11 #include <sys/socket.h>
14 #include <netinet/in.h>
15 #include <arpa/inet.h>
22 #include "crc/crc16.h"
23 #include "lib/ieee754.h"
25 int fio_net_port = 8765;
29 static int server_fd = -1;
30 static char *fio_server_arg;
31 static char *bind_sock;
32 static struct sockaddr_in saddr_in;
33 static struct sockaddr_in6 saddr_in6;
34 static int first_cmd_check;
37 static const char *fio_server_ops[FIO_NET_CMD_NR] = {
55 const char *fio_server_op(unsigned int op)
59 if (op < FIO_NET_CMD_NR)
60 return fio_server_ops[op];
62 sprintf(buf, "UNKNOWN/%d", op);
66 int fio_send_data(int sk, const void *p, unsigned int len)
68 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_PDU);
71 int ret = send(sk, p, len, 0);
81 else if (errno == EAGAIN || errno == EINTR)
85 } while (!exit_backend);
93 int fio_recv_data(int sk, void *p, unsigned int len)
96 int ret = recv(sk, p, len, MSG_WAITALL);
106 else if (errno == EAGAIN || errno == EINTR)
110 } while (!exit_backend);
118 static int verify_convert_cmd(struct fio_net_cmd *cmd)
122 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
123 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
125 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
126 if (crc != cmd->cmd_crc16) {
127 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
128 cmd->cmd_crc16, crc);
132 cmd->version = le16_to_cpu(cmd->version);
133 cmd->opcode = le16_to_cpu(cmd->opcode);
134 cmd->flags = le32_to_cpu(cmd->flags);
135 cmd->tag = le64_to_cpu(cmd->tag);
136 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
138 switch (cmd->version) {
142 log_err("fio: bad server cmd version %d\n", cmd->version);
146 if (cmd->pdu_len > FIO_SERVER_MAX_PDU) {
147 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
155 * Read (and defragment, if necessary) incoming commands
157 struct fio_net_cmd *fio_net_recv_cmd(int sk)
159 struct fio_net_cmd cmd, *cmdret = NULL;
160 size_t cmd_size = 0, pdu_offset = 0;
166 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
170 /* We have a command, verify it and swap if need be */
171 ret = verify_convert_cmd(&cmd);
176 /* if this is text, add room for \0 at the end */
177 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
180 cmd_size += cmd.pdu_len;
182 cmdret = realloc(cmdret, cmd_size);
185 memcpy(cmdret, &cmd, sizeof(cmd));
186 else if (cmdret->opcode != cmd.opcode) {
187 log_err("fio: fragment opcode mismatch (%d != %d)\n",
188 cmdret->opcode, cmd.opcode);
196 /* There's payload, get it */
197 pdu = (void *) cmdret->payload + pdu_offset;
198 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
202 /* Verify payload crc */
203 crc = fio_crc16(pdu, cmd.pdu_len);
204 if (crc != cmd.pdu_crc16) {
205 log_err("fio: server bad crc on payload ");
206 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
211 pdu_offset += cmd.pdu_len;
213 cmdret->pdu_len += cmd.pdu_len;
215 } while (cmd.flags & FIO_NET_CMD_F_MORE);
221 /* zero-terminate text input */
222 if (cmdret->pdu_len && (cmdret->opcode == FIO_NET_CMD_TEXT ||
223 cmdret->opcode == FIO_NET_CMD_JOB)) {
224 char *buf = (char *) cmdret->payload;
226 buf[cmdret->pdu_len ] = '\0';
228 /* frag flag is internal */
229 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
235 void fio_net_cmd_crc(struct fio_net_cmd *cmd)
239 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
241 pdu_len = le32_to_cpu(cmd->pdu_len);
243 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(cmd->payload, pdu_len));
246 int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
249 struct fio_net_cmd *cmd = NULL;
250 size_t this_len, cur_len = 0;
255 if (this_len > FIO_SERVER_MAX_PDU)
256 this_len = FIO_SERVER_MAX_PDU;
258 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
262 cur_len = sizeof(*cmd) + this_len;
263 cmd = malloc(cur_len);
266 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
269 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
271 fio_net_cmd_crc(cmd);
273 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
276 } while (!ret && size);
284 static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
286 struct fio_net_cmd cmd;
288 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
289 fio_net_cmd_crc(&cmd);
291 return fio_send_data(sk, &cmd, sizeof(cmd));
295 * If 'list' is non-NULL, then allocate and store the sent command for
296 * later verification.
