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 #include "fio_version.h"
27 int fio_net_port = FIO_NET_PORT;
31 static int server_fd = -1;
32 static char *fio_server_arg;
33 static char *bind_sock;
34 static struct sockaddr_in saddr_in;
35 static struct sockaddr_in6 saddr_in6;
36 static int first_cmd_check;
39 static const char *fio_server_ops[FIO_NET_CMD_NR] = {
59 const char *fio_server_op(unsigned int op)
63 if (op < FIO_NET_CMD_NR)
64 return fio_server_ops[op];
66 sprintf(buf, "UNKNOWN/%d", op);
70 int fio_send_data(int sk, const void *p, unsigned int len)
72 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_FRAGMENT_PDU);
75 int ret = send(sk, p, len, 0);
85 else if (errno == EAGAIN || errno == EINTR)
89 } while (!exit_backend);
100 int fio_recv_data(int sk, void *p, unsigned int len)
103 int ret = recv(sk, p, len, MSG_WAITALL);
113 else if (errno == EAGAIN || errno == EINTR)
117 } while (!exit_backend);
125 static int verify_convert_cmd(struct fio_net_cmd *cmd)
129 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
130 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
132 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
133 if (crc != cmd->cmd_crc16) {
134 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
135 cmd->cmd_crc16, crc);
139 cmd->version = le16_to_cpu(cmd->version);
140 cmd->opcode = le16_to_cpu(cmd->opcode);
141 cmd->flags = le32_to_cpu(cmd->flags);
142 cmd->tag = le64_to_cpu(cmd->tag);
143 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
145 switch (cmd->version) {
149 log_err("fio: bad server cmd version %d\n", cmd->version);
153 if (cmd->pdu_len > FIO_SERVER_MAX_FRAGMENT_PDU) {
154 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
162 * Read (and defragment, if necessary) incoming commands
164 struct fio_net_cmd *fio_net_recv_cmd(int sk)
166 struct fio_net_cmd cmd, *cmdret = NULL;
167 size_t cmd_size = 0, pdu_offset = 0;
173 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
177 /* We have a command, verify it and swap if need be */
178 ret = verify_convert_cmd(&cmd);
183 /* if this is text, add room for \0 at the end */
184 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
187 cmd_size += cmd.pdu_len;
189 cmdret = realloc(cmdret, cmd_size);
192 memcpy(cmdret, &cmd, sizeof(cmd));
193 else if (cmdret->opcode != cmd.opcode) {
194 log_err("fio: fragment opcode mismatch (%d != %d)\n",
195 cmdret->opcode, cmd.opcode);
203 /* There's payload, get it */
204 pdu = (void *) cmdret->payload + pdu_offset;
205 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
209 /* Verify payload crc */
210 crc = fio_crc16(pdu, cmd.pdu_len);
211 if (crc != cmd.pdu_crc16) {
212 log_err("fio: server bad crc on payload ");
213 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
218 pdu_offset += cmd.pdu_len;
220 cmdret->pdu_len += cmd.pdu_len;
222 } while (cmd.flags & FIO_NET_CMD_F_MORE);
228 /* zero-terminate text input */
229 if (cmdret->pdu_len) {
230 if (cmdret->opcode == FIO_NET_CMD_TEXT) {
231 struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmdret->payload;
232 char *buf = (char *) pdu->buf;
234 buf[pdu->buf_len ] = '\0';
235 } else if (cmdret->opcode == FIO_NET_CMD_JOB) {
236 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmdret->payload;
237 char *buf = (char *) pdu->buf;
238 int len = le32_to_cpu(pdu->buf_len);
244 /* frag flag is internal */
245 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
251 void fio_net_cmd_crc(struct fio_net_cmd *cmd)
255 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
257 pdu_len = le32_to_cpu(cmd->pdu_len);
259 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(cmd->payload, pdu_len));
262 int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
265 struct fio_net_cmd *cmd = NULL;
266 size_t this_len, cur_len = 0;
271 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU)
272 this_len = FIO_SERVER_MAX_FRAGMENT_PDU;
274 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
278 cur_len = sizeof(*cmd) + this_len;
279 cmd = malloc(cur_len);
282 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
285 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
287 fio_net_cmd_crc(cmd);
289 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
292 } while (!ret && size);
300 static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
302 struct fio_net_cmd cmd;
304 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
305 fio_net_cmd_crc(&cmd);
307 return fio_send_data(sk, &cmd, sizeof(cmd));
311 * If 'list' is non-NULL, then allocate and store the sent command for
312 * later verification.
