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 "server.h" 25#include "crc/crc16.h" 26#include "lib/ieee754.h" 27#include "verify.h" 28#include "smalloc.h" 29 30int fio_net_port = FIO_NET_PORT; 31 32int exit_backend = 0; 33 34static int server_fd = -1; 35static char *fio_server_arg; 36static char *bind_sock; 37static struct sockaddr_in saddr_in; 38static struct sockaddr_in6 saddr_in6; 39static int use_ipv6; 40#ifdef CONFIG_ZLIB 41static unsigned int has_zlib = 1; 42#else 43static unsigned int has_zlib = 0; 44#endif 45static unsigned int use_zlib; 46static char me[128]; 47 48struct fio_fork_item { 49 struct flist_head list; 50 int exitval; 51 int signal; 52 int exited; 53 pid_t pid; 54}; 55 56struct cmd_reply { 57 struct fio_mutex lock; 58 void *data; 59 size_t size; 60 int error; 61}; 62 63static const char *fio_server_ops[FIO_NET_CMD_NR] = { 64 "", 65 "QUIT", 66 "EXIT", 67 "JOB", 68 "JOBLINE", 69 "TEXT", 70 "TS", 71 "GS", 72 "SEND_ETA", 73 "ETA", 74 "PROBE", 75 "START", 76 "STOP", 77 "DISK_UTIL", 78 "SERVER_START", 79 "ADD_JOB", 80 "RUN", 81 "IOLOG", 82 "UPDATE_JOB", 83 "LOAD_FILE", 84 "VTRIGGER", 85 "SENDFILE", 86}; 87 88const char *fio_server_op(unsigned int op) 89{ 90 static char buf[32]; 91 92 if (op < FIO_NET_CMD_NR) 93 return fio_server_ops[op]; 94 95 sprintf(buf, "UNKNOWN/%d", op); 96 return buf; 97} 98 99static ssize_t iov_total_len(const struct iovec *iov, int count) 100{ 101 ssize_t ret = 0; 102 103 while (count--) { 104 ret += iov->iov_len; 105 iov++; 106 } 107 108 return ret; 109} 110 111static int fio_sendv_data(int sk, struct iovec *iov, int count) 112{ 113 ssize_t total_len = iov_total_len(iov, count); 114 ssize_t ret; 115 116 do { 117 ret = writev(sk, iov, count); 118 if (ret > 0) { 119 total_len -= ret; 120 if (!total_len) 121 break; 122 123 while (ret) { 124 if (ret >= iov->iov_len) { 125 ret -= iov->iov_len; 126 iov++; 127 continue; 128 } 129 iov->iov_base += ret; 130 iov->iov_len -= ret; 131 ret = 0; 132 } 133 } else if (!ret) 134 break; 135 else if (errno == EAGAIN || errno == EINTR) 136 continue; 137 else 138 break; 139 } while (!exit_backend); 140 141 if (!total_len) 142 return 0; 143 144 if (errno) 145 return -errno; 146 147 return 1; 148} 149 150int fio_send_data(int sk, const void *p, unsigned int len) 151{ 152 struct iovec iov = { .iov_base = (void *) p, .iov_len = len }; 153 154 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_FRAGMENT_PDU); 155 156 return fio_sendv_data(sk, &iov, 1); 157} 158 159int fio_recv_data(int sk, void *p, unsigned int len) 160{ 161 do { 162 int ret = recv(sk, p, len, MSG_WAITALL); 163 164 if (ret > 0) { 165 len -= ret; 166 if (!len) 167 break; 168 p += ret; 169 continue; 170 } else if (!ret) 171 break; 172 else if (errno == EAGAIN || errno == EINTR) 173 continue; 174 else 175 break; 176 } while (!exit_backend); 177 178 if (!len) 179 return 0; 180 181 return -1; 182} 183 184static int verify_convert_cmd(struct fio_net_cmd *cmd) 185{ 186 uint16_t crc; 187 188 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16); 189 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16); 190 191 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ); 192 if (crc != cmd->cmd_crc16) { 193 log_err("fio: server bad crc on command (got %x, wanted %x)\n", 194 cmd->cmd_crc16, crc); 195 return 1; 196 } 197 198 cmd->version = le16_to_cpu(cmd->version); 199 cmd->opcode = le16_to_cpu(cmd->opcode); 200 cmd->flags = le32_to_cpu(cmd->flags); 201 cmd->tag = le64_to_cpu(cmd->tag); 202 cmd->pdu_len = le32_to_cpu(cmd->pdu_len); 203 204 switch (cmd->version) { 205 case FIO_SERVER_VER: 206 break; 207 default: 208 log_err("fio: bad server cmd version %d\n", cmd->version); 209 return 1; 210 } 211 212 if (cmd->pdu_len > FIO_SERVER_MAX_FRAGMENT_PDU) { 213 log_err("fio: command payload too large: %u\n", cmd->pdu_len); 214 return 1; 215 } 216 217 return 0; 218} 219 220/* 221 * Read (and defragment, if necessary) incoming commands 222 */ 223struct fio_net_cmd *fio_net_recv_cmd(int sk) 224{ 225 struct fio_net_cmd cmd, *tmp, *cmdret = NULL; 226 size_t cmd_size = 0, pdu_offset = 0; 227 uint16_t crc; 228 int ret, first = 1; 229 void *pdu = NULL; 230 231 do { 232 ret = fio_recv_data(sk, &cmd, sizeof(cmd)); 233 if (ret) 234 break; 235 236 /* We have a command, verify it and swap if need be */ 237 ret = verify_convert_cmd(&cmd); 238 if (ret) 239 break; 240 241 if (first) { 242 /* if this is text, add room for \0 at the end */ 243 cmd_size = sizeof(cmd) + cmd.pdu_len + 1; 244 assert(!cmdret); 245 } else 246 cmd_size += cmd.pdu_len; 247 248 if (cmd_size / 1024 > FIO_SERVER_MAX_CMD_MB * 1024) { 249 log_err("fio: cmd+pdu too large (%llu)\n", (unsigned long long) cmd_size); 250 ret = 1; 251 break; 252 } 253 254 tmp = realloc(cmdret, cmd_size); 255 if (!tmp) { 256 log_err("fio: server failed allocating cmd\n"); 257 ret = 1; 258 break; 259 } 260 cmdret = tmp; 261 262 if (first) 263 memcpy(cmdret, &cmd, sizeof(cmd)); 264 else if (cmdret->opcode != cmd.opcode) { 265 log_err("fio: fragment opcode mismatch (%d != %d)\n", 266 cmdret->opcode, cmd.opcode); 267 ret = 1; 268 break; 269 } 270 271 if (!cmd.pdu_len) 272 break; 273 274 /* There's payload, get it */ 275 pdu = (void *) cmdret->payload + pdu_offset; 276 ret = fio_recv_data(sk, pdu, cmd.pdu_len); 277 if (ret) 278 break; 279 280 /* Verify payload crc */ 281 crc = fio_crc16(pdu, cmd.pdu_len); 282 if (crc != cmd.pdu_crc16) { 283 log_err("fio: server bad crc on payload "); 284 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc); 285 ret = 1; 286 break; 287 } 288 289 pdu_offset += cmd.pdu_len; 290 if (!first) 291 cmdret->pdu_len += cmd.pdu_len; 292 first = 0; 293 } while (cmd.flags & FIO_NET_CMD_F_MORE); 294 295 if (ret) { 296 free(cmdret); 297 cmdret = NULL; 298 } else if (cmdret) { 299 /* zero-terminate text input */ 300 if (cmdret->pdu_len) { 301 if (cmdret->opcode == FIO_NET_CMD_TEXT) { 302 struct cmd_text_pdu *__pdu = (struct cmd_text_pdu *) cmdret->payload; 303 char *buf = (char *) __pdu->buf; 304 305 buf[__pdu->buf_len] = '\0'; 306 } else if (cmdret->opcode == FIO_NET_CMD_JOB) { 307 struct cmd_job_pdu *__pdu = (struct cmd_job_pdu *) cmdret->payload; 308 char *buf = (char *) __pdu->buf; 309 int len = le32_to_cpu(__pdu->buf_len); 310 311 buf[len] = '\0'; 312 } 313 } 314 315 /* frag flag is internal */ 316 cmdret->flags &= ~FIO_NET_CMD_F_MORE; 317 } 318 319 return cmdret; 320} 321 322static void add_reply(uint64_t tag, struct flist_head *list) 323{ 324 struct fio_net_cmd_reply *reply; 325 326 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag; 327 flist_add_tail(&reply->list, list); 328} 329 330static uint64_t alloc_reply(uint64_t tag, uint16_t opcode) 331{ 332 struct fio_net_cmd_reply *reply; 333 334 reply = calloc(1, sizeof(*reply)); 335 INIT_FLIST_HEAD(&reply->list); 336 fio_gettime(&reply->tv, NULL); 337 reply->saved_tag = tag; 338 reply->opcode = opcode; 339 340 return (uintptr_t) reply; 341} 342 343static void free_reply(uint64_t tag) 344{ 345 struct fio_net_cmd_reply *reply; 346 347 reply = (struct fio_net_cmd_reply *) (uintptr_t) tag; 348 free(reply); 349} 350 351void fio_net_cmd_crc_pdu(struct fio_net_cmd *cmd, const void *pdu) 352{ 353 uint32_t pdu_len; 354 355 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ)); 356 357 pdu_len = le32_to_cpu(cmd->pdu_len); 358 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(pdu, pdu_len)); 359} 360 361void fio_net_cmd_crc(struct fio_net_cmd *cmd) 362{ 363 fio_net_cmd_crc_pdu(cmd, cmd->payload); 364} 365 366int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size, 367 uint64_t *tagptr, struct flist_head *list) 368{ 369 struct fio_net_cmd *cmd = NULL; 370 size_t this_len, cur_len = 0; 371 uint64_t tag; 372 int ret; 373 374 if (list) { 375 assert(tagptr); 376 tag = *tagptr = alloc_reply(*tagptr, opcode); 377 } else 378 tag = tagptr ? *tagptr : 0; 379 380 do { 381 this_len = size; 382 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU) 383 this_len = FIO_SERVER_MAX_FRAGMENT_PDU; 384 385 if (!cmd || cur_len < sizeof(*cmd) + this_len) { 386 if (cmd) 387 free(cmd); 388 389 cur_len = sizeof(*cmd) + this_len; 390 cmd = malloc(cur_len); 391 } 392 393 fio_init_net_cmd(cmd, opcode, buf, this_len, tag); 394 395 if (this_len < size) 396 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE); 397 398 fio_net_cmd_crc(cmd); 399 400 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len); 401 size -= this_len; 402 buf += this_len; 403 } while (!ret && size); 404 405 if (list) { 406 if (ret) 407 free_reply(tag); 408 else 409 add_reply(tag, list); 410 } 411 412 if (cmd) 413 free(cmd); 414 415 return ret; 416} 417 418static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag) 419{ 420 struct fio_net_cmd cmd; 421 422 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag); 423 fio_net_cmd_crc(&cmd); 424 425 return fio_send_data(sk, &cmd, sizeof(cmd)); 426} 427 428/* 429 * If 'list' is non-NULL, then allocate and store the sent command for 430 * later verification. 431 */ 432int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag, 433 struct flist_head *list) 434{ 435 int ret; 436 437 if (list) 438 tag = alloc_reply(tag, opcode); 439 440 ret = fio_net_send_simple_stack_cmd(sk, opcode, tag); 441 if (ret) { 442 if (list) 443 free_reply(tag); 444 445 return ret; 446 } 447 448 if (list) 449 add_reply(tag, list); 450 451 return 0; 452} 453 454int fio_net_send_quit(int sk) 455{ 456 dprint(FD_NET, "server: sending quit\n"); 457 458 return fio_net_send_simple_cmd(sk, FIO_NET_CMD_QUIT, 0, NULL); 459} 460 461static int fio_net_send_ack(int sk, struct fio_net_cmd *cmd, int error, 462 int signal) 463{ 464 struct cmd_end_pdu epdu; 465 uint64_t tag = 0; 466 467 if (cmd) 468 tag = cmd->tag; 469 470 epdu.error = __cpu_to_le32(error); 471 epdu.signal = __cpu_to_le32(signal); 472 return fio_net_send_cmd(sk, FIO_NET_CMD_STOP, &epdu, sizeof(epdu), &tag, NULL); 473} 474 475int fio_net_send_stop(int sk, int error, int signal) 476{ 477 dprint(FD_NET, "server: sending stop (%d, %d)\n", error, signal); 478 return fio_net_send_ack(sk, NULL, error, signal); 479} 480 481static void fio_server_add_fork_item(pid_t pid, struct flist_head *list) 482{ 483 struct fio_fork_item *ffi; 484 485 ffi = malloc(sizeof(*ffi)); 486 ffi->exitval = 0; 487 ffi->signal = 0; 488 ffi->exited = 0; 489 ffi->pid = pid; 490 flist_add_tail(&ffi->list, list); 491} 492 493static void fio_server_add_conn_pid(struct flist_head *conn_list, pid_t pid) 494{ 495 dprint(FD_NET, "server: forked off connection job (pid=%u)\n", (int) pid); 496 fio_server_add_fork_item(pid, conn_list); 497} 498 499static void fio_server_add_job_pid(struct flist_head *job_list, pid_t pid) 500{ 501 dprint(FD_NET, "server: forked off job job (pid=%u)\n", (int) pid); 502 fio_server_add_fork_item(pid, job_list); 503} 504 505static void fio_server_check_fork_item(struct fio_fork_item *ffi) 506{ 507 int ret, status; 508 509 ret = waitpid(ffi->pid, &status, WNOHANG); 510 if (ret < 0) { 511 if (errno == ECHILD) { 512 log_err("fio: connection pid %u disappeared\n", (int) ffi->pid); 513 ffi->exited = 1; 514 } else 515 log_err("fio: waitpid: %s\n", strerror(errno)); 516 } else if (ret == ffi->pid) { 517 if (WIFSIGNALED(status)) { 518 ffi->signal = WTERMSIG(status); 519 ffi->exited = 1; 520 } 521 if (WIFEXITED(status)) { 522 if (WEXITSTATUS(status)) 523 ffi->exitval = WEXITSTATUS(status); 524 ffi->exited = 1; 525 } 526 } 527} 528 529static void fio_server_fork_item_done(struct fio_fork_item *ffi) 530{ 531 dprint(FD_NET, "pid %u exited, sig=%u, exitval=%d\n", (int) ffi->pid, ffi->signal, ffi->exitval); 532 533 /* 534 * Fold STOP and QUIT... 535 */ 536 fio_net_send_stop(server_fd, ffi->exitval, ffi->signal); 537 