298 int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
299 struct flist_head *list)
301 struct fio_net_int_cmd *cmd;
305 return fio_net_send_simple_stack_cmd(sk, opcode, tag);
307 cmd = malloc(sizeof(*cmd));
309 fio_init_net_cmd(&cmd->cmd, opcode, NULL, 0, (uintptr_t) cmd);
310 fio_net_cmd_crc(&cmd->cmd);
312 INIT_FLIST_HEAD(&cmd->list);
313 gettimeofday(&cmd->tv, NULL);
314 cmd->saved_tag = tag;
316 ret = fio_send_data(sk, &cmd->cmd, sizeof(cmd->cmd));
322 flist_add_tail(&cmd->list, list);
326 static int fio_server_send_quit_cmd(void)
328 dprint(FD_NET, "server: sending quit\n");
329 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0, NULL);
332 static int handle_job_cmd(struct fio_net_cmd *cmd)
334 char *buf = (char *) cmd->payload;
335 struct cmd_start_pdu spdu;
336 struct cmd_end_pdu epdu;
339 if (parse_jobs_ini(buf, 1, 0)) {
340 fio_server_send_quit_cmd();
344 spdu.jobs = cpu_to_le32(thread_number);
345 spdu.stat_outputs = cpu_to_le32(stat_number);
346 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), 0);
351 fio_net_send_cmd(server_fd, FIO_NET_CMD_STOP, &epdu, sizeof(epdu), 0);
353 fio_server_send_quit_cmd();
358 static int handle_jobline_cmd(struct fio_net_cmd *cmd)
360 void *pdu = cmd->payload;
361 struct cmd_single_line_pdu *cslp;
362 struct cmd_line_pdu *clp;
363 unsigned long offset;
368 clp->lines = le16_to_cpu(clp->lines);
369 argv = malloc(clp->lines * sizeof(char *));
370 offset = sizeof(*clp);
372 dprint(FD_NET, "server: %d command line args\n", clp->lines);
374 for (i = 0; i < clp->lines; i++) {
376 argv[i] = (char *) cslp->text;
378 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
379 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
382 if (parse_cmd_line(clp->lines, argv)) {
383 fio_server_send_quit_cmd();
390 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0, NULL);
393 fio_server_send_quit_cmd();
398 static int handle_probe_cmd(struct fio_net_cmd *cmd)
400 struct cmd_probe_pdu probe;
402 dprint(FD_NET, "server: sending probe reply\n");
404 memset(&probe, 0, sizeof(probe));
405 gethostname((char *) probe.hostname, sizeof(probe.hostname));
406 #ifdef FIO_BIG_ENDIAN
409 strncpy((char *) probe.fio_version, fio_version_string, sizeof(probe.fio_version));
412 probe.arch = FIO_ARCH;
414 probe.bpp = sizeof(void *);
416 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), cmd->tag);
419 static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
428 size = sizeof(*je) + thread_number * sizeof(char) + 1;
432 if (!calc_thread_status(je, 1)) {
437 dprint(FD_NET, "server sending status\n");
439 je->nr_running = cpu_to_le32(je->nr_running);
440 je->nr_ramp = cpu_to_le32(je->nr_ramp);
441 je->nr_pending = cpu_to_le32(je->nr_pending);
442 je->files_open = cpu_to_le32(je->files_open);
443 je->m_rate = cpu_to_le32(je->m_rate);
444 je->t_rate = cpu_to_le32(je->t_rate);
445 je->m_iops = cpu_to_le32(je->m_iops);
446 je->t_iops = cpu_to_le32(je->t_iops);
448 for (i = 0; i < 2; i++) {
449 je->rate[i] = cpu_to_le32(je->rate[i]);
450 je->iops[i] = cpu_to_le32(je->iops[i]);
453 je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
454 je->eta_sec = cpu_to_le64(je->eta_sec);
455 je->is_pow2 = cpu_to_le32(je->is_pow2);
457 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, cmd->tag);
462 static int handle_command(struct fio_net_cmd *cmd)
466 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%lx\n",
467 fio_server_op(cmd->opcode), cmd->pdu_len, cmd->tag);
469 switch (cmd->opcode) {
470 case FIO_NET_CMD_QUIT:
471 fio_terminate_threads(TERMINATE_ALL);
473 case FIO_NET_CMD_EXIT:
476 case FIO_NET_CMD_JOB:
477 ret = handle_job_cmd(cmd);
479 case FIO_NET_CMD_JOBLINE:
480 ret = handle_jobline_cmd(cmd);
482 case FIO_NET_CMD_PROBE:
483 ret = handle_probe_cmd(cmd);
485 case FIO_NET_CMD_SEND_ETA:
486 ret = handle_send_eta_cmd(cmd);
489 log_err("fio: unknown opcode: %s\n",fio_server_op(cmd->opcode));
496 static int handle_connection(int sk, int block)
498 struct fio_net_cmd *cmd = NULL;
502 while (!exit_backend) {
503 struct pollfd pfd = {
510 ret = poll(&pfd, 1, 100);
514 log_err("fio: poll: %s\n", strerror(errno));
