client.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <limits.h>
   5 #include <errno.h>
   6 #include <fcntl.h>
   7 #include <sys/poll.h>
   8 #include <sys/types.h>
   9 #include <sys/stat.h>
  10 #include <sys/wait.h>
  11 #include <sys/socket.h>
  12 #include <sys/un.h>
  13 #include <netinet/in.h>
  14 #include <arpa/inet.h>
  15 #include <netdb.h>
  16 #include <signal.h>
  17 #ifdef CONFIG_ZLIB
  18 #include <zlib.h>
  19 #endif
  20
  21 #include "fio.h"
  22 #include "client.h"
  23 #include "server.h"
  24 #include "flist.h"
  25 #include "hash.h"
  26 #include "verify.h"
  27
  28 static void handle_du(struct fio_client *client, struct fio_net_cmd *cmd);
  29 static void handle_ts(struct fio_client *client, struct fio_net_cmd *cmd);
  30 static void handle_gs(struct fio_client *client, struct fio_net_cmd *cmd);
  31 static void handle_probe(struct fio_client *client, struct fio_net_cmd *cmd);
  32 static void handle_text(struct fio_client *client, struct fio_net_cmd *cmd);
  33 static void handle_stop(struct fio_client *client, struct fio_net_cmd *cmd);
  34 static void handle_start(struct fio_client *client, struct fio_net_cmd *cmd);
  35
  36 struct client_ops fio_client_ops = {
  37         .text           = handle_text,
  38         .disk_util      = handle_du,
  39         .thread_status  = handle_ts,
  40         .group_stats    = handle_gs,
  41         .stop           = handle_stop,
  42         .start          = handle_start,
  43         .eta            = display_thread_status,
  44         .probe          = handle_probe,
  45         .eta_msec       = FIO_CLIENT_DEF_ETA_MSEC,
  46         .client_type    = FIO_CLIENT_TYPE_CLI,
  47 };
  48
  49 static struct timeval eta_tv;
  50
  51 static FLIST_HEAD(client_list);
  52 static FLIST_HEAD(eta_list);
  53
  54 static FLIST_HEAD(arg_list);
  55
  56 struct thread_stat client_ts;
  57 struct group_run_stats client_gs;
  58 int sum_stat_clients;
  59
  60 static int sum_stat_nr;
  61 static struct json_object *root = NULL;
  62 static struct json_array *clients_array = NULL;
  63 static struct json_array *du_array = NULL;
  64
  65 static int error_clients;
  66
  67 #define FIO_CLIENT_HASH_BITS    7
  68 #define FIO_CLIENT_HASH_SZ      (1 << FIO_CLIENT_HASH_BITS)
  69 #define FIO_CLIENT_HASH_MASK    (FIO_CLIENT_HASH_SZ - 1)
  70 static struct flist_head client_hash[FIO_CLIENT_HASH_SZ];
  71
  72 static void fio_client_add_hash(struct fio_client *client)
  73 {
  74         int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);
  75
  76         bucket &= FIO_CLIENT_HASH_MASK;
  77         flist_add(&client->hash_list, &client_hash[bucket]);
  78 }
  79
  80 static void fio_client_remove_hash(struct fio_client *client)
  81 {
  82         if (!flist_empty(&client->hash_list))
  83                 flist_del_init(&client->hash_list);
  84 }
  85
  86 static void fio_init fio_client_hash_init(void)
  87 {
  88         int i;
  89
  90         for (i = 0; i < FIO_CLIENT_HASH_SZ; i++)
  91                 INIT_FLIST_HEAD(&client_hash[i]);
  92 }
  93
  94 static int read_data(int fd, void *data, size_t size)
  95 {
  96         ssize_t ret;
  97
  98         while (size) {
  99                 ret = read(fd, data, size);
 100                 if (ret < 0) {
 101                         if (errno == EAGAIN || errno == EINTR)
 102                                 continue;
 103                         break;
 104                 } else if (!ret)
 105                         break;
 106                 else {
 107                         data += ret;
 108                         size -= ret;
 109                 }
 110         }
 111
 112         if (size)
 113                 return EAGAIN;
 114
 115         return 0;
 116 }
 117
 118 static void fio_client_json_init(void)
 119 {
 120         if (output_format != FIO_OUTPUT_JSON)
 121                 return;
 122         root = json_create_object();
 123         json_object_add_value_string(root, "fio version", fio_version_string);
 124         clients_array = json_create_array();
 125         json_object_add_value_array(root, "client_stats", clients_array);
 126         du_array = json_create_array();
 127         json_object_add_value_array(root, "disk_util", du_array);
 128 }
 129
 130 static void fio_client_json_fini(void)
 131 {
 132         if (output_format != FIO_OUTPUT_JSON)
 133                 return;
 134         json_print_object(root);
 135         log_info("\n");
 136         json_free_object(root);
 137         root = NULL;
 138         clients_array = NULL;
 139         du_array = NULL;
 140 }
 141
 142 static struct fio_client *find_client_by_fd(int fd)
 143 {
 144         int bucket = hash_long(fd, FIO_CLIENT_HASH_BITS) & FIO_CLIENT_HASH_MASK;
 145         struct fio_client *client;
 146         struct flist_head *entry;
 147
 148         flist_for_each(entry, &client_hash[bucket]) {
 149                 client = flist_entry(entry, struct fio_client, hash_list);
 150
 151                 if (client->fd == fd) {
 152                         client->refs++;
 153                         return client;
 154                 }
 155         }
 156
 157         return NULL;
 158 }
 159
 160 void fio_put_client(struct fio_client *client)
 161 {
 162         if (--client->refs)
 163                 return;
 164
 165         free(client->hostname);
 166         if (client->argv)
 167                 free(client->argv);
 168         if (client->name)
 169                 free(client->name);
 170         while (client->nr_files) {
 171                 struct client_file *cf = &client->files[--client->nr_files];
 172
 173                 free(cf->file);
 174         }
 175         if (client->files)
 176                 free(client->files);
 177
 178         if (!client->did_stat)
 179                 sum_stat_clients--;
 180
 181         if (client->error)
 182                 error_clients++;
 183
 184         free(client);
 185 }
 186
 187 static int fio_client_dec_jobs_eta(struct client_eta *eta, client_eta_op eta_fn)
 188 {
 189         if (!--eta->pending) {
 190                 eta_fn(&eta->eta);
 191                 free(eta);
 192                 return 0;
 193         }
 194
 195         return 1;
 196 }
 197
 198 static void remove_client(struct fio_client *client)
 199 {
 200         assert(client->refs);
 201
 202         dprint(FD_NET, "client: removed <%s>\n", client->hostname);
 203
 204         if (!flist_empty(&client->list))
 205                 flist_del_init(&client->list);
 206
 207         fio_client_remove_hash(client);
 208
 209         if (!flist_empty(&client->eta_list)) {
 210                 flist_del_init(&client->eta_list);
 211                 fio_client_dec_jobs_eta(client->eta_in_flight, client->ops->eta);
 212         }
 213
 214         close(client->fd);
 215         client->fd = -1;
 216
 217         if (client->ops->removed)
 218                 client->ops->removed(client);
 219
 220         nr_clients--;
 221         fio_put_client(client);
 222 }
 223
 224 struct fio_client *fio_get_client(struct fio_client *client)
 225 {
 226         client->refs++;
 227         return client;
 228 }
 229
 230 static void __fio_client_add_cmd_option(struct fio_client *client,
 231                                         const char *opt)
 232 {
 233         int index;
 234
 235         index = client->argc++;
 236         client->argv = realloc(client->argv, sizeof(char *) * client->argc);
 237         client->argv[index] = strdup(opt);
 238         dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
 239 }
 240
 241 void fio_client_add_cmd_option(void *cookie, const char *opt)
 242 {
