2368 2369 if (!fio_server_arg) 2370 goto out; 2371 2372 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock, 2373 &port, &saddr_in.sin_addr, 2374 &saddr_in6.sin6_addr, &use_ipv6); 2375 2376 if (!is_sock && bind_sock) { 2377 free(bind_sock); 2378 bind_sock = NULL; 2379 } 2380 2381out: 2382 fio_net_port = port; 2383 saddr_in.sin_port = htons(port); 2384 saddr_in6.sin6_port = htons(port); 2385 return ret; 2386} 2387 2388static void sig_int(int sig) 2389{ 2390 if (bind_sock) 2391 unlink(bind_sock); 2392} 2393 2394static void set_sig_handlers(void) 2395{ 2396 struct sigaction act; 2397 2398 memset(&act, 0, sizeof(act)); 2399 act.sa_handler = sig_int; 2400 act.sa_flags = SA_RESTART; 2401 sigaction(SIGINT, &act, NULL); 2402} 2403 2404void fio_server_destroy_sk_key(void) 2405{ 2406 pthread_key_delete(sk_out_key); 2407} 2408 2409int fio_server_create_sk_key(void) 2410{ 2411 if (pthread_key_create(&sk_out_key, NULL)) { 2412 log_err("fio: can't create sk_out backend key\n"); 2413 return 1; 2414 } 2415 2416 pthread_setspecific(sk_out_key, NULL); 2417 return 0; 2418} 2419 2420static int fio_server(void) 2421{ 2422 int sk, ret; 2423 2424 dprint(FD_NET, "starting server\n"); 2425 2426 if (fio_handle_server_arg()) 2427 return -1; 2428 2429 sk = fio_init_server_connection(); 2430 if (sk < 0) 2431 return -1; 2432 2433 set_sig_handlers(); 2434 2435 ret = accept_loop(sk); 2436 2437 close(sk); 2438 2439 if (fio_server_arg) { 2440 free(fio_server_arg); 2441 fio_server_arg = NULL; 2442 } 2443 if (bind_sock) 2444 free(bind_sock); 2445 2446 return ret; 2447} 2448 2449void fio_server_got_signal(int signal) 2450{ 2451 struct sk_out *sk_out = pthread_getspecific(sk_out_key); 2452 2453 assert(sk_out); 2454 2455 if (signal == SIGPIPE) 2456 sk_out->sk = -1; 2457 else { 2458 log_info("\nfio: terminating on signal %d\n", signal); 2459 exit_backend = 1; 2460 } 2461} 2462 2463static int check_existing_pidfile(const char *pidfile) 2464{ 2465 struct stat sb; 2466 char buf[16]; 2467 pid_t pid; 2468 FILE *f; 2469 2470 if (stat(pidfile, &sb)) 2471 return 0; 2472 2473 f = fopen(pidfile, "r"); 2474 if (!f) 2475 return 0; 2476 2477 if (fread(buf, sb.st_size, 1, f) <= 0) { 2478 fclose(f); 2479 return 1; 2480 } 2481 fclose(f); 2482 2483 pid = atoi(buf); 2484 if (kill(pid, SIGCONT) < 0) 2485 return errno != ESRCH; 2486 2487 return 1; 2488} 2489 2490static int write_pid(pid_t pid, const char *pidfile) 2491{ 2492 FILE *fpid; 2493 2494 fpid = fopen(pidfile, "w"); 2495 if (!fpid) { 2496 log_err("fio: failed opening pid file %s\n", pidfile); 2497 return 1; 2498 } 2499 2500 fprintf(fpid, "%u\n", (unsigned int) pid); 2501 fclose(fpid); 2502 return 0; 2503} 2504 2505/* 2506 * If pidfile is specified, background us. 2507 */ 2508int fio_start_server(char *pidfile) 2509{ 2510 pid_t pid; 2511 int ret; 2512 2513#if defined(WIN32) 2514 WSADATA wsd; 2515 WSAStartup(MAKEWORD(2, 2), &wsd); 2516#endif 2517 2518 if (!pidfile) 2519 return fio_server(); 2520 2521 if (check_existing_pidfile(pidfile)) { 2522 log_err("fio: pidfile %s exists and server appears alive\n", 2523 pidfile); 2524 free(pidfile); 2525 return -1; 2526 } 2527 2528 pid = fork(); 2529 if (pid < 0) { 2530 log_err("fio: failed server fork: %s\n", strerror(errno)); 2531 free(pidfile); 2532 return -1; 2533 } else if (pid) { 2534 ret = write_pid(pid, pidfile); 2535 free(pidfile); 2536 _exit(ret); 2537 } 2538 2539 setsid(); 2540 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER); 2541 log_syslog = 1; 2542 close(STDIN_FILENO); 2543 close(STDOUT_FILENO); 2544 close(STDERR_FILENO); 2545 f_out = NULL; 2546 f_err = NULL; 2547 2548 ret = fio_server(); 2549 2550 closelog(); 2551 unlink(pidfile); 2552 free(pidfile); 2553 return ret; 2554} 2555 2556void fio_server_set_arg(const char *arg) 2557{ 2558 fio_server_arg = strdup(arg); 2559} 2560