314 int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
315 struct flist_head *list)
317 struct fio_net_int_cmd *cmd;
321 return fio_net_send_simple_stack_cmd(sk, opcode, tag);
323 cmd = malloc(sizeof(*cmd));
325 fio_init_net_cmd(&cmd->cmd, opcode, NULL, 0, (uintptr_t) cmd);
326 fio_net_cmd_crc(&cmd->cmd);
328 INIT_FLIST_HEAD(&cmd->list);
329 gettimeofday(&cmd->tv, NULL);
330 cmd->saved_tag = tag;
332 ret = fio_send_data(sk, &cmd->cmd, sizeof(cmd->cmd));
338 flist_add_tail(&cmd->list, list);
342 static int fio_server_send_quit_cmd(void)
344 dprint(FD_NET, "server: sending quit\n");
345 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0, NULL);
348 static int handle_run_cmd(struct fio_net_cmd *cmd)
350 struct cmd_end_pdu epdu;
356 fio_net_send_cmd(server_fd, FIO_NET_CMD_STOP, &epdu, sizeof(epdu), 0);
358 fio_server_send_quit_cmd();
364 static int handle_job_cmd(struct fio_net_cmd *cmd)
366 struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmd->payload;
367 void *buf = pdu->buf;
368 struct cmd_start_pdu spdu;
370 pdu->buf_len = le32_to_cpu(pdu->buf_len);
371 pdu->client_type = le32_to_cpu(pdu->client_type);
373 if (parse_jobs_ini(buf, 1, 0, pdu->client_type)) {
374 fio_server_send_quit_cmd();
378 spdu.jobs = cpu_to_le32(thread_number);
379 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), 0);
383 static int handle_jobline_cmd(struct fio_net_cmd *cmd)
385 void *pdu = cmd->payload;
386 struct cmd_single_line_pdu *cslp;
387 struct cmd_line_pdu *clp;
388 unsigned long offset;
389 struct cmd_start_pdu spdu;
394 clp->lines = le16_to_cpu(clp->lines);
395 clp->client_type = le16_to_cpu(clp->client_type);
396 argv = malloc(clp->lines * sizeof(char *));
397 offset = sizeof(*clp);
399 dprint(FD_NET, "server: %d command line args\n", clp->lines);
401 for (i = 0; i < clp->lines; i++) {
403 argv[i] = (char *) cslp->text;
405 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
406 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
409 if (parse_cmd_line(clp->lines, argv, clp->client_type)) {
410 fio_server_send_quit_cmd();
417 spdu.jobs = cpu_to_le32(thread_number);
418 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), 0);
422 static int handle_probe_cmd(struct fio_net_cmd *cmd)
424 struct cmd_probe_pdu probe;
426 dprint(FD_NET, "server: sending probe reply\n");
428 memset(&probe, 0, sizeof(probe));
429 gethostname((char *) probe.hostname, sizeof(probe.hostname));
430 #ifdef FIO_BIG_ENDIAN
433 probe.fio_major = FIO_MAJOR;
434 probe.fio_minor = FIO_MINOR;
435 probe.fio_patch = FIO_PATCH;
438 probe.arch = FIO_ARCH;
440 probe.bpp = sizeof(void *);
442 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), cmd->tag);
445 static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
454 size = sizeof(*je) + thread_number * sizeof(char) + 1;
458 if (!calc_thread_status(je, 1)) {
463 dprint(FD_NET, "server sending status\n");
465 je->nr_running = cpu_to_le32(je->nr_running);
466 je->nr_ramp = cpu_to_le32(je->nr_ramp);
467 je->nr_pending = cpu_to_le32(je->nr_pending);
468 je->files_open = cpu_to_le32(je->files_open);
470 for (i = 0; i < 2; i++) {
471 je->m_rate[i] = cpu_to_le32(je->m_rate[i]);
472 je->t_rate[i] = cpu_to_le32(je->t_rate[i]);
473 je->m_iops[i] = cpu_to_le32(je->m_iops[i]);
474 je->t_iops[i] = cpu_to_le32(je->t_iops[i]);
475 je->rate[i] = cpu_to_le32(je->rate[i]);
476 je->iops[i] = cpu_to_le32(je->iops[i]);
479 je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
480 je->eta_sec = cpu_to_le64(je->eta_sec);
481 je->nr_threads = cpu_to_le32(je->nr_threads);
483 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, cmd->tag);
488 static int handle_command(struct fio_net_cmd *cmd)
492 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%lx\n",
493 fio_server_op(cmd->opcode), cmd->pdu_len, cmd->tag);
495 switch (cmd->opcode) {
496 case FIO_NET_CMD_QUIT:
497 fio_terminate_threads(TERMINATE_ALL);
499 case FIO_NET_CMD_EXIT:
502 case FIO_NET_CMD_JOB:
503 ret = handle_job_cmd(cmd);
505 case FIO_NET_CMD_JOBLINE:
506 ret = handle_jobline_cmd(cmd);
508 case FIO_NET_CMD_PROBE:
509 ret = handle_probe_cmd(cmd);
511 case FIO_NET_CMD_SEND_ETA:
512 ret = handle_send_eta_cmd(cmd);
514 case FIO_NET_CMD_RUN:
515 ret = handle_run_cmd(cmd);
518 log_err("fio: unknown opcode: %s\n",fio_server_op(cmd->opcode));
525 static int handle_connection(int sk, int block)
527 struct fio_net_cmd *cmd = NULL;
531 while (!exit_backend) {
532 struct pollfd pfd = {
539 ret = poll(&pfd, 1, 100);
543 log_err("fio: poll: %s\n", strerror(errno));
551 if (pfd.revents & POLLIN)
553 if (pfd.revents & (POLLERR|POLLHUP)) {
557 } while (!exit_backend);
562 cmd = fio_net_recv_cmd(sk);
568 ret = handle_command(cmd);
582 void fio_server_idle_loop(void)
584 if (!first_cmd_check) {
585 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_SERVER_START, 0, NULL);
589 handle_connection(server_fd, 0);
592 static int accept_loop(int listen_sk)
594 struct sockaddr_in addr;
595 fio_socklen_t len = sizeof(addr);
597 int ret, sk, flags, exitval = 0;
599 dprint(FD_NET, "server enter accept loop\n");
601 flags = fcntl(listen_sk, F_GETFL);
603 fcntl(listen_sk, F_SETFL, flags);
608 ret = poll(&pfd, 1, 100);
612 log_err("fio: poll: %s\n", strerror(errno));
617 if (pfd.revents & POLLIN)
619 } while (!exit_backend);
624 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
626 log_err("fio: accept: %s\n", strerror(errno));
630 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
634 exitval = handle_connection(sk, 1);
646 int fio_server_text_output(int level, const char *buf, size_t len)
648 struct cmd_text_pdu *pdu;
653 return log_local_buf(buf, len);
655 tlen = sizeof(*pdu) + len;
658 pdu->level = __cpu_to_le32(level);
659 pdu->buf_len = __cpu_to_le32(len);
661 gettimeofday(&tv, NULL);
662 pdu->log_sec = __cpu_to_le64(tv.tv_sec);
663 pdu->log_usec = __cpu_to_le64(tv.tv_usec);
665 memcpy(pdu->buf, buf, len);
667 fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, pdu, tlen, 0);
672 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
674 dst->max_val = cpu_to_le64(src->max_val);
675 dst->min_val = cpu_to_le64(src->min_val);
676 dst->samples = cpu_to_le64(src->samples);
679 * Encode to IEEE 754 for network transfer
681 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
682 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
685 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
689 for (i = 0; i < 2; i++) {
690 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
691 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
692 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
693 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
694 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
695 dst->agg[i] = cpu_to_le64(src->agg[i]);
698 dst->kb_base = cpu_to_le32(src->kb_base);
699 dst->groupid = cpu_to_le32(src->groupid);
703 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
704 * into a single payload.
706 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
711 dprint(FD_NET, "server sending end stats\n");
713 memset(&p, 0, sizeof(p));
715 strcpy(p.ts.name, ts->name);
716 strcpy(p.ts.verror, ts->verror);
717 strcpy(p.ts.description, ts->description);
719 p.ts.error = cpu_to_le32(ts->error);
720 p.ts.groupid = cpu_to_le32(ts->groupid);
721 p.ts.pid = cpu_to_le32(ts->pid);
722 p.ts.members = cpu_to_le32(ts->members);
724 for (i = 0; i < 2; i++) {
725 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
726 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
727 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
728 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
731 p.ts.usr_time = cpu_to_le64(ts->usr_time);
732 p.ts.sys_time = cpu_to_le64(ts->sys_time);
733 p.ts.ctx = cpu_to_le64(ts->ctx);
734 p.ts.minf = cpu_to_le64(ts->minf);
735 p.ts.majf = cpu_to_le64(ts->majf);
736 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
738 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
739 fio_fp64_t *src = &ts->percentile_list[i];
740 fio_fp64_t *dst = &p.ts.percentile_list[i];
742 dst->u.i = __cpu_to_le64(fio_double_to_uint64(src->u.f));
745 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
746 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
747 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
748 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
751 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
752 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
753 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
756 for (i = 0; i < 2; i++)
757 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
758 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
760 for (i = 0; i < 3; i++) {
761 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
762 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
765 p.ts.total_submit = cpu_to_le64(ts->total_submit);
766 p.ts.total_complete = cpu_to_le64(ts->total_complete);
768 for (i = 0; i < 2; i++) {
769 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
770 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
773 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
774 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
775 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
776 p.ts.first_error = cpu_to_le32(ts->first_error);
777 p.ts.kb_base = cpu_to_le32(ts->kb_base);
779 convert_gs(&p.rs, rs);
781 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0);
784 void fio_server_send_gs(struct group_run_stats *rs)
786 struct group_run_stats gs;
788 dprint(FD_NET, "server sending group run stats\n");
791 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0);
794 static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
798 for (i = 0; i < 2; i++) {
799 dst->ios[i] = cpu_to_le32(src->ios[i]);
800 dst->merges[i] = cpu_to_le32(src->merges[i]);
801 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
802 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
805 dst->io_ticks = cpu_to_le32(src->io_ticks);
806 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
807 dst->slavecount = cpu_to_le32(