 243         struct fio_client *client = cookie;
 244         struct flist_head *entry;
 245
 246         if (!client || !opt)
 247                 return;
 248
 249         __fio_client_add_cmd_option(client, opt);
 250
 251         /*
 252          * Duplicate arguments to shared client group
 253          */
 254         flist_for_each(entry, &arg_list) {
 255                 client = flist_entry(entry, struct fio_client, arg_list);
 256
 257                 __fio_client_add_cmd_option(client, opt);
 258         }
 259 }
 260
 261 struct fio_client *fio_client_add_explicit(struct client_ops *ops,
 262                                            const char *hostname, int type,
 263                                            int port)
 264 {
 265         struct fio_client *client;
 266
 267         client = malloc(sizeof(*client));
 268         memset(client, 0, sizeof(*client));
 269
 270         INIT_FLIST_HEAD(&client->list);
 271         INIT_FLIST_HEAD(&client->hash_list);
 272         INIT_FLIST_HEAD(&client->arg_list);
 273         INIT_FLIST_HEAD(&client->eta_list);
 274         INIT_FLIST_HEAD(&client->cmd_list);
 275
 276         client->hostname = strdup(hostname);
 277
 278         if (type == Fio_client_socket)
 279                 client->is_sock = 1;
 280         else {
 281                 int ipv6;
 282
 283                 ipv6 = type == Fio_client_ipv6;
 284                 if (fio_server_parse_host(hostname, ipv6,
 285                                                 &client->addr.sin_addr,
 286                                                 &client->addr6.sin6_addr))
 287                         goto err;
 288
 289                 client->port = port;
 290         }
 291
 292         client->fd = -1;
 293         client->ops = ops;
 294         client->refs = 1;
 295         client->type = ops->client_type;
 296
 297         __fio_client_add_cmd_option(client, "fio");
 298
 299         flist_add(&client->list, &client_list);
 300         nr_clients++;
 301         dprint(FD_NET, "client: added <%s>\n", client->hostname);
 302         return client;
 303 err:
 304         free(client);
 305         return NULL;
 306 }
 307
 308 int fio_client_add_ini_file(void *cookie, const char *ini_file, int remote)
 309 {
 310         struct fio_client *client = cookie;
 311         struct client_file *cf;
 312         size_t new_size;
 313         void *new_files;
 314
 315         if (!client)
 316                 return 1;
 317
 318         dprint(FD_NET, "client <%s>: add ini %s\n", client->hostname, ini_file);
 319
 320         new_size = (client->nr_files + 1) * sizeof(struct client_file);
 321         new_files = realloc(client->files, new_size);
 322         if (!new_files)
 323                 return 1;
 324
 325         client->files = new_files;
 326         cf = &client->files[client->nr_files];
 327         cf->file = strdup(ini_file);
 328         cf->remote = remote;
 329         client->nr_files++;
 330         return 0;
 331 }
 332
 333 int fio_client_add(struct client_ops *ops, const char *hostname, void **cookie)
 334 {
 335         struct fio_client *existing = *cookie;
 336         struct fio_client *client;
 337
 338         if (existing) {
 339                 /*
 340                  * We always add our "exec" name as the option, hence 1
 341                  * means empty.
 342                  */
 343                 if (existing->argc == 1)
 344                         flist_add_tail(&existing->arg_list, &arg_list);
 345                 else {
 346                         while (!flist_empty(&arg_list))
 347                                 flist_del_init(arg_list.next);
 348                 }
 349         }
 350
 351         client = malloc(sizeof(*client));
 352         memset(client, 0, sizeof(*client));
 353
 354         INIT_FLIST_HEAD(&client->list);
 355         INIT_FLIST_HEAD(&client->hash_list);
 356         INIT_FLIST_HEAD(&client->arg_list);
 357         INIT_FLIST_HEAD(&client->eta_list);
 358         INIT_FLIST_HEAD(&client->cmd_list);
 359
 360         if (fio_server_parse_string(hostname, &client->hostname,
 361                                         &client->is_sock, &client->port,
 362                                         &client->addr.sin_addr,
 363                                         &client->addr6.sin6_addr,
 364                                         &client->ipv6))
 365                 return -1;
 366
 367         client->fd = -1;
 368         client->ops = ops;
 369         client->refs = 1;
 370         client->type = ops->client_type;
 371
 372         __fio_client_add_cmd_option(client, "fio");
 373
 374         flist_add(&client->list, &client_list);
 375         nr_clients++;
 376         dprint(FD_NET, "client: added <%s>\n", client->hostname);
 377         *cookie = client;
 378         return 0;
 379 }
 380
 381 static const char *server_name(struct fio_client *client, char *buf,
 382                                size_t bufsize)
 383 {
 384         const char *from;
 385
 386         if (client->ipv6)
 387                 from = inet_ntop(AF_INET6, (struct sockaddr *) &client->addr6.sin6_addr, buf, bufsize);
 388         else if (client->is_sock)
 389                 from = "sock";
 390         else
 391                 from = inet_ntop(AF_INET, (struct sockaddr *) &client->addr.sin_addr, buf, bufsize);
 392
 393         return from;
 394 }
 395
 396 static void probe_client(struct fio_client *client)
 397 {
 398         struct cmd_client_probe_pdu pdu;
 399         const char *sname;
 400         uint64_t tag;
 401         char buf[64];
 402
 403         dprint(FD_NET, "client: send probe\n");
 404
 405 #ifdef CONFIG_ZLIB
 406         pdu.flags = __le64_to_cpu(FIO_PROBE_FLAG_ZLIB);
 407 #else
 408         pdu.flags = 0;
 409 #endif
 410
 411         sname = server_name(client, buf, sizeof(buf));
 412         memset(pdu.server, 0, sizeof(pdu.server));
 413         strncpy((char *) pdu.server, sname, sizeof(pdu.server) - 1);
 414
 415         fio_net_send_cmd(client->fd, FIO_NET_CMD_PROBE, &pdu, sizeof(pdu), &tag, &client->cmd_list);
 416 }
 417
 418 static int fio_client_connect_ip(struct fio_client *client)
 419 {
 420         struct sockaddr *addr;
 421         socklen_t socklen;
 422         int fd, domain;
 423
 424         if (client->ipv6) {
 425                 client->addr6.sin6_family = AF_INET6;
 426                 client->addr6.sin6_port = htons(client->port);
 427                 domain = AF_INET6;
 428                 addr = (struct sockaddr *) &client->addr6;
 429                 socklen = sizeof(client->addr6);
 430         } else {
 431                 client->addr.sin_family = AF_INET;
 432                 client->addr.sin_port = htons(client->port);
 433                 domain = AF_INET;
 434                 addr = (struct sockaddr *) &client->addr;
 435                 socklen = sizeof(client->addr);
 436         }
 437
 438         fd = socket(domain, SOCK_STREAM, 0);
 439         if (fd < 0) {
 440                 int ret = -errno;
 441
 442                 log_err("fio: socket: %s\n", strerror(errno));
 443                 return ret;
 444         }
 445
 446         if (connect(fd, addr, socklen) < 0) {
 447                 int ret = -errno;
 448
 449                 log_err("fio: connect: %s\n", strerror(errno));
 450                 log_err("fio: failed to connect to %s:%u\n", client->hostname,
 451                                                                 client->port);
 452                 close(fd);
 453                 return ret;
 454         }
 455
 456         return fd;
 457 }
 458
 459 static int fio_client_connect_sock(struct fio_client *client)