522 if (pfd.revents & POLLIN)
524 if (pfd.revents & (POLLERR|POLLHUP)) {
528 } while (!exit_backend);
533 cmd = fio_net_recv_cmd(sk);
539 ret = handle_command(cmd);
553 void fio_server_idle_loop(void)
555 if (!first_cmd_check)
556 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_RUN, 0, NULL);
558 handle_connection(server_fd, 0);
561 static int accept_loop(int listen_sk)
563 struct sockaddr_in addr;
564 fio_socklen_t len = sizeof(addr);
566 int ret, sk, flags, exitval = 0;
568 dprint(FD_NET, "server enter accept loop\n");
570 flags = fcntl(listen_sk, F_GETFL);
572 fcntl(listen_sk, F_SETFL, flags);
577 ret = poll(&pfd, 1, 100);
581 log_err("fio: poll: %s\n", strerror(errno));
586 if (pfd.revents & POLLIN)
588 } while (!exit_backend);
593 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
595 log_err("fio: accept: %s\n", strerror(errno));
599 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
603 exitval = handle_connection(sk, 1);
615 int fio_server_text_output(const char *buf, size_t len)
618 return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len, 0);
620 return log_local_buf(buf, len);
623 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
625 dst->max_val = cpu_to_le64(src->max_val);
626 dst->min_val = cpu_to_le64(src->min_val);
627 dst->samples = cpu_to_le64(src->samples);
630 * Encode to IEEE 754 for network transfer
632 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
633 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
636 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
640 for (i = 0; i < 2; i++) {
641 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
642 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
643 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
644 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
645 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
646 dst->agg[i] = cpu_to_le64(src->agg[i]);
649 dst->kb_base = cpu_to_le32(src->kb_base);
650 dst->groupid = cpu_to_le32(src->groupid);
654 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
655 * into a single payload.
657 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
662 dprint(FD_NET, "server sending end stats\n");
664 memset(&p, 0, sizeof(p));
666 strcpy(p.ts.name, ts->name);
667 strcpy(p.ts.verror, ts->verror);
668 strcpy(p.ts.description, ts->description);
670 p.ts.error = cpu_to_le32(ts->error);
671 p.ts.groupid = cpu_to_le32(ts->groupid);
672 p.ts.pid = cpu_to_le32(ts->pid);
673 p.ts.members = cpu_to_le32(ts->members);
675 for (i = 0; i < 2; i++) {
676 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
677 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
678 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
679 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
682 p.ts.usr_time = cpu_to_le64(ts->usr_time);
683 p.ts.sys_time = cpu_to_le64(ts->sys_time);
684 p.ts.ctx = cpu_to_le64(ts->ctx);
685 p.ts.minf = cpu_to_le64(ts->minf);
686 p.ts.majf = cpu_to_le64(ts->majf);
687 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
689 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
690 fio_fp64_t *src = &ts->percentile_list[i];
691 fio_fp64_t *dst = &p.ts.percentile_list[i];
693 dst->u.i = __cpu_to_le64(fio_double_to_uint64(src->u.f));
696 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
697 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
698 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
699 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
702 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
703 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
704 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
707 for (i = 0; i < 2; i++)
708 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
709 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
711 for (i = 0; i < 3; i++) {
712 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
713 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
716 p.ts.total_submit = cpu_to_le64(ts->total_submit);
717 p.ts.total_complete = cpu_to_le64(ts->total_complete);
719 for (i = 0; i < 2; i++) {
720 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