fio_net_send_quit(server_fd); 538 flist_del(&ffi->list); 539 free(ffi); 540} 541 542static void fio_server_check_fork_items(struct flist_head *list) 543{ 544 struct flist_head *entry, *tmp; 545 struct fio_fork_item *ffi; 546 547 flist_for_each_safe(entry, tmp, list) { 548 ffi = flist_entry(entry, struct fio_fork_item, list); 549 550 fio_server_check_fork_item(ffi); 551 552 if (ffi->exited) 553 fio_server_fork_item_done(ffi); 554 } 555} 556 557static void fio_server_check_jobs(struct flist_head *job_list) 558{ 559 fio_server_check_fork_items(job_list); 560} 561 562static void fio_server_check_conns(struct flist_head *conn_list) 563{ 564 fio_server_check_fork_items(conn_list); 565} 566 567static int handle_load_file_cmd(struct fio_net_cmd *cmd) 568{ 569 struct cmd_load_file_pdu *pdu = (struct cmd_load_file_pdu *) cmd->payload; 570 void *file_name = pdu->file; 571 struct cmd_start_pdu spdu; 572 573 dprint(FD_NET, "server: loading local file %s\n", (char *) file_name); 574 575 pdu->name_len = le16_to_cpu(pdu->name_len); 576 pdu->client_type = le16_to_cpu(pdu->client_type); 577 578 if (parse_jobs_ini(file_name, 0, 0, pdu->client_type)) { 579 fio_net_send_quit(server_fd); 580 return -1; 581 } 582 583 spdu.jobs = cpu_to_le32(thread_number); 584 spdu.stat_outputs = cpu_to_le32(stat_number); 585 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, NULL); 586 return 0; 587} 588 589static int handle_run_cmd(struct flist_head *job_list, struct fio_net_cmd *cmd) 590{ 591 pid_t pid; 592 int ret; 593 594 fio_time_init(); 595 set_genesis_time(); 596 597 pid = fork(); 598 if (pid) { 599 fio_server_add_job_pid(job_list, pid); 600 return 0; 601 } 602 603 ret = fio_backend(); 604 free_threads_shm(); 605 _exit(ret); 606} 607 608static int handle_job_cmd(struct fio_net_cmd *cmd) 609{ 610 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmd->payload; 611 void *buf = pdu->buf; 612 struct cmd_start_pdu spdu; 613 614 pdu->buf_len = le32_to_cpu(pdu->buf_len); 615 pdu->client_type = le32_to_cpu(pdu->client_type); 616 617 if (parse_jobs_ini(buf, 1, 0, pdu->client_type)) { 618 fio_net_send_quit(server_fd); 619 return -1; 620 } 621 622 spdu.jobs = cpu_to_le32(thread_number); 623 spdu.stat_outputs = cpu_to_le32(stat_number); 624 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, NULL); 625 return 0; 626} 627 628static int handle_jobline_cmd(struct fio_net_cmd *cmd) 629{ 630 void *pdu = cmd->payload; 631 struct cmd_single_line_pdu *cslp; 632 struct cmd_line_pdu *clp; 633 unsigned long offset; 634 struct cmd_start_pdu spdu; 635 char **argv; 636 int i; 637 638 clp = pdu; 639 clp->lines = le16_to_cpu(clp->lines); 640 clp->client_type = le16_to_cpu(clp->client_type); 641 argv = malloc(clp->lines * sizeof(char *)); 642 offset = sizeof(*clp); 643 644 dprint(FD_NET, "server: %d command line args\n", clp->lines); 645 646 for (i = 0; i < clp->lines; i++) { 647 cslp = pdu + offset; 648 argv[i] = (char *) cslp->text; 649 650 offset += sizeof(*cslp) + le16_to_cpu(cslp->len); 651 dprint(FD_NET, "server: %d: %s\n", i, argv[i]); 652 } 653 654 if (parse_cmd_line(clp->lines, argv, clp->client_type)) { 655 fio_net_send_quit(server_fd); 656 free(argv); 657 return -1; 658 } 659 660 free(argv); 661 662 spdu.jobs = cpu_to_le32(thread_number); 663 spdu.stat_outputs = cpu_to_le32(stat_number); 664 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, NULL); 665 return 0; 666} 667 668static int handle_probe_cmd(struct fio_net_cmd *cmd) 669{ 670 struct cmd_client_probe_pdu *pdu = (struct cmd_client_probe_pdu *) cmd->payload; 671 struct cmd_probe_reply_pdu probe; 672 uint64_t tag = cmd->tag; 673 674 dprint(FD_NET, "server: sending probe reply\n"); 675 676 strcpy(me, (char *) pdu->server); 677 678 memset(&probe, 0, sizeof(probe)); 679 gethostname((char *) probe.hostname, sizeof(probe.hostname)); 680#ifdef CONFIG_BIG_ENDIAN 681 probe.bigendian = 1; 682#endif 683 strncpy((char *) probe.fio_version, fio_version_string, sizeof(probe.fio_version)); 684 685 probe.os = FIO_OS; 686 probe.arch = FIO_ARCH; 687 probe.bpp = sizeof(void *); 688 probe.cpus = __cpu_to_le32(cpus_online()); 689 690 /* 691 * If the client supports compression and we do too, then enable it 692 */ 693 if (has_zlib && le64_to_cpu(pdu->flags) & FIO_PROBE_FLAG_ZLIB) { 694 probe.flags = __cpu_to_le64(FIO_PROBE_FLAG_ZLIB); 695 use_zlib = 1; 696 } else { 697 probe.flags = 0; 698 use_zlib = 0; 699 } 700 701 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), &tag, NULL); 702} 703 704static int handle_send_eta_cmd(struct fio_net_cmd *cmd) 705{ 706 struct jobs_eta *je; 707 uint64_t tag = cmd->tag; 708 size_t size; 709 int i; 710 711 je = get_jobs_eta(1, &size); 712 if (!je) 713 return 0; 714 715 dprint(FD_NET, "server sending status\n"); 716 717 je->nr_running = cpu_to_le32(je->nr_running); 718 je->nr_ramp = cpu_to_le32(je->nr_ramp); 719 je->nr_pending = cpu_to_le32(je->nr_pending); 720 je->nr_setting_up = cpu_to_le32(je->nr_setting_up); 721 je->files_open = cpu_to_le32(je->files_open); 722 723 for (i = 0; i < DDIR_RWDIR_CNT; i++) { 724 je->m_rate[i] = cpu_to_le32(je->m_rate[i]); 725 je->t_rate[i] = cpu_to_le32(je->t_rate[i]); 726 je->m_iops[i] = cpu_to_le32(je->m_iops[i]); 727 je->t_iops[i] = cpu_to_le32(je->t_iops[i]); 728 je->rate[i] = cpu_to_le32(je->rate[i]); 729 je->iops[i] = cpu_to_le32(je->iops[i]); 730 } 731 732 je->elapsed_sec = cpu_to_le64(je->elapsed_sec); 733 je->eta_sec = cpu_to_le64(je->eta_sec); 734 je->nr_threads = cpu_to_le32(je->nr_threads); 735 je->is_pow2 = cpu_to_le32(je->is_pow2); 736 je->unit_base = cpu_to_le32(je->unit_base); 737 738 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, &tag, NULL); 739 free(je); 740 return 0; 741} 742 743static int send_update_job_reply(int fd, uint64_t __tag, int error) 744{ 745 uint64_t tag = __tag; 746 uint32_t pdu_error; 747 748 pdu_error = __cpu_to_le32(error); 749 return fio_net_send_cmd(fd, FIO_NET_CMD_UPDATE_JOB, &pdu_error, sizeof(pdu_error), &tag, NULL); 750} 751 752static int handle_update_job_cmd(struct fio_net_cmd *cmd) 753{ 754 struct cmd_add_job_pdu *pdu = (struct cmd_add_job_pdu *) cmd->payload; 755 struct thread_data *td; 756 uint32_t tnumber; 757 758 tnumber = le32_to_cpu(pdu->thread_number); 759 760 dprint(FD_NET, "server: updating options for job %u\n", tnumber); 761 762 if (!tnumber || tnumber > thread_number) { 763 send_update_job_reply(server_fd, cmd->tag, ENODEV); 764 return 0; 765 } 766 767 td = &threads[tnumber - 1]; 768 convert_thread_options_to_cpu(&td->o, &pdu->top); 769 send_update_job_reply(server_fd, cmd->tag, 0); 770 return 0; 771} 772 773static int handle_trigger_cmd(struct fio_net_cmd *cmd) 774{ 775 struct cmd_vtrigger_pdu *pdu = (struct cmd_vtrigger_pdu *) cmd->payload; 776 char *buf = (char *) pdu->cmd; 777 struct all_io_list *rep; 778 size_t sz; 779 780 pdu->len = le16_to_cpu(pdu->len); 781 buf[pdu->len] = '\0'; 782 783 rep = get_all_io_list(IO_LIST_ALL, &sz); 784 if (!rep) { 785 struct all_io_list state; 786 787 state.threads = cpu_to_le64((uint64_t) 0); 788 fio_net_send_cmd(server_fd, FIO_NET_CMD_VTRIGGER, &state, sizeof(state), NULL, NULL); 789 } else { 790 fio_net_send_cmd(server_fd, FIO_NET_CMD_VTRIGGER, rep, sz, NULL, NULL); 791 free(rep); 792 } 793 794 exec_trigger(buf); 795 return 0; 796} 797 798static int handle_command(struct flist_head *job_list, struct fio_net_cmd *cmd) 799{ 800 int ret; 801 802 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%llx\n", 803 fio_server_op(cmd->opcode), cmd->pdu_len, 804 (unsigned long long) cmd->tag); 805 806 switch (cmd->opcode) { 807 case FIO_NET_CMD_QUIT: 808 fio_terminate_threads(TERMINATE_ALL); 809 return -1; 810 case FIO_NET_CMD_EXIT: 811 exit_backend = 1; 812 return -1; 813 case FIO_NET_CMD_LOAD_FILE: 814 ret = handle_load_file_cmd(cmd); 815 break; 816 case FIO_NET_CMD_JOB: 817 ret = handle_job_cmd(cmd); 818 break; 819 case FIO_NET_CMD_JOBLINE: 820 ret = handle_jobline_cmd(cmd); 821 break; 822 case FIO_NET_CMD_PROBE: 823 ret = handle_probe_cmd(cmd); 824 break; 825 case FIO_NET_CMD_SEND_ETA: 826 ret = handle_send_eta_cmd(cmd); 827 break; 828 case FIO_NET_CMD_RUN: 829 ret = handle_run_cmd(job_list, cmd); 830 break; 831 case FIO_NET_CMD_UPDATE_JOB: 832 ret = handle_update_job_cmd(cmd); 833 break; 834 case FIO_NET_CMD_VTRIGGER: 835 ret = handle_trigger_cmd(cmd); 836 break; 837 case FIO_NET_CMD_SENDFILE: { 838 struct cmd_sendfile_reply *in; 839 struct cmd_reply *rep; 840 841 rep = (struct cmd_reply *) (uintptr_t) cmd->tag; 842 843 in = (struct cmd_sendfile_reply *) cmd->payload; 844 in->size = le32_to_cpu(in->size); 845 in->error = le32_to_cpu(in->error); 846 if (in->error) { 847 ret = 1; 848 rep->error = in->error; 849 } else { 850 ret = 0; 851 rep->data = smalloc(in->size); 852 if (!rep->data) { 853 ret = 1; 854 rep->error = ENOMEM; 855 } else { 856 rep->size = in->size; 857 memcpy(rep->data, in->data, in->size); 858 } 859 } 860 fio_mutex_up(&rep->lock); 861 break; 862 } 863 default: 864 log_err("fio: unknown opcode: %s\n", fio_server_op(cmd->opcode)); 865 ret = 1; 866 } 867 868 return ret; 869} 870 871static int handle_connection(int sk) 872{ 873 struct fio_net_cmd *cmd = NULL; 874 FLIST_HEAD(job_list); 875 int ret = 0; 876 877 reset_fio_state(); 878 server_fd = sk; 879 880 /* read forever */ 881 while (!exit_backend) { 882 struct pollfd pfd = { 883 .fd = sk, 884 .events = POLLIN, 885 }; 886 887 ret = 0; 888 do { 889 int timeout = 1000; 890 891 if (!flist_empty(&job_list)) 892 timeout = 100; 893 894 ret = poll(&pfd, 1, timeout); 895 if (ret < 0) { 896 if (errno == EINTR) 897 break; 898 log_err("fio: poll: %s\n", strerror(errno)); 899 break; 900 } else if (!ret) { 901 fio_server_check_jobs(&job_list); 902 continue; 903 } 904 905 if (pfd.revents & POLLIN) 906 break; 907 if (pfd.revents & (POLLERR|POLLHUP)) { 908 ret = 1; 909 break; 910 } 911 } while (!exit_backend); 912 913 fio_server_check_jobs(&job_list); 914 915 if (ret < 0) 916 break; 917 918 cmd = fio_net_recv_cmd(sk); 919 if (!cmd) { 920 ret = -1; 921 break; 922 } 923 924 ret = handle_command(&job_list, cmd); 925 if (ret) 926 break; 927 928 free(cmd); 929 cmd = NULL; 930 } 931 932 if (cmd) 933 free(cmd); 934 935 close(sk); 936 _exit(ret); 937} 938 939static int accept_loop(int listen_sk) 940{ 941 struct sockaddr_in addr; 942 struct sockaddr_in6 addr6; 943 socklen_t len = use_ipv6 ? sizeof(addr6) : sizeof(addr); 944 struct pollfd pfd; 945 int ret = 0, sk, exitval = 0; 946 FLIST_HEAD(conn_list); 947 948 dprint(FD_NET, "server enter accept loop\n"); 949 950 fio_set_fd_nonblocking(listen_sk, "server"); 951 952 while (!exit_backend) { 953 const char *from; 954 char buf[64]; 955 pid_t pid; 956 957 pfd.fd = listen_sk; 958 pfd.events = POLLIN; 959 do { 960 int timeout = 1000; 961 962 if (!flist_empty(&conn_list)) 963 timeout = 100; 964 965 ret = poll(&pfd, 1, timeout); 966 if (ret < 0) { 967 if (errno == EINTR) 968 break; 969 log_err("fio: poll: %s\n", strerror(errno)); 970 break; 971 } else if (!ret) { 972 fio_server_check_conns(&conn_list); 973 continue; 974 } 975 976 if (pfd.revents & POLLIN) 977 break; 978 } while (!exit_backend); 979 980 fio_server_check_conns(&conn_list); 981 982 if (exit_backend || ret < 0) 983 break; 984 985 if (use_ipv6) 986 sk = accept(listen_sk, (struct sockaddr *) &addr6, &len); 987 else 988 sk = accept(listen_sk, (struct sockaddr *) &addr, &len); 989 990 if (sk < 0) { 991 log_err("fio: accept: %s\n", strerror(errno)); 992 return -1; 993 } 994 995 if (use_ipv6) 996 from = inet_ntop(AF_INET6, (struct sockaddr *) &addr6.sin6_addr, buf, sizeof(buf)); 997 else 998 from = inet_ntop(AF_INET, (struct sockaddr *) &addr.sin_addr, buf, sizeof(buf)); 999 1000 dprint(FD_NET, "server: connect from %s\n", from); 