 460 {
 461         struct sockaddr_un *addr = &client->addr_un;
 462         socklen_t len;
 463         int fd;
 464
 465         memset(addr, 0, sizeof(*addr));
 466         addr->sun_family = AF_UNIX;
 467         strncpy(addr->sun_path, client->hostname, sizeof(addr->sun_path) - 1);
 468
 469         fd = socket(AF_UNIX, SOCK_STREAM, 0);
 470         if (fd < 0) {
 471                 int ret = -errno;
 472
 473                 log_err("fio: socket: %s\n", strerror(errno));
 474                 return ret;
 475         }
 476
 477         len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
 478         if (connect(fd, (struct sockaddr *) addr, len) < 0) {
 479                 int ret = -errno;
 480
 481                 log_err("fio: connect; %s\n", strerror(errno));
 482                 close(fd);
 483                 return ret;
 484         }
 485
 486         return fd;
 487 }
 488
 489 int fio_client_connect(struct fio_client *client)
 490 {
 491         int fd;
 492
 493         dprint(FD_NET, "client: connect to host %s\n", client->hostname);
 494
 495         if (client->is_sock)
 496                 fd = fio_client_connect_sock(client);
 497         else
 498                 fd = fio_client_connect_ip(client);
 499
 500         dprint(FD_NET, "client: %s connected %d\n", client->hostname, fd);
 501
 502         if (fd < 0)
 503                 return fd;
 504
 505         client->fd = fd;
 506         fio_client_add_hash(client);
 507         client->state = Client_connected;
 508
 509         probe_client(client);
 510         return 0;
 511 }
 512
 513 int fio_client_terminate(struct fio_client *client)
 514 {
 515         return fio_net_send_quit(client->fd);
 516 }
 517
 518 void fio_clients_terminate(void)
 519 {
 520         struct flist_head *entry;
 521         struct fio_client *client;
 522
 523         dprint(FD_NET, "client: terminate clients\n");
 524
 525         flist_for_each(entry, &client_list) {
 526                 client = flist_entry(entry, struct fio_client, list);
 527                 fio_client_terminate(client);
 528         }
 529 }
 530
 531 static void sig_int(int sig)
 532 {
 533         dprint(FD_NET, "client: got signal %d\n", sig);
 534         fio_clients_terminate();
 535 }
 536
 537 static void sig_show_status(int sig)
 538 {
 539         show_running_run_stats();
 540 }
 541
 542 static void client_signal_handler(void)
 543 {
 544         struct sigaction act;
 545
 546         memset(&act, 0, sizeof(act));
 547         act.sa_handler = sig_int;
 548         act.sa_flags = SA_RESTART;
 549         sigaction(SIGINT, &act, NULL);
 550
 551         memset(&act, 0, sizeof(act));
 552         act.sa_handler = sig_int;
 553         act.sa_flags = SA_RESTART;
 554         sigaction(SIGTERM, &act, NULL);
 555
 556 /* Windows uses SIGBREAK as a quit signal from other applications */
 557 #ifdef WIN32
 558         memset(&act, 0, sizeof(act));
 559         act.sa_handler = sig_int;
 560         act.sa_flags = SA_RESTART;
 561         sigaction(SIGBREAK, &act, NULL);
 562 #endif
 563
 564         memset(&act, 0, sizeof(act));
 565         act.sa_handler = sig_show_status;
 566         act.sa_flags = SA_RESTART;
 567         sigaction(SIGUSR1, &act, NULL);
 568 }
 569
 570 static int send_client_cmd_line(struct fio_client *client)
 571 {
 572         struct cmd_single_line_pdu *cslp;
 573         struct cmd_line_pdu *clp;
 574         unsigned long offset;
 575         unsigned int *lens;
 576         void *pdu;
 577         size_t mem;
 578         int i, ret;
 579
 580         dprint(FD_NET, "client: send cmdline %d\n", client->argc);
 581
 582         lens = malloc(client->argc * sizeof(unsigned int));
 583
 584         /*
 585          * Find out how much mem we need
 586          */
 587         for (i = 0, mem = 0; i < client->argc; i++) {
 588                 lens[i] = strlen(client->argv[i]) + 1;
 589                 mem += lens[i];
 590         }
 591
 592         /*
 593          * We need one cmd_line_pdu, and argc number of cmd_single_line_pdu
 594          */
 595         mem += sizeof(*clp) + (client->argc * sizeof(*cslp));
 596
 597         pdu = malloc(mem);
 598         clp = pdu;
 599         offset = sizeof(*clp);
 600
 601         for (i = 0; i < client->argc; i++) {
 602                 uint16_t arg_len = lens[i];
 603
 604                 cslp = pdu + offset;
 605                 strcpy((char *) cslp->text, client->argv[i]);
 606                 cslp->len = cpu_to_le16(arg_len);
 607                 offset += sizeof(*cslp) + arg_len;
 608         }
 609
 610         free(lens);
 611         clp->lines = cpu_to_le16(client->argc);
 612         clp->client_type = __cpu_to_le16(client->type);
 613         ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, mem, NULL, NULL);
 614         free(pdu);
 615         return ret;
 616 }
 617
 618 int fio_clients_connect(void)
 619 {
 620         struct fio_client *client;
 621         struct flist_head *entry, *tmp;
 622         int ret;
 623
 624 #ifdef WIN32
 625         WSADATA wsd;
 626         WSAStartup(MAKEWORD(2, 2), &wsd);
 627 #endif
 628
 629         dprint(FD_NET, "client: connect all\n");
 630
 631         client_signal_handler();
 632
 633         flist_for_each_safe(entry, tmp, &client_list) {
 634                 client = flist_entry(entry, struct fio_client, list);
 635
 636                 ret = fio_client_connect(client);
 637                 if (ret) {
 638                         remove_client(client);
 639                         continue;
 640                 }
 641
 642                 if (client->argc > 1)
 643                         send_client_cmd_line(client);
 644         }
 645
 646         return !nr_clients;
 647 }
 648
 649 int fio_start_client(struct fio_client *client)
 650 {
 651         dprint(FD_NET, "client: start %s\n", client->hostname);
 652         return fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_RUN, 0, NULL);
 653 }
 654
 655 int fio_start_all_clients(void)
 656 {
 657         struct fio_client *client;
 658         struct flist_head *entry, *tmp;
 659         int ret;
 660
 661         dprint(FD_NET, "client: start all\n");
 662
 663         fio_client_json_init();
 664
 665         flist_for_each_safe(entry, tmp, &client_list) {
 666                 client = flist_entry(entry, struct fio_client, list);
 667
 668                 ret = fio_start_client(client);
 669                 if (ret) {
 670                         remove_client(client);
 671                         continue;
 672                 }
 673         }
 674
 675         return flist_empty(&client_list);
 676 }
 677
 678 static int __fio_client_send_remote_ini(struct fio_client *client,
 679                                         const char *filename)
 680 {
 681         struct cmd_load_file_pdu *pdu;
 682         size_t p_size;
 683         int ret;
 684
 685         dprint(FD_NET, "send remote ini %s to %s\n", filename, client->hostname);
 686
 687         p_size = sizeof(*pdu) + strlen(filename) + 1;
 688         pdu = malloc(p_size);
 689         memset(pdu, 0, p_size);
 690         pdu->name_len = strlen(filename);
 691         strcpy((char *) pdu->file, filename);
 692         pdu->client_type = cpu_to_le16((uint16_t) client->type);
 693
 694         client->sent_job = 1;
 695         ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_LOAD_FILE, pdu, p_size,NULL, NULL);
 696         free(pdu);
 697         return ret;
 698 }
 699
 700 /*
 701  * Send file contents to server backend. We could use sendfile(), but to remain
 702  * more portable lets just read/write the darn thing.