721 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
724 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
725 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
726 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
727 p.ts.first_error = cpu_to_le32(ts->first_error);
728 p.ts.kb_base = cpu_to_le32(ts->kb_base);
730 convert_gs(&p.rs, rs);
732 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0);
735 void fio_server_send_gs(struct group_run_stats *rs)
737 struct group_run_stats gs;
739 dprint(FD_NET, "server sending group run stats\n");
742 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0);
745 static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
749 for (i = 0; i < 2; i++) {
750 dst->ios[i] = cpu_to_le32(src->ios[i]);
751 dst->merges[i] = cpu_to_le32(src->merges[i]);
752 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
753 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
756 dst->io_ticks = cpu_to_le32(src->io_ticks);
757 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
758 dst->slavecount = cpu_to_le32(src->slavecount);
759 dst->max_util.u.i = __cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
762 static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
766 strcpy((char *) dst->name, (char *) src->name);
768 for (i = 0; i < 2; i++) {
769 dst->ios[i] = cpu_to_le32(src->ios[i]);
770 dst->merges[i] = cpu_to_le32(src->merges[i]);
771 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
772 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
775 dst->io_ticks = cpu_to_le32(src->io_ticks);
776 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
777 dst->msec = cpu_to_le64(src->msec);
780 void fio_server_send_du(void)
782 struct disk_util *du;
783 struct flist_head *entry;
784 struct cmd_du_pdu pdu;
786 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
788 memset(&pdu, 0, sizeof(pdu));
790 flist_for_each(entry, &disk_list) {
791 du = flist_entry(entry, struct disk_util, list);
793 convert_dus(&pdu.dus, &du->dus);
794 convert_agg(&pdu.agg, &du->agg);
796 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), 0);
800 int fio_server_log(const char *format, ...)
806 dprint(FD_NET, "server log\n");
808 va_start(args, format);
809 len = vsnprintf(buffer, sizeof(buffer), format, args);
812 return fio_server_text_output(buffer, len);
815 static int fio_init_server_ip(void)
817 struct sockaddr *addr;
818 fio_socklen_t socklen;
822 sk = socket(AF_INET6, SOCK_STREAM, 0);
824 sk = socket(AF_INET, SOCK_STREAM, 0);
827 log_err("fio: socket: %s\n", strerror(errno));
832 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
833 log_err("fio: setsockopt: %s\n", strerror(errno));
838 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
839 log_err("fio: setsockopt: %s\n", strerror(errno));
846 addr = (struct sockaddr *) &saddr_in6;
847 socklen = sizeof(saddr_in6);
848 saddr_in6.sin6_family = AF_INET6;
850 addr = (struct sockaddr *) &saddr_in;
851 socklen = sizeof(saddr_in);
852 saddr_in.sin_family = AF_INET;
855 if (bind(sk, addr, socklen) < 0) {
856 log_err("fio: bind: %s\n", strerror(errno));
864 static int fio_init_server_sock(void)
866 struct sockaddr_un addr;
871 sk = socket(AF_UNIX, SOCK_STREAM, 0);
873 log_err("fio: socket: %s\n", strerror(errno));
879 memset(&addr, 0, sizeof(addr));
880 addr.sun_family = AF_UNIX;
881 strcpy(addr.sun_path, bind_sock);
884 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
886 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
887 log_err("fio: bind: %s\n", strerror(errno));
896 static int fio_init_server_connection(void)
901 dprint(FD_NET, "starting server\n");
904 sk = fio_init_server_ip();
906 sk = fio_init_server_sock();
918 src = &saddr_in6.sin6_addr;
921 src = &saddr_in.sin_addr;
924 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
926 sprintf(port, ",%u", fio_net_port);
930 strcpy(bind_str, port);
932 strcpy(bind_str, bind_sock);
934 log_info("fio: server listening on %s\n", bind_str);
936 if (listen(sk, 0) < 0) {
937 log_err("fio: listen: %s\n", strerror(errno));
945 * Parse a host/ip/port string. Reads from 'str'.