1001 1002 pid = fork(); 1003 if (pid) { 1004 close(sk); 1005 fio_server_add_conn_pid(&conn_list, pid); 1006 continue; 1007 } 1008 1009 /* exits */ 1010 handle_connection(sk); 1011 } 1012 1013 return exitval; 1014} 1015 1016int fio_server_text_output(int level, const char *buf, size_t len) 1017{ 1018 struct cmd_text_pdu *pdu; 1019 unsigned int tlen; 1020 struct timeval tv; 1021 1022 if (server_fd == -1) 1023 return log_local_buf(buf, len); 1024 1025 tlen = sizeof(*pdu) + len; 1026 pdu = malloc(tlen); 1027 1028 pdu->level = __cpu_to_le32(level); 1029 pdu->buf_len = __cpu_to_le32(len); 1030 1031 gettimeofday(&tv, NULL); 1032 pdu->log_sec = __cpu_to_le64(tv.tv_sec); 1033 pdu->log_usec = __cpu_to_le64(tv.tv_usec); 1034 1035 memcpy(pdu->buf, buf, len); 1036 1037 fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, pdu, tlen, NULL, NULL); 1038 free(pdu); 1039 return len; 1040} 1041 1042static void convert_io_stat(struct io_stat *dst, struct io_stat *src) 1043{ 1044 dst->max_val = cpu_to_le64(src->max_val); 1045 dst->min_val = cpu_to_le64(src->min_val); 1046 dst->samples = cpu_to_le64(src->samples); 1047 1048 /* 1049 * Encode to IEEE 754 for network transfer 1050 */ 1051 dst->mean.u.i = cpu_to_le64(fio_double_to_uint64(src->mean.u.f)); 1052 dst->S.u.i = cpu_to_le64(fio_double_to_uint64(src->S.u.f)); 1053} 1054 1055static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src) 1056{ 1057 int i; 1058 1059 for (i = 0; i < DDIR_RWDIR_CNT; i++) { 1060 dst->max_run[i] = cpu_to_le64(src->max_run[i]); 1061 dst->min_run[i] = cpu_to_le64(src->min_run[i]); 1062 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]); 1063 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]); 1064 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]); 1065 dst->agg[i] = cpu_to_le64(src->agg[i]); 1066 } 1067 1068 dst->kb_base = cpu_to_le32(src->kb_base); 1069 dst->unit_base = cpu_to_le32(src->unit_base); 1070 dst->groupid = cpu_to_le32(src->groupid); 1071 dst->unified_rw_rep = cpu_to_le32(src->unified_rw_rep); 1072} 1073 1074/* 1075 * Send a CMD_TS, which packs struct thread_stat and group_run_stats 1076 * into a single payload. 1077 */ 1078void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs) 1079{ 1080 struct cmd_ts_pdu p; 1081 int i, j; 1082 1083 dprint(FD_NET, "server sending end stats\n"); 1084 1085 memset(&p, 0, sizeof(p)); 1086 1087 strncpy(p.ts.name, ts->name, FIO_JOBNAME_SIZE - 1); 1088 strncpy(p.ts.verror, ts->verror, FIO_VERROR_SIZE - 1); 1089 strncpy(p.ts.description, ts->description, FIO_JOBDESC_SIZE - 1); 1090 1091 p.ts.error = cpu_to_le32(ts->error); 1092 p.ts.thread_number = cpu_to_le32(ts->thread_number); 1093 p.ts.groupid = cpu_to_le32(ts->groupid); 1094 p.ts.pid = cpu_to_le32(ts->pid); 1095 p.ts.members = cpu_to_le32(ts->members); 1096 p.ts.unified_rw_rep = cpu_to_le32(ts->unified_rw_rep); 1097 1098 for (i = 0; i < DDIR_RWDIR_CNT; i++) { 1099 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]); 1100 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]); 1101 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]); 1102 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]); 1103 } 1104 1105 p.ts.usr_time = cpu_to_le64(ts->usr_time); 1106 p.ts.sys_time = cpu_to_le64(ts->sys_time); 1107 p.ts.ctx = cpu_to_le64(ts->ctx); 1108 p.ts.minf = cpu_to_le64(ts->minf); 1109 p.ts.majf = cpu_to_le64(ts->majf); 1110 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles); 1111 p.ts.percentile_precision = cpu_to_le64(ts->percentile_precision); 1112 1113 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) { 1114 fio_fp64_t *src = &ts->percentile_list[i]; 1115 fio_fp64_t *dst = &p.ts.percentile_list[i]; 1116 1117 dst->u.i = cpu_to_le64(fio_double_to_uint64(src->u.f)); 1118 } 1119 1120 for (i = 0; i < FIO_IO_U_MAP_NR; i++) { 1121 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]); 1122 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]); 1123 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]); 1124 } 1125 1126 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) { 1127 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]); 1128 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]); 1129 } 1130 1131 for (i = 0; i < DDIR_RWDIR_CNT; i++) 1132 for (j = 0; j < FIO_IO_U_PLAT_NR; j++) 1133 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]); 1134 1135 for (i = 0; i < DDIR_RWDIR_CNT; i++) { 1136 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]); 1137 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]); 1138 p.ts.drop_io_u[i] = cpu_to_le64(ts->drop_io_u[i]); 1139 } 1140 1141 p.ts.total_submit = cpu_to_le64(ts->total_submit); 1142 p.ts.total_complete = cpu_to_le64(ts->total_complete); 1143 1144 for (i = 0; i < DDIR_RWDIR_CNT; i++) { 1145 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]); 1146 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]); 1147 } 1148 1149 p.ts.total_run_time = cpu_to_le64(ts->total_run_time); 1150 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error); 1151 p.ts.total_err_count = cpu_to_le64(ts->total_err_count); 1152 p.ts.first_error = cpu_to_le32(ts->first_error); 1153 p.ts.kb_base = cpu_to_le32(ts->kb_base); 1154 p.ts.unit_base = cpu_to_le32(ts->unit_base); 1155 1156 p.ts.latency_depth = cpu_to_le32(ts->latency_depth); 1157 p.ts.latency_target = cpu_to_le64(ts->latency_target); 1158 p.ts.latency_window = cpu_to_le64(ts->latency_window); 1159 p.ts.latency_percentile.u.i = cpu_to_le64(fio_double_to_uint64(ts->latency_percentile.u.f)); 1160 1161 convert_gs(&p.rs, rs); 1162 1163 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), NULL, NULL); 1164} 1165 1166void fio_server_send_gs(struct group_run_stats *rs) 1167{ 1168 struct group_run_stats gs; 1169 1170 dprint(FD_NET, "server sending group run stats\n"); 1171 1172 convert_gs(&gs, rs); 1173 