 703  */
 704 static int __fio_client_send_local_ini(struct fio_client *client,
 705                                        const char *filename)
 706 {
 707         struct cmd_job_pdu *pdu;
 708         size_t p_size;
 709         struct stat sb;
 710         char *p;
 711         void *buf;
 712         off_t len;
 713         int fd, ret;
 714
 715         dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
 716
 717         fd = open(filename, O_RDONLY);
 718         if (fd < 0) {
 719                 ret = -errno;
 720                 log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
 721                 return ret;
 722         }
 723
 724         if (fstat(fd, &sb) < 0) {
 725                 ret = -errno;
 726                 log_err("fio: job file stat: %s\n", strerror(errno));
 727                 close(fd);
 728                 return ret;
 729         }
 730
 731         p_size = sb.st_size + sizeof(*pdu);
 732         pdu = malloc(p_size);
 733         buf = pdu->buf;
 734
 735         len = sb.st_size;
 736         p = buf;
 737         if (read_data(fd, p, len)) {
 738                 log_err("fio: failed reading job file %s\n", filename);
 739                 close(fd);
 740                 free(pdu);
 741                 return 1;
 742         }
 743
 744         pdu->buf_len = __cpu_to_le32(sb.st_size);
 745         pdu->client_type = cpu_to_le32(client->type);
 746
 747         client->sent_job = 1;
 748         ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, pdu, p_size, NULL, NULL);
 749         free(pdu);
 750         close(fd);
 751         return ret;
 752 }
 753
 754 int fio_client_send_ini(struct fio_client *client, const char *filename,
 755                         int remote)
 756 {
 757         int ret;
 758
 759         if (!remote)
 760                 ret = __fio_client_send_local_ini(client, filename);
 761         else
 762                 ret = __fio_client_send_remote_ini(client, filename);
 763
 764         if (!ret)
 765                 client->sent_job = 1;
 766
 767         return ret;
 768 }
 769
 770 static int fio_client_send_cf(struct fio_client *client,
 771                               struct client_file *cf)
 772 {
 773         return fio_client_send_ini(client, cf->file, cf->remote);
 774 }
 775
 776 int fio_clients_send_ini(const char *filename)
 777 {
 778         struct fio_client *client;
 779         struct flist_head *entry, *tmp;
 780
 781         flist_for_each_safe(entry, tmp, &client_list) {
 782                 client = flist_entry(entry, struct fio_client, list);
 783
 784                 if (client->nr_files) {
 785                         int i;
 786
 787                         for (i = 0; i < client->nr_files; i++) {
 788                                 struct client_file *cf;
 789
 790                                 cf = &client->files[i];
 791
 792                                 if (fio_client_send_cf(client, cf)) {
 793                                         remove_client(client);
 794                                         break;
 795                                 }
 796                         }
 797                 }
 798                 if (client->sent_job)
 799                         continue;
 800                 if (!filename || fio_client_send_ini(client, filename, 0))
 801                         remove_client(client);
 802         }
 803
 804         return !nr_clients;
 805 }
 806
 807 int fio_client_update_options(struct fio_client *client,
 808                               struct thread_options *o, uint64_t *tag)
 809 {
 810         struct cmd_add_job_pdu pdu;
 811
 812         pdu.thread_number = cpu_to_le32(client->thread_number);
 813         pdu.groupid = cpu_to_le32(client->groupid);
 814         convert_thread_options_to_net(&pdu.top, o);
 815
 816         return fio_net_send_cmd(client->fd, FIO_NET_CMD_UPDATE_JOB, &pdu, sizeof(pdu), tag, &client->cmd_list);
 817 }
 818
 819 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
 820 {
 821         dst->max_val    = le64_to_cpu(src->max_val);
 822         dst->min_val    = le64_to_cpu(src->min_val);
 823         dst->samples    = le64_to_cpu(src->samples);
 824
 825         /*
 826          * Floats arrive as IEEE 754 encoded uint64_t, convert back to double
 827          */
 828         dst->mean.u.f   = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
 829         dst->S.u.f      = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
 830 }
 831
 832 static void convert_ts(struct thread_stat *dst, struct thread_stat *src)
 833 {
 834         int i, j;
 835
 836         dst->error              = le32_to_cpu(src->error);
 837         dst->thread_number      = le32_to_cpu(src->thread_number);
 838         dst->groupid            = le32_to_cpu(src->groupid);
 839         dst->pid                = le32_to_cpu(src->pid);
 840         dst->members            = le32_to_cpu(src->members);
 841         dst->unified_rw_rep     = le32_to_cpu(src->unified_rw_rep);
 842
 843         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
 844                 convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
 845                 convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
 846                 convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
 847                 convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
 848         }
 849
 850         dst->usr_time           = le64_to_cpu(src->usr_time);
 851         dst->sys_time           = le64_to_cpu(src->sys_time);
 852         dst->ctx                = le64_to_cpu(src->ctx);
 853         dst->minf               = le64_to_cpu(src->minf);
 854         dst->majf               = le64_to_cpu(src->majf);
 855         dst->clat_percentiles   = le64_to_cpu(src->clat_percentiles);
 856         dst->percentile_precision = le64_to_cpu(src->percentile_precision);
 857
 858         for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
 859                 fio_fp64_t *fps = &src->percentile_list[i];
 860                 fio_fp64_t *fpd = &dst->percentile_list[i];
 861
 862                 fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
 863         }
 864
 865         for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
 866                 dst->io_u_map[i]        = le32_to_cpu(src->io_u_map[i]);
 867                 dst->io_u_submit[i]     = le32_to_cpu(src->io_u_submit[i]);
 868                 dst->io_u_complete[i]   = le32_to_cpu(src->io_u_complete[i]);
 869         }
 870
 871         for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
 872                 dst->io_u_lat_u[i]      = le32_to_cpu(src->io_u_lat_u[i]);
 873                 dst->io_u_lat_m[i]      = le32_to_cpu(src->io_u_lat_m[i]);
 874         }
 875
 876         for (i = 0; i < DDIR_RWDIR_CNT; i++)
 877                 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
 878                         dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
 879
 880         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
 881                 dst->total_io_u[i]      = le64_to_cpu(src->total_io_u[i]);
 882                 dst->short_io_u[i]      = le64_to_cpu(src->short_io_u[i]);
 883                 dst->drop_io_u[i]       = le64_to_cpu(src->drop_io_u[i]);
 884         }
 885
 886         dst->total_submit       = le64_to_cpu(src->total_submit);
 887         dst->total_complete     = le64_to_cpu(src->total_complete);
 888
 889         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
 890                 dst->io_bytes[i]        = le64_to_cpu(src->io_bytes[i]);
 891                 dst->runtime[i]         = le64_to_cpu(src->runtime[i]);
 892         }
 893
 894         dst->total_run_time     = le64_to_cpu(src->total_run_time);
 895         dst->continue_on_error  = le16_to_cpu(src->continue_on_error);
 896         dst->total_err_count    = le64_to_cpu(src->total_err_count);
 897         dst->first_error        = le32_to_cpu(src->first_error);
 898         dst->kb_base            = le32_to_cpu(src->kb_base);
 899         dst->unit_base          = le32_to_cpu(src->unit_base);
 900
 901         dst->latency_depth      = le32_to_cpu(src->latency_depth);
 902         dst->latency_target     = le64_to_cpu(src->latency_target);
 903         dst->latency_window     = le64_to_cpu(src->latency_window);