950 * *ptr is the host, *port is the port, inp is the destination.
952 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
953 * For local domain sockets:
954 * *ptr is the filename, *is_sock is 1.
956 int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
957 int *port, struct in_addr *inp,
958 struct in6_addr *inp6, int *ipv6)
960 const char *host = str;
966 *port = fio_net_port;
969 if (!strncmp(str, "sock:", 5)) {
970 *ptr = strdup(str + 5);
977 * Is it ip:<ip or host>:port
979 if (!strncmp(host, "ip:", 3))
981 else if (!strncmp(host, "ip4:", 4))
983 else if (!strncmp(host, "ip6:", 4)) {
986 } else if (host[0] == ':') {
987 /* String is :port */
990 if (!lport || lport > 65535) {
991 log_err("fio: bad server port %u\n", port);
994 /* no hostname given, we are done */
1000 * If no port seen yet, check if there's a last ':' at the end
1003 portp = strchr(host, ',');
1007 lport = atoi(portp);
1008 if (!lport || lport > 65535) {
1009 log_err("fio: bad server port %u\n", port);
1021 *ptr = strdup(host);
1024 ret = inet_pton(AF_INET6, host, inp6);
1026 ret = inet_pton(AF_INET, host, inp);
1029 struct hostent *hent;
1031 hent = gethostbyname(host);
1033 log_err("fio: failed to resolve <%s>\n", host);
1040 if (hent->h_addrtype != AF_INET6) {
1041 log_info("fio: falling back to IPv4\n");
1044 memcpy(inp6, hent->h_addr_list[0], 16);
1047 if (hent->h_addrtype != AF_INET) {
1048 log_err("fio: lookup type mismatch\n");
1053 memcpy(inp, hent->h_addr_list[0], 4);
1058 *port = fio_net_port;
1064 * Server arg should be one of:
1066 * sock:/path/to/socket
1070 * Where sock uses unix domain sockets, and ip binds the server to
1071 * a specific interface. If no arguments are given to the server, it
1072 * uses IP and binds to 0.0.0.0.
1075 static int fio_handle_server_arg(void)
1077 int port = fio_net_port;
1078 int is_sock, ret = 0;
1080 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
1082 if (!fio_server_arg)
1085 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
1086 &port, &saddr_in.sin_addr,
1087 &saddr_in6.sin6_addr, &use_ipv6);
1089 if (!is_sock && bind_sock) {
1095 fio_net_port = port;
1096 saddr_in.sin_port = htons(port);
1097 saddr_in6.sin6_port = htons(port);
1101 static int fio_server(void)
1105 dprint(FD_NET, "starting server\n");
1107 if (fio_handle_server_arg())
1110 sk = fio_init_server_connection();
1114 ret = accept_loop(sk);
1118 if (fio_server_arg) {
1119 free(fio_server_arg);
1120 fio_server_arg = NULL;
1128 void fio_server_got_signal(int signal)
1130 if (signal == SIGPIPE)
1133 log_info("\nfio: terminating on signal %d\n", signal);
1138 static int check_existing_pidfile(const char *pidfile)
1145 if (stat(pidfile, &sb))
1148 f = fopen(pidfile, "r");
1152 if (fread(buf, sb.st_size, 1, f) <= 0) {
1159 if (kill(pid, SIGCONT) < 0)
1160 return errno != ESRCH;
1165 static int write_pid(pid_t pid, const char *pidfile)
1169 fpid = fopen(pidfile, "w");
1171 log_err("fio: failed opening pid file %s\n", pidfile);
1175 fprintf(fpid, "%u\n", (unsigned int) pid);
1181 * If pidfile is specified, background us.
1183 int fio_start_server(char *pidfile)
1190 WSAStartup(MAKEWORD(2,2), &wsd);
1194 return fio_server();
1196 if (check_existing_pidfile(pidfile)) {
1197 log_err("fio: pidfile %s exists and server appears alive\n",
1204 log_err("fio: failed server fork: %s", strerror(errno));
1208 int ret = write_pid(pid, pidfile);
1214 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1216 close(STDIN_FILENO);
1217 close(STDOUT_FILENO);
1218 close(STDERR_FILENO);
1230 void fio_server_set_arg(const char *arg)
1232 fio_server_arg = strdup(arg);