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), NULL, NULL); 1174} 1175 1176static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src) 1177{ 1178 int i; 1179 1180 for (i = 0; i < 2; i++) { 1181 dst->ios[i] = cpu_to_le64(src->ios[i]); 1182 dst->merges[i] = cpu_to_le64(src->merges[i]); 1183 dst->sectors[i] = cpu_to_le64(src->sectors[i]); 1184 dst->ticks[i] = cpu_to_le64(src->ticks[i]); 1185 } 1186 1187 dst->io_ticks = cpu_to_le64(src->io_ticks); 1188 dst->time_in_queue = cpu_to_le64(src->time_in_queue); 1189 dst->slavecount = cpu_to_le32(src->slavecount); 1190 dst->max_util.u.i = cpu_to_le64(fio_double_to_uint64(src->max_util.u.f)); 1191} 1192 1193static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src) 1194{ 1195 int i; 1196 1197 dst->name[FIO_DU_NAME_SZ - 1] = '\0'; 1198 strncpy((char *) dst->name, (char *) src->name, FIO_DU_NAME_SZ - 1); 1199 1200 for (i = 0; i < 2; i++) { 1201 dst->s.ios[i] = cpu_to_le64(src->s.ios[i]); 1202 dst->s.merges[i] = cpu_to_le64(src->s.merges[i]); 1203 dst->s.sectors[i] = cpu_to_le64(src->s.sectors[i]); 1204 dst->s.ticks[i] = cpu_to_le64(src->s.ticks[i]); 1205 } 1206 1207 dst->s.io_ticks = cpu_to_le64(src->s.io_ticks); 1208 dst->s.time_in_queue = cpu_to_le64(src->s.time_in_queue); 1209 dst->s.msec = cpu_to_le64(src->s.msec); 1210} 1211 1212void fio_server_send_du(void) 1213{ 1214 struct disk_util *du; 1215 struct flist_head *entry; 1216 struct cmd_du_pdu pdu; 1217 1218 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list)); 1219 1220 memset(&pdu, 0, sizeof(pdu)); 1221 1222 flist_for_each(entry, &disk_list) { 1223 du = flist_entry(entry, struct disk_util, list); 1224 1225 convert_dus(&pdu.dus, &du->dus); 1226 convert_agg(&pdu.agg, &du->agg); 1227 1228 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), NULL, NULL); 1229 } 1230} 1231 1232/* 1233 * Send a command with a separate PDU, not inlined in the command 1234 */ 1235static int fio_send_cmd_ext_pdu(int sk, uint16_t opcode, const void *buf, 1236 off_t size, uint64_t tag, uint32_t flags) 1237{ 1238 struct fio_net_cmd cmd; 1239 struct iovec iov[2]; 1240 1241 iov[0].iov_base = (void *) &cmd; 1242 iov[0].iov_len = sizeof(cmd); 1243 iov[1].iov_base = (void *) buf; 1244 iov[1].iov_len = size; 1245 1246 __fio_init_net_cmd(&cmd, opcode, size, tag); 1247 cmd.flags = __cpu_to_le32(flags); 1248 fio_net_cmd_crc_pdu(&cmd, buf); 1249 1250 return fio_sendv_data(sk, iov, 2); 1251} 1252 1253static int fio_send_iolog_gz(struct cmd_iolog_pdu *pdu, struct io_log *log) 1254{ 1255 int ret = 0; 1256#ifdef CONFIG_ZLIB 1257 z_stream stream; 1258 void *out_pdu; 1259 1260 /* 1261 * Dirty - since the log is potentially huge, compress it into 1262 * FIO_SERVER_MAX_FRAGMENT_PDU chunks and let the receiving 1263 * side defragment it. 1264 */ 1265 out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU); 1266 1267 stream.zalloc = Z_NULL; 1268 stream.zfree = Z_NULL; 1269 stream.opaque = Z_NULL; 1270 1271 if (deflateInit(&stream, Z_DEFAULT_COMPRESSION) != Z_OK) { 1272 ret = 1; 1273 goto err; 1274 } 1275 1276 stream.next_in = (void *) log->log; 1277 stream.avail_in = log->nr_samples * log_entry_sz(log); 1278 1279 do { 1280 unsigned int this_len, flags = 0; 1281 1282 stream.avail_out = FIO_SERVER_MAX_FRAGMENT_PDU; 1283 stream.next_out = out_pdu; 1284 ret = deflate(&stream, Z_FINISH); 1285 /* may be Z_OK, or Z_STREAM_END */ 1286 if (ret < 0) 1287 goto err_zlib; 1288 1289 this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream.avail_out; 1290 1291 if (stream.avail_in) 1292 flags = FIO_NET_CMD_F_MORE; 1293 1294 ret = fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG, 1295 out_pdu, this_len, 0, flags); 1296 if (ret) 1297 goto err_zlib; 1298 } while (stream.avail_in); 1299 1300err_zlib: 1301 deflateEnd(&stream); 1302err: 1303 free(out_pdu); 1304#endif 1305 return ret; 1306} 1307 1308int fio_send_iolog(struct thread_data *td, struct io_log *log, const char *name) 1309{ 1310 struct cmd_iolog_pdu pdu; 1311 int i, ret = 0; 1312 1313 pdu.nr_samples = cpu_to_le64(log->nr_samples); 1314 pdu.thread_number = cpu_to_le32(td->thread_number); 1315 pdu.log_type = cpu_to_le32(log->log_type); 1316 pdu.compressed = cpu_to_le32(use_zlib); 1317 1318 strncpy((char *) pdu.name, name, FIO_NET_NAME_MAX); 1319 pdu.name[FIO_NET_NAME_MAX - 1] = '\0'; 1320 1321 for (i = 0; i < log->nr_samples; i++) { 1322 struct io_sample *s = get_sample(log, i); 1323 1324 s->time = cpu_to_le64(s->time); 1325 s->val = cpu_to_le64(s->val); 1326 s->__ddir = cpu_to_le32(s->__ddir); 1327 s->bs = cpu_to_le32(s->bs); 1328 1329 if (log->log_offset) { 1330 struct io_sample_offset *so = (void *) s; 1331 1332 so->offset = cpu_to_le64(so->offset); 1333 } 1334 } 1335 1336 /* 1337 * Send header first, it's not compressed. 1338 */ 1339 ret = fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG, &pdu, 1340 sizeof(pdu), 0, FIO_NET_CMD_F_MORE); 1341 if (ret) 1342 return ret; 1343 1344 /* 1345 * Now send actual log, compress if we can, otherwise just plain 1346 */ 1347 if (use_zlib) 1348 return fio_send_iolog_gz(&pdu, log); 1349 1350 return fio_send_cmd_ext_pdu(server_fd, FIO_NET_CMD_IOLOG, log->log, 1351 log->nr_samples * log_entry_sz(log), 0, 0); 1352} 1353 1354void fio_server_send_add_job(struct thread_data *td) 1355{ 1356 struct cmd_add_job_pdu pdu; 1357 1358 memset(&pdu, 0, sizeof(pdu)); 1359 pdu.thread_number = cpu_to_le32(td->thread_number); 1360 pdu.groupid = cpu_to_le32(td->groupid); 1361 convert_thread_options_to_net(&pdu.top, &td->o); 1362 1363 fio_net_send_cmd(server_fd, FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), NULL, NULL); 1364} 1365 1366void fio_server_send_start(struct thread_data *td) 1367{ 1368 assert(server_fd != -1); 1369 1370 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_SERVER_START, 0, NULL); 1371} 1372 1373int fio_server_get_verify_state(const char *name, int threadnumber, 