 904         dst->latency_percentile.u.f = fio_uint64_to_double(le64_to_cpu(src->latency_percentile.u.i));
 905
 906         dst->nr_block_infos     = le64_to_cpu(src->nr_block_infos);
 907         for (i = 0; i < dst->nr_block_infos; i++)
 908                 dst->block_infos[i] = le32_to_cpu(src->block_infos[i]);
 909 }
 910
 911 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
 912 {
 913         int i;
 914
 915         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
 916                 dst->max_run[i]         = le64_to_cpu(src->max_run[i]);
 917                 dst->min_run[i]         = le64_to_cpu(src->min_run[i]);
 918                 dst->max_bw[i]          = le64_to_cpu(src->max_bw[i]);
 919                 dst->min_bw[i]          = le64_to_cpu(src->min_bw[i]);
 920                 dst->io_kb[i]           = le64_to_cpu(src->io_kb[i]);
 921                 dst->agg[i]             = le64_to_cpu(src->agg[i]);
 922         }
 923
 924         dst->kb_base    = le32_to_cpu(src->kb_base);
 925         dst->unit_base  = le32_to_cpu(src->unit_base);
 926         dst->groupid    = le32_to_cpu(src->groupid);
 927         dst->unified_rw_rep     = le32_to_cpu(src->unified_rw_rep);
 928 }
 929
 930 static void json_object_add_client_info(struct json_object *obj,
 931                                         struct fio_client *client)
 932 {
 933         const char *hostname = client->hostname ? client->hostname : "";
 934
 935         json_object_add_value_string(obj, "hostname", hostname);
 936         json_object_add_value_int(obj, "port", client->port);
 937 }
 938
 939 static void handle_ts(struct fio_client *client, struct fio_net_cmd *cmd)
 940 {
 941         struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;
 942         struct json_object *tsobj;
 943
 944         tsobj = show_thread_status(&p->ts, &p->rs);
 945         client->did_stat = 1;
 946         if (tsobj) {
 947                 json_object_add_client_info(tsobj, client);
 948                 json_array_add_value_object(clients_array, tsobj);
 949         }
 950
 951         if (sum_stat_clients <= 1)
 952                 return;
 953
 954         sum_thread_stats(&client_ts, &p->ts, sum_stat_nr);
 955         sum_group_stats(&client_gs, &p->rs);
 956
 957         client_ts.members++;
 958         client_ts.thread_number = p->ts.thread_number;
 959         client_ts.groupid = p->ts.groupid;
 960         client_ts.unified_rw_rep = p->ts.unified_rw_rep;
 961
 962         if (++sum_stat_nr == sum_stat_clients) {
 963                 strcpy(client_ts.name, "All clients");
 964                 tsobj = show_thread_status(&client_ts, &client_gs);
 965                 if (tsobj) {
 966                         json_object_add_client_info(tsobj, client);
 967                         json_array_add_value_object(clients_array, tsobj);
 968                 }
 969         }
 970 }
 971
 972 static void handle_gs(struct fio_client *client, struct fio_net_cmd *cmd)
 973 {
 974         struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;
 975
 976         show_group_stats(gs);
 977 }
 978
 979 static void handle_text(struct fio_client *client, struct fio_net_cmd *cmd)
 980 {
 981         struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmd->payload;
 982         const char *buf = (const char *) pdu->buf;
 983         const char *name;
 984         int fio_unused ret;
 985
 986         name = client->name ? client->name : client->hostname;
 987
 988         if (!client->skip_newline)
 989                 fprintf(f_out, "<%s> ", name);
 990         ret = fwrite(buf, pdu->buf_len, 1, f_out);
 991         fflush(f_out);
 992         client->skip_newline = strchr(buf, '\n') == NULL;
 993 }
 994
 995 static void convert_agg(struct disk_util_agg *agg)
 996 {
 997         int i;
 998
 999         for (i = 0; i < 2; i++) {
1000                 agg->ios[i]     = le64_to_cpu(agg->ios[i]);
1001                 agg->merges[i]  = le64_to_cpu(agg->merges[i]);
1002                 agg->sectors[i] = le64_to_cpu(agg->sectors[i]);
1003                 agg->ticks[i]   = le64_to_cpu(agg->ticks[i]);
1004         }
1005
1006         agg->io_ticks           = le64_to_cpu(agg->io_ticks);
1007         agg->time_in_queue      = le64_to_cpu(agg->time_in_queue);
1008         agg->slavecount         = le32_to_cpu(agg->slavecount);
1009         agg->max_util.u.f       = fio_uint64_to_double(le64_to_cpu(agg->max_util.u.i));
1010 }
1011
1012 static void convert_dus(struct disk_util_stat *dus)
1013 {
1014         int i;
1015
1016         for (i = 0; i < 2; i++) {
1017                 dus->s.ios[i]           = le64_to_cpu(dus->s.ios[i]);
1018                 dus->s.merges[i]        = le64_to_cpu(dus->s.merges[i]);
1019                 dus->s.sectors[i]       = le64_to_cpu(dus->s.sectors[i]);
1020                 dus->s.ticks[i]         = le64_to_cpu(dus->s.ticks[i]);
1021         }
1022
1023         dus->s.io_ticks         = le64_to_cpu(dus->s.io_ticks);
1024         dus->s.time_in_queue    = le64_to_cpu(dus->s.time_in_queue);
1025         dus->s.msec             = le64_to_cpu(dus->s.msec);
1026 }
1027
1028 static void handle_du(struct fio_client *client, struct fio_net_cmd *cmd)
1029 {
1030         struct cmd_du_pdu *du = (struct cmd_du_pdu *) cmd->payload;
1031
1032         if (!client->disk_stats_shown) {
1033                 client->disk_stats_shown = 1;
1034                 log_info("\nDisk stats (read/write):\n");
1035         }
1036
1037         if (output_format == FIO_OUTPUT_JSON) {
1038                 struct json_object *duobj;
1039                 json_array_add_disk_util(&du->dus, &du->agg, du_array);
1040                 duobj = json_array_last_value_object(du_array);
1041                 json_object_add_client_info(duobj, client);
1042         } else
1043                 print_disk_util(&du->dus, &du->agg, output_format == FIO_OUTPUT_TERSE);
1044 }
1045
1046 static void convert_jobs_eta(struct jobs_eta *je)
1047 {
1048         int i;
1049
1050         je->nr_running          = le32_to_cpu(je->nr_running);
1051         je->nr_ramp             = le32_to_cpu(je->nr_ramp);
1052         je->nr_pending          = le32_to_cpu(je->nr_pending);
1053         je->nr_setting_up       = le32_to_cpu(je->nr_setting_up);
1054         je->files_open          = le32_to_cpu(je->files_open);
1055
1056         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1057                 je->m_rate[i]   = le32_to_cpu(je->m_rate[i]);
1058                 je->t_rate[i]   = le32_to_cpu(je->t_rate[i]);
1059                 je->m_iops[i]   = le32_to_cpu(je->m_iops[i]);
1060                 je->t_iops[i]   = le32_to_cpu(je->t_iops[i]);
1061                 je->rate[i]     = le32_to_cpu(je->rate[i]);
1062                 je->iops[i]     = le32_to_cpu(je->iops[i]);
1063         }
1064
1065         je->elapsed_sec         = le64_to_cpu(je->elapsed_sec);
1066         je->eta_sec             = le64_to_cpu(je->eta_sec);
1067         je->nr_threads          = le32_to_cpu(je->nr_threads);
1068         je->is_pow2             = le32_to_cpu(je->is_pow2);
1069         je->unit_base           = le32_to_cpu(je->unit_base);
1070 }
1071
1072 void fio_client_sum_jobs_eta(struct jobs_eta *dst, struct jobs_eta *je)
1073 {
1074         int i;
1075
1076         dst->nr_running         += je->nr_running;
1077         dst->nr_ramp            += je->nr_ramp;
1078         dst->nr_pending         += je->nr_pending;
1079         dst->nr_setting_up      += je->nr_setting_up;
1080         dst->files_open         += je->files_open;
1081
1082         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
1083                 dst->m_rate[i]  += je->m_rate[i];
1084                 dst->t_rate[i]  += je->t_rate[i];
1085                 dst->m_iops[i]  += je->m_iops[i];
1086                 dst->t_iops[i]  += je->t_iops[i];
1087                 dst->rate[i]    += je->rate[i];
1088                 dst->iops[i]    += je->iops[i];
1089         }
1090
1091         dst->elapsed_sec        += je->elapsed_sec;
1092
1093         if (je->eta_sec > dst->eta_sec)
1094                 dst->eta_sec = je->eta_sec;
1095
1096         dst->nr_threads         += je->nr_threads;
1097
1098         /*
1099          * This wont be correct for multiple strings, but at least it
1100          * works for the basic cases.
1101          */
1102         strcpy((char *) dst->run_str, (char *) je->run_str);
1103 }
1104
1105 static void remove_reply_cmd(struct fio_client *client, struct fio_net_cmd *cmd)
1106 {
1107         struct fio_net_cmd_reply *reply = NULL;
1108         struct flist_head *entry;
1109
1110         flist_for_each(entry, &client->cmd_list) {
1111                 reply = flist_entry(entry, struct fio_net_cmd_reply, list);
1112
1113                 if (cmd->tag == (uintptr_t) reply)
1114                         break;
1115
1116                 reply = NULL;
1117         }
1118
1119         if (!reply) {
1120                 log_err("fio: client: unable to find matching tag (%llx)\n", (unsigned long long) cmd->tag);
1121                 return;
1122         }
1123
1124         flist_del(&reply->list);
1125         cmd->tag = reply->saved_tag;
1126         free(reply);
1127 }
1128
1129 int fio_client_wait_for_reply(struct fio_client *client, uint64_t tag)
1130 {
1131         do {
1132                 struct fio_net_cmd_reply *reply = NULL;
1133                 struct flist_head *entry;
1134
1135                 flist_for_each(entry, &client->cmd_list) {
1136                         reply = flist_entry(entry, struct fio_net_cmd_reply, list);
1137
1138                         if (tag == (uintptr_t) reply)
1139                                 break;
1140
1141                         reply = NULL;
1142                 }
1143
1144                 if (!reply)
1145                         break;
1146
1147                 usleep(1000);
1148         } while (1);
1149
1150         return 0;
1151 }
1152
1153 static void handle_eta(struct fio_client *client, struct fio_net_cmd *cmd)
1154 {
1155         struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
1156         struct client_eta *eta = (struct client_eta *) (uintptr_t) cmd->tag;
1157
1158         dprint(FD_NET, "client: got eta tag %p, %d\n", eta, eta->pending);
1159
1160         assert(client->eta_in_flight == eta);
1161
1162         client->eta_in_flight = NULL;
1163         flist_del_init(&client->eta_list);
1164
1165         if (client->ops->jobs_eta)
1166                 client->ops->jobs_eta(client, je);
1167
1168         fio_client_sum_jobs_eta(&eta->eta, je);
1169         fio_client_dec_jobs_eta(eta, client->ops->eta);
1170 }
1171
1172 static void handle_probe(struct fio_client *client, struct fio_net_cmd *cmd)
1173 {
1174         struct cmd_probe_reply_pdu *probe = (struct cmd_probe_reply_pdu *) cmd->payload;
1175         const char *os, *arch;
1176         char bit[16];
1177
1178         os = fio_get_os_string(probe->os);
1179         if (!os)
1180                 os = "unknown";
1181
1182         arch = fio_get_arch_string(probe->arch);
1183         if (!arch)
1184                 os = "unknown";
1185
1186         sprintf(bit, "%d-bit", probe->bpp * 8);
1187         probe->flags = le64_to_cpu(probe->flags);
1188
1189         log_info("hostname=%s, be=%u, %s, os=%s, arch=%s, fio=%s, flags=%lx\n",
1190                 probe->hostname, probe->bigendian, bit, os, arch,
1191                 probe->fio_version, (unsigned long) probe->flags);
1192
1193         if (!client->name)
1194                 client->name = strdup((char *) probe->hostname);
1195 }
1196
1197 static void handle_start(struct fio_client *client, struct fio_net_cmd *cmd)
1198 {
1199         struct cmd_start_pdu *pdu = (struct cmd_start_pdu *) cmd->payload;
1200
1201         client->state = Client_started;
1202         client->jobs = le32_to_cpu(pdu->jobs);
1203         client->nr_stat = le32_to_cpu(pdu->stat_outputs);
1204
1205         sum_stat_clients += client->nr_stat;
1206 }
1207
1208 static void handle_stop(struct fio_client *client, struct fio_net_cmd *cmd)
1209 {
1210         if (client->error)
1211                 log_info("client <%s>: exited with error %d\n", client->hostname, client->error);
1212 }
1213
1214 static void convert_stop(struct fio_net_cmd *cmd)
1215 {
1216         struct cmd_end_pdu *pdu = (struct cmd_end_pdu *) cmd->payload;
1217
1218         pdu->error = le32_to_cpu(pdu->error);
1219 }
1220
1221 static void convert_text(struct fio_net_cmd *cmd)
1222 {
1223         struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmd->payload;
1224
1225         pdu->level      = le32_to_cpu(pdu->level);
1226         pdu->buf_len    = le32_to_cpu(pdu->buf_len);
1227         pdu->log_sec    = le64_to_cpu(pdu->log_sec);
1228         pdu->log_usec   = le64_to_cpu(pdu->log_usec);
1229 }
1230
1231 static struct cmd_iolog_pdu *convert_iolog_gz(struct fio_net_cmd *cmd,
1232                                               struct cmd_iolog_pdu *pdu)
1233 {
1234 #ifdef CONFIG_ZLIB
1235         struct cmd_iolog_pdu *ret;
1236         z_stream stream;
1237         uint32_t nr_samples;
1238         size_t total;
1239         void *p;
1240
1241         stream.zalloc = Z_NULL;
1242         stream.zfree = Z_NULL;
1243         stream.opaque = Z_NULL;
1244         stream.avail_in = 0;
1245         stream.next_in = Z_NULL;
1246
1247         if (inflateInit(&stream) != Z_OK)
1248                 return NULL;
1249
1250         /*
1251          * Get header first, it's not compressed
1252          */
1253         nr_samples = le64_to_cpu(pdu->nr_samples);
1254
1255         total = nr_samples * __log_entry_sz(le32_to_cpu(pdu->log_offset));
1256         ret = malloc(total + sizeof(*pdu));
1257         ret->nr_samples = nr_samples;
1258
1259         memcpy(ret, pdu, sizeof(*pdu));
1260
1261         p = (void *) ret + sizeof(*pdu);
1262
1263         stream.avail_in = cmd->pdu_len - sizeof(*pdu);
1264         stream.next_in = (void *) pdu + sizeof(*pdu);
1265         while (stream.avail_in) {
1266                 unsigned int this_chunk = 65536;
1267                 unsigned int this_len;
1268                 int err;
1269
1270                 if (this_chunk > total)
1271                         this_chunk = total;
1272
1273                 stream.avail_out = this_chunk;
1274                 stream.next_out = p;
1275                 err = inflate(&stream, Z_NO_FLUSH);
1276                 /* may be Z_OK, or Z_STREAM_END */
1277                 if (err < 0) {
1278                         log_err("fio: inflate error %d\n", err);
1279                         free(ret);
1280                         ret = NULL;
1281                         goto err;
1282                 }
1283
1284                 this_len = this_chunk - stream.avail_out;
1285                 p += this_len;
1286                 total -= this_len;
1287         }
1288
1289 err:
1290         inflateEnd(&stream);
1291         return ret;
1292 #else
1293         return NULL;
1294 #endif
1295 }
1296
1297 /*
1298  * This has been compressed on the server side, since it can be big.