1374 void **datap) 1375{ 1376 struct thread_io_list *s; 1377 struct cmd_sendfile out; 1378 struct cmd_reply *rep; 1379 uint64_t tag; 1380 void *data; 1381 1382 dprint(FD_NET, "server: request verify state\n"); 1383 1384 rep = smalloc(sizeof(*rep)); 1385 if (!rep) { 1386 log_err("fio: smalloc pool too small\n"); 1387 return 1; 1388 } 1389 1390 __fio_mutex_init(&rep->lock, FIO_MUTEX_LOCKED); 1391 rep->data = NULL; 1392 rep->error = 0; 1393 1394 verify_state_gen_name((char *) out.path, sizeof(out.path), name, me, 1395 threadnumber); 1396 tag = (uint64_t) (uintptr_t) rep; 1397 fio_net_send_cmd(server_fd, FIO_NET_CMD_SENDFILE, &out, sizeof(out), 1398 &tag, NULL); 1399 1400 /* 1401 * Wait for the backend to receive the reply 1402 */ 1403 if (fio_mutex_down_timeout(&rep->lock, 10)) { 1404 log_err("fio: timed out waiting for reply\n"); 1405 goto fail; 1406 } 1407 1408 if (rep->error) { 1409 log_err("fio: failure on receiving state file: %s\n", strerror(rep->error)); 1410fail: 1411 *datap = NULL; 1412 sfree(rep); 1413 fio_net_send_quit(server_fd); 1414 return 1; 1415 } 1416 1417 /* 1418 * The format is verify_state_hdr, then thread_io_list. Verify 1419 * the header, and the thread_io_list checksum 1420 */ 1421 s = rep->data + sizeof(struct verify_state_hdr); 1422 if (verify_state_hdr(rep->data, s)) 1423 goto fail; 1424 1425 /* 1426 * Don't need the header from now, copy just the thread_io_list 1427 */ 1428 rep->size -= sizeof(struct verify_state_hdr); 1429 data = malloc(rep->size); 1430 memcpy(data, s, rep->size); 1431 *datap = data; 1432 1433 sfree(rep->data); 1434 __fio_mutex_remove(&rep->lock); 1435 sfree(rep); 1436 return 0; 1437} 1438 1439static int fio_init_server_ip(void) 1440{ 1441 struct sockaddr *addr; 1442 socklen_t socklen; 1443 char buf[80]; 1444 const char *str; 1445 int sk, opt; 1446 1447 if (use_ipv6) 1448 sk = socket(AF_INET6, SOCK_STREAM, 0); 1449 else 1450 sk = socket(AF_INET, SOCK_STREAM, 0); 1451 1452 if (sk < 0) { 1453 log_err("fio: socket: %s\n", strerror(errno)); 1454 return -1; 1455 } 1456 1457 opt = 1; 1458 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, (void *)&opt, sizeof(opt)) < 0) { 1459 log_err("fio: setsockopt: %s\n", strerror(errno)); 1460 close(sk); 1461 return -1; 1462 } 1463#ifdef SO_REUSEPORT 1464 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) { 1465 log_err("fio: setsockopt: %s\n", strerror(errno)); 1466 close(sk); 1467 return -1; 1468 } 1469#endif 1470 1471 if (use_ipv6) { 1472 const void *src = &saddr_in6.sin6_addr; 1473 1474 addr = (struct sockaddr *) &saddr_in6; 1475 socklen = sizeof(saddr_in6); 1476 saddr_in6.sin6_family = AF_INET6; 1477 str = inet_ntop(AF_INET6, src, buf, sizeof(buf)); 1478 } else { 1479 const void *src = &saddr_in.sin_addr; 1480 1481 addr = (struct sockaddr *) &saddr_in; 1482 socklen = sizeof(saddr_in); 1483 saddr_in.sin_family = AF_INET; 1484 str = inet_ntop(AF_INET, src, buf, sizeof(buf)); 1485 } 1486 1487 if (bind(sk, addr, socklen) < 0) { 1488 log_err("fio: bind: %s\n", strerror(errno)); 1489 log_info("fio: failed with IPv%c %s\n", use_ipv6 ? '6' : '4', str); 1490 close(sk); 1491 return -1; 1492 } 1493 1494 return sk; 1495} 1496 1497static int fio_init_server_sock(void) 1498{ 1499 struct sockaddr_un addr; 1500 socklen_t len; 1501 mode_t mode; 1502 int sk; 1503 1504 sk = socket(AF_UNIX, SOCK_STREAM, 0); 1505 if (sk < 0) { 1506 log_err("fio: socket: %s\n", strerror(errno)); 1507 return -1; 1508 } 1509 1510 mode = umask(000); 1511 1512 memset(&addr, 0, sizeof(addr)); 1513 addr.sun_family = AF_UNIX; 1514 strncpy(addr.sun_path, bind_sock, sizeof(addr.sun_path) - 1); 1515 1516 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1; 1517 1518 if (bind(sk, (struct sockaddr *) &addr, len) < 0) { 1519 log_err("fio: bind: %s\n", strerror(errno)); 1520 close(sk); 1521 return -1; 1522 } 1523 1524 umask(mode); 1525 return sk; 1526} 1527 1528static int fio_init_server_connection(void) 1529{ 1530 char bind_str[128]; 1531 int sk; 1532 1533 dprint(FD_NET, "starting server\n"); 1534 1535 if (!bind_sock) 1536 sk = fio_init_server_ip(); 1537 else 1538 sk = fio_init_server_sock(); 1539 1540 if (sk < 0) 1541 return sk; 1542 1543 memset(bind_str, 0, sizeof(bind_str)); 1544 1545 if (!bind_sock) { 1546 char *p, port[16]; 1547 const void *src; 1548 int af; 1549 1550 if (use_ipv6) { 1551 af = AF_INET6; 1552 src = &saddr_in6.sin6_addr; 1553 } else { 1554 af = AF_INET; 1555 src = &saddr_in.sin_addr; 1556 } 1557 1558 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str)); 1559 1560 sprintf(port, ",%u", fio_net_port); 1561 if (p) 1562 strcat(p, port); 1563 else 1564 strncpy(bind_str, port, sizeof(bind_str) - 1); 1565 } else 1566 strncpy(bind_str, bind_sock, sizeof(bind_str) - 1); 1567 1568 log_info("fio: server listening on %s\n", bind_str); 1569 1570 if (listen(sk, 0) < 0) { 1571 log_err("fio: listen: %s\n", strerror(errno)); 1572 close(sk); 1573 return -1; 1574 } 1575 1576 return sk; 1577} 1578 1579int fio_server_parse_host(const char *host, int ipv6, struct in_addr *inp, 1580 struct in6_addr *inp6) 1581 1582{ 1583 int ret = 0; 1584 1585 if (ipv6) 1586 ret = inet_pton(AF_INET6, host, inp6); 1587 else 1588 ret = inet_pton(AF_INET, host, inp); 1589 1590 if (ret != 1) { 1591 struct addrinfo hints, *res; 1592 1593 memset(&hints, 0, sizeof(hints)); 1594 hints.ai_family = ipv6 ? AF_INET6 : AF_INET; 1595 hints.ai_socktype = SOCK_STREAM; 1596 1597 ret = getaddrinfo(host, NULL, &hints, &res); 1598 if (ret) { 1599 log_err("fio: failed to resolve <%s> (%s)\n", host, 1600 gai_strerror(ret)); 1601 return 1; 1602 } 1603 1604 if (ipv6) 1605 memcpy(inp6, &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr, sizeof(*inp6)); 1606 else 1607 memcpy(inp, &((struct sockaddr_in *) res->ai_addr)->sin_addr, sizeof(*inp)); 1608 1609 ret = 1; 1610 freeaddrinfo(res); 1611 } 1612 1613 return !(ret == 1); 1614} 1615 1616/* 1617 * Parse a host/ip/port string. Reads from 'str'. 1618 * 1619 * Outputs: 1620 * 1621 * For IPv4: 1622 * *ptr is the host, *port is the port, inp is the destination. 1623 * For IPv6: 1624 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1. 1625 * For local domain sockets: 1626 * *ptr is the filename, *is_sock is 1. 1627 */ 1628int fio_server_parse_string(const char *str, char **ptr, int *is_sock, 1629 int *port, struct in_addr *inp, 1630 struct in6_addr *inp6, int *ipv6) 1631{ 1632 const char *host = str; 1633 char *portp; 1634 int lport = 0; 1635 1636 *ptr = NULL; 1637 *is_sock = 0; 1638 *port = fio_net_port; 1639 *ipv6 = 0; 1640 1641 if (!strncmp(str, "sock:", 5)) { 1642 *ptr = strdup(str + 5); 1643 *is_sock = 1; 1644 1645 return 0; 1646 } 1647 1648 /* 1649 * Is it ip:<ip or host>:port 1650 */ 1651 if (!strncmp(host, "ip:", 3)) 1652 host += 3; 1653 else if (!strncmp(host, "ip4:", 4)) 1654 host += 4; 1655 else if (!strncmp(host, "ip6:", 4)) { 1656 host += 4; 1657 *ipv6 = 1; 1658 } else if (host[0] == ':') { 1659 /* String is :port */ 1660 host++; 1661 lport = atoi(host); 1662 if (!lport || lport > 65535) { 1663 log_err("fio: bad server port %u\n", lport); 1664 return 1; 1665 } 1666 /* no hostname given, we are done */ 1667 *port = lport; 1668 return 0; 1669 } 1670 1671 /* 1672 * If no port seen yet, check if there's a last ',' at the end 1673 */ 1674 if (!lport) { 1675 portp = strchr(host, ','); 1676 if (portp) { 1677 *portp = '\0'; 1678 portp++; 1679 lport = atoi(portp); 1680 if (!lport || lport > 65535) { 1681 log_err("fio: bad server port %u\n", lport); 1682 return 1; 1683 } 1684 } 1685 } 1686 1687 if (lport) 1688 *port = lport; 1689 1690 if (!strlen(host)) 1691 return 0; 1692 1693 *ptr = strdup(host); 1694 1695 if (fio_server_parse_host(*ptr, *ipv6, inp, inp6)) { 1696 free(*ptr); 1697 *ptr = NULL; 1698 return 1; 1699 } 1700 1701 if (*port == 0) 1702 *port = fio_net_port; 1703 1704 return 0; 1705} 1706 1707/* 1708 * Server arg should be one of: 1709 * 1710 * sock:/path/to/socket 1711 * ip:1.2.3.4 1712 * 1.2.3.4 1713 * 1714 * Where sock uses unix domain sockets, and ip binds the server to 1715 * a specific interface. If no arguments are given to the server, it 1716 * uses IP and binds to 0.0.0.0. 1717 * 1718 */ 1719static int fio_handle_server_arg(void) 1720{ 1721 int port = fio_net_port; 1722 int is_sock, ret = 0; 1723 1724 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY); 1725 1726 if (!fio_server_arg) 1727 goto out; 1728 1729 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock, 1730 &port, &saddr_in.sin_addr, 1731 &saddr_in6.sin6_addr, &use_ipv6); 1732 1733 if (!is_sock && bind_sock) { 1734 free(bind_sock); 1735 bind_sock = NULL; 1736 } 1737 1738out: 1739 fio_net_port = port; 1740 saddr_in.sin_port = htons(port); 1741 saddr_in6.sin6_port = htons(port); 1742 return ret; 1743} 1744 1745static void sig_int(int sig) 1746{ 1747 if (bind_sock) 1748 unlink(bind_sock); 1749} 1750 1751static void set_sig_handlers(void) 1752{ 1753 struct sigaction act; 1754 1755 memset(&act, 0, sizeof(act)); 1756 act.sa_handler = sig_int; 1757 act.sa_flags = SA_RESTART; 1758 sigaction(SIGINT, &act, NULL); 1759} 1760 1761static int fio_server(void) 1762{ 1763 int sk, ret; 1764 1765 dprint(FD_NET, "starting server\n"); 1766 1767 if (fio_handle_server_arg()) 1768 return -1; 1769 1770 sk = fio_init_server_connection(); 1771 if (sk < 0) 1772 return -1; 1773 1774 set_sig_handlers(); 1775 1776 ret = accept_loop(sk); 1777 1778 close(sk); 1779 1780 if (fio_server_arg) { 1781 free(fio_server_arg); 1782 fio_server_arg = NULL; 1783 } 1784 if (bind_sock) 1785 free(bind_sock); 1786 1787 return ret; 1788} 1789 1790void fio_server_got_signal(int signal) 1791{ 1792 if (signal == SIGPIPE) 1793 server_fd = -1; 1794 else { 1795 log_info("\nfio: terminating on signal %d\n", signal); 1796 exit_backend = 1; 1797 } 1798} 1799 1800static int check_existing_pidfile(const char *pidfile) 1801{ 1802 struct stat sb; 1803 char buf[16]; 1804 pid_t pid; 1805 FILE *f; 1806 1807 if (stat(pidfile, &sb)) 1808 return 0; 1809 1810 f = fopen(pidfile, "r"); 1811 if (!f) 1812 return 0; 1813 1814 if (fread(buf, sb.st_size, 1, f) <= 0) { 1815 fclose(f); 1816 return 1; 1817 } 1818 fclose(f); 1819 1820 pid = atoi(buf); 1821 if (kill(pid, SIGCONT) < 0) 1822 return errno != ESRCH; 1823 1824 return 1; 1825} 1826 1827static int write_pid(pid_t pid, const char *pidfile) 1828{ 1829 FILE *fpid; 1830 1831 fpid = fopen(pidfile, "w"); 1832 if (!fpid) { 1833 log_err("fio: failed opening pid file %s\n", pidfile); 1834 return 1; 1835 } 1836 1837 fprintf(fpid, "%u\n", (unsigned int) pid); 1838 fclose(fpid); 1839 return 0; 1840} 1841 1842/* 1843 * If pidfile is specified, background us. 1844 */ 1845int fio_start_server(char *pidfile) 1846{ 1847 pid_t pid; 1848 int ret; 1849 1850#if defined(WIN32) 1851 WSADATA wsd; 1852 WSAStartup(MAKEWORD(2, 2), &wsd); 1853#endif 1854 1855 if (!pidfile) 1856 return fio_server(); 1857 1858 if (check_existing_pidfile(pidfile)) { 1859 log_err("fio: pidfile %s exists and server appears alive\n", 1860 pidfile); 1861 free(pidfile); 1862 return -1; 1863 } 1864 1865 pid = fork(); 1866 if (pid < 0) { 1867 log_err("fio: failed server fork: %s", strerror(errno)); 1868 free(pidfile); 1869 return -1; 1870 } else if (pid) { 1871 ret = write_pid(pid, pidfile); 1872 free(pidfile); 1873 _exit(ret); 1874 } 1875 1876 setsid(); 1877 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER); 1878 log_syslog = 1; 1879 close(STDIN_FILENO); 1880 close(STDOUT_FILENO); 1881 close(STDERR_FILENO); 1882 f_out = NULL; 1883 f_err = NULL; 1884 1885 ret = fio_server(); 1886 1887 closelog(); 1888 unlink(pidfile); 1889 free(pidfile); 1890 return ret; 1891} 1892 1893void fio_server_set_arg(const char *arg) 1894{ 1895 fio_server_arg = strdup(arg); 1896} 1897