1299  * Uncompress here.
1300  */
1301 static struct cmd_iolog_pdu *convert_iolog(struct fio_net_cmd *cmd)
1302 {
1303         struct cmd_iolog_pdu *pdu = (struct cmd_iolog_pdu *) cmd->payload;
1304         struct cmd_iolog_pdu *ret;
1305         uint64_t i;
1306         void *samples;
1307
1308         /*
1309          * Convert if compressed and we support it. If it's not
1310          * compressed, we need not do anything.
1311          */
1312         if (le32_to_cpu(pdu->compressed)) {
1313 #ifndef CONFIG_ZLIB
1314                 log_err("fio: server sent compressed data by mistake\n");
1315                 return NULL;
1316 #endif
1317                 ret = convert_iolog_gz(cmd, pdu);
1318                 if (!ret) {
1319                         log_err("fio: failed decompressing log\n");
1320                         return NULL;
1321                 }
1322         } else
1323                 ret = pdu;
1324
1325         ret->nr_samples         = le64_to_cpu(ret->nr_samples);
1326         ret->thread_number      = le32_to_cpu(ret->thread_number);
1327         ret->log_type           = le32_to_cpu(ret->log_type);
1328         ret->compressed         = le32_to_cpu(ret->compressed);
1329         ret->log_offset         = le32_to_cpu(ret->log_offset);
1330
1331         samples = &ret->samples[0];
1332         for (i = 0; i < ret->nr_samples; i++) {
1333                 struct io_sample *s;
1334
1335                 s = __get_sample(samples, ret->log_offset, i);
1336                 s->time         = le64_to_cpu(s->time);
1337                 s->val          = le64_to_cpu(s->val);
1338                 s->__ddir       = le32_to_cpu(s->__ddir);
1339                 s->bs           = le32_to_cpu(s->bs);
1340
1341                 if (ret->log_offset) {
1342                         struct io_sample_offset *so = (void *) s;
1343
1344                         so->offset = le64_to_cpu(so->offset);
1345                 }
1346         }
1347
1348         return ret;
1349 }
1350
1351 static void sendfile_reply(int fd, struct cmd_sendfile_reply *rep,
1352                            size_t size, uint64_t tag)
1353 {
1354         rep->error = cpu_to_le32(rep->error);
1355         fio_net_send_cmd(fd, FIO_NET_CMD_SENDFILE, rep, size, &tag, NULL);
1356 }
1357
1358 static int send_file(struct fio_client *client, struct cmd_sendfile *pdu,
1359                      uint64_t tag)
1360 {
1361         struct cmd_sendfile_reply *rep;
1362         struct stat sb;
1363         size_t size;
1364         int fd;
1365
1366         size = sizeof(*rep);
1367         rep = malloc(size);
1368
1369         if (stat((char *)pdu->path, &sb) < 0) {
1370 fail:
1371                 rep->error = errno;
1372                 sendfile_reply(client->fd, rep, size, tag);
1373                 free(rep);
1374                 return 1;
1375         }
1376
1377         size += sb.st_size;
1378         rep = realloc(rep, size);
1379         rep->size = cpu_to_le32((uint32_t) sb.st_size);
1380
1381         fd = open((char *)pdu->path, O_RDONLY);
1382         if (fd == -1 )
1383                 goto fail;
1384
1385         rep->error = read_data(fd, &rep->data, sb.st_size);
1386         sendfile_reply(client->fd, rep, size, tag);
1387         free(rep);
1388         close(fd);
1389         return 0;
1390 }
1391
1392 int fio_handle_client(struct fio_client *client)
1393 {
1394         struct client_ops *ops = client->ops;
1395         struct fio_net_cmd *cmd;
1396
1397         dprint(FD_NET, "client: handle %s\n", client->hostname);
1398
1399         cmd = fio_net_recv_cmd(client->fd);
1400         if (!cmd)
1401                 return 0;
1402
1403         dprint(FD_NET, "client: got cmd op %s from %s (pdu=%u)\n",
1404                 fio_server_op(cmd->opcode), client->hostname, cmd->pdu_len);
1405
1406         switch (cmd->opcode) {
1407         case FIO_NET_CMD_QUIT:
1408                 if (ops->quit)
1409                         ops->quit(client, cmd);
1410                 remove_client(client);
1411                 break;
1412         case FIO_NET_CMD_TEXT:
1413                 convert_text(cmd);
1414                 ops->text(client, cmd);
1415                 break;
1416         case FIO_NET_CMD_DU: {
1417                 struct cmd_du_pdu *du = (struct cmd_du_pdu *) cmd->payload;
1418
1419                 convert_dus(&du->dus);
1420                 convert_agg(&du->agg);
1421
1422                 ops->disk_util(client, cmd);
1423                 break;
1424                 }
1425         case FIO_NET_CMD_TS: {
1426                 struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;
1427
1428                 convert_ts(&p->ts, &p->ts);
1429                 convert_gs(&p->rs, &p->rs);
1430
1431                 ops->thread_status(client, cmd);
1432                 break;
1433                 }
1434         case FIO_NET_CMD_GS: {
1435                 struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;
1436
1437                 convert_gs(gs, gs);
1438
1439                 ops->group_stats(client, cmd);
1440                 break;
1441                 }
1442         case FIO_NET_CMD_ETA: {
1443                 struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
1444
1445                 remove_reply_cmd(client, cmd);
1446                 convert_jobs_eta(je);
1447                 handle_eta(client, cmd);
1448                 break;
1449                 }
1450         case FIO_NET_CMD_PROBE:
1451                 remove_reply_cmd(client, cmd);
1452                 ops->probe(client, cmd);
1453                 break;
1454         case FIO_NET_CMD_SERVER_START:
1455                 client->state = Client_running;
1456                 if (ops->job_start)
1457                         ops->job_start(client, cmd);
1458                 break;
1459         case FIO_NET_CMD_START: {
1460                 struct cmd_start_pdu *pdu = (struct cmd_start_pdu *) cmd->payload;
1461
1462                 pdu->jobs = le32_to_cpu(pdu->jobs);
1463                 ops->start(client, cmd);
1464                 break;
1465                 }
1466         case FIO_NET_CMD_STOP: {
1467                 struct cmd_end_pdu *pdu = (struct cmd_end_pdu *) cmd->payload;
1468
1469                 convert_stop(cmd);
1470                 client->state = Client_stopped;
1471                 client->error = le32_to_cpu(pdu->error);
1472                 client->signal = le32_to_cpu(pdu->signal);
1473                 ops->stop(client, cmd);
1474                 break;
1475                 }
1476         case FIO_NET_CMD_ADD_JOB: {
1477                 struct cmd_add_job_pdu *pdu = (struct cmd_add_job_pdu *) cmd->payload;
1478
1479                 client->thread_number = le32_to_cpu(pdu->thread_number);
1480                 client->groupid = le32_to_cpu(pdu->groupid);
1481
1482                 if (ops->add_job)
1483                         ops->add_job(client, cmd);
1484                 break;
1485                 }
1486         case FIO_NET_CMD_IOLOG:
1487                 if (ops->iolog) {
1488                         struct cmd_iolog_pdu *pdu;
1489
1490                         pdu = convert_iolog(cmd);
1491                         ops->iolog(client, pdu);
1492                 }
1493                 break;
1494         case FIO_NET_CMD_UPDATE_JOB:
1495                 ops->update_job(client, cmd);
1496                 remove_reply_cmd(client, cmd);
1497                 break;
1498         case FIO_NET_CMD_VTRIGGER: {
1499                 struct all_io_list *pdu = (struct all_io_list *) cmd->payload;
1500                 char buf[128];
1501                 int off = 0;
1502
1503                 if (aux_path) {
1504                         strcpy(buf, aux_path);
1505                         off = strlen(buf);
1506                 }
1507
1508                 __verify_save_state(pdu, server_name(client, &buf[off], sizeof(buf) - off));
1509                 exec_trigger(trigger_cmd);
1510                 break;
1511                 }
1512         case FIO_NET_CMD_SENDFILE: {
1513                 struct cmd_sendfile *pdu = (struct cmd_sendfile *) cmd->payload;
1514                 send_file(client, pdu, cmd->tag);
1515                 break;
1516                 }
1517         default:
1518                 log_err("fio: unknown client op: %s\n", fio_server_op(cmd->opcode));
1519                 break;
1520         }
1521
1522         free(cmd);
1523         return 1;
1524 }
1525
1526 int fio_clients_send_trigger(const char *cmd)
1527 {
1528         struct flist_head *entry;
1529         struct fio_client *client;
1530         size_t slen;
1531
1532         dprint(FD_NET, "client: send vtrigger: %s\n", cmd);
1533
1534         if (!cmd)
1535                 slen = 0;
1536         else
1537                 slen = strlen(cmd);
1538
1539         flist_for_each(entry, &client_list) {
1540                 struct cmd_vtrigger_pdu *pdu;
1541
1542                 client = flist_entry(entry, struct fio_client, list);
1543
1544                 pdu = malloc(sizeof(*pdu) + slen);
1545                 pdu->len = cpu_to_le16((uint16_t) slen);
1546                 if (slen)
1547                         memcpy(pdu->cmd, cmd, slen);
1548                 fio_net_send_cmd(client->fd, FIO_NET_CMD_VTRIGGER, pdu,
1549                                         sizeof(*pdu) + slen, NULL, NULL);
1550                 free(pdu);
1551         }
1552
1553         return 0;
1554 }
1555
1556 static void request_client_etas(struct client_ops *ops)
1557 {
1558         struct fio_client *client;
1559         struct flist_head *entry;
1560         struct client_eta *eta;
1561         int skipped = 0;
1562
1563         dprint(FD_NET, "client: request eta (%d)\n", nr_clients);
1564
1565         eta = calloc(1, sizeof(*eta) + __THREAD_RUNSTR_SZ(REAL_MAX_JOBS));
1566         eta->pending = nr_clients;
1567
1568         flist_for_each(entry, &client_list) {
1569                 client = flist_entry(entry, struct fio_client, list);
1570
1571                 if (!flist_empty(&client->eta_list)) {
1572                         skipped++;
1573                         continue;
1574                 }
1575                 if (client->state != Client_running)
1576                         continue;
1577
1578                 assert(!client->eta_in_flight);
1579                 flist_add_tail(&client->eta_list, &eta_list);
1580                 client->eta_in_flight = eta;
1581                 fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_SEND_ETA,
1582                                         (uintptr_t) eta, &client->cmd_list);
1583         }
1584
1585         while (skipped--) {
1586                 if (!fio_client_dec_jobs_eta(eta, ops->eta))
1587                         break;
1588         }
1589
1590         dprint(FD_NET, "client: requested eta tag %p\n", eta);
1591 }
1592
1593 static int client_check_cmd_timeout(struct fio_client *client,
1594                                     struct timeval *now)
1595 {
1596         struct fio_net_cmd_reply *reply;
1597         struct flist_head *entry, *tmp;
1598         int ret = 0;
1599
1600         flist_for_each_safe(entry, tmp, &client->cmd_list) {
1601                 reply = flist_entry(entry, struct fio_net_cmd_reply, list);
1602
1603                 if (mtime_since(&reply->tv, now) < FIO_NET_CLIENT_TIMEOUT)
1604                         continue;
1605
1606                 log_err("fio: client %s, timeout on cmd %s\n", client->hostname,
1607                                                 fio_server_op(reply->opcode));
1608                 flist_del(&reply->list);
1609                 free(reply);
1610                 ret = 1;
1611         }
1612
1613         return flist_empty(&client->cmd_list) && ret;
1614 }
1615
1616 static int fio_check_clients_timed_out(void)
1617 {
1618         struct fio_client *client;
1619         struct flist_head *entry, *tmp;
1620         struct timeval tv;
1621         int ret = 0;
1622
1623         fio_gettime(&tv, NULL);
1624
1625         flist_for_each_safe(entry, tmp, &client_list) {
1626                 client = flist_entry(entry, struct fio_client, list);
1627
1628                 if (flist_empty(&client->cmd_list))
1629                         continue;
1630
1631                 if (!client_check_cmd_timeout(client, &tv))
1632                         continue;
1633
1634                 if (client->ops->timed_out)
1635                         client->ops->timed_out(client);
1636                 else
1637                         log_err("fio: client %s timed out\n", client->hostname);
1638
1639                 client->error = ETIMEDOUT;
1640                 remove_client(client);
1641                 ret = 1;
1642         }
1643
1644         return ret;
1645 }
1646
1647 int fio_handle_clients(struct client_ops *ops)
1648 {
1649         struct pollfd *pfds;
1650         int i, ret = 0, retval = 0;
1651
1652         fio_gettime(&eta_tv, NULL);
1653
1654         pfds = malloc(nr_clients * sizeof(struct pollfd));
1655
1656         init_thread_stat(&client_ts);
1657         init_group_run_stat(&client_gs);
1658
1659         while (!exit_backend && nr_clients) {
1660                 struct flist_head *entry, *tmp;
1661                 struct fio_client *client;
1662
1663                 i = 0;
1664                 flist_for_each_safe(entry, tmp, &client_list) {
1665                         client = flist_entry(entry, struct fio_client, list);
1666
1667                         if (!client->sent_job && !client->ops->stay_connected &&
1668                             flist_empty(&client->cmd_list)) {
1669                                 remove_client(client);
1670                                 continue;
1671                         }
1672
1673                         pfds[i].fd = client->fd;
1674                         pfds[i].events = POLLIN;
1675                         i++;
1676                 }
1677
1678                 if (!nr_clients)
1679                         break;
1680
1681                 assert(i == nr_clients);
1682
1683                 do {
1684                         struct timeval tv;
1685                         int timeout;
1686
1687                         fio_gettime(&tv, NULL);
1688                         if (mtime_since(&eta_tv, &tv) >= 900) {
1689                                 request_client_etas(ops);
1690                                 memcpy(&eta_tv, &tv, sizeof(tv));
1691
1692                                 if (fio_check_clients_timed_out())
1693                                         break;
1694                         }
1695
1696                         check_trigger_file();
1697
1698                         timeout = min(100u, ops->eta_msec);
1699
1700                         ret = poll(pfds, nr_clients, timeout);
1701                         if (ret < 0) {
1702                                 if (errno == EINTR)
1703                                         continue;
1704                                 log_err("fio: poll clients: %s\n", strerror(errno));
1705                                 break;
1706                         } else if (!ret)
1707                                 continue;
1708                 } while (ret <= 0);
1709
1710                 for (i = 0; i < nr_clients; i++) {
1711                         if (!(pfds[i].revents & POLLIN))
1712                                 continue;
1713
1714                         client = find_client_by_fd(pfds[i].fd);
1715                         if (!client) {
1716                                 log_err("fio: unknown client fd %ld\n", (long) pfds[i].fd);
1717                                 continue;
1718                         }
1719                         if (!fio_handle_client(client)) {
1720                                 log_info("client: host=%s disconnected\n",
1721                                                 client->hostname);
1722                                 remove_client(client);
1723                                 retval = 1;
1724                         } else if (client->error)
1725                                 retval = 1;
1726                         fio_put_client(client);
1727                 }
1728         }
1729
1730         fio_client_json_fini();
1731
1732         free(pfds);
1733         return retval || error_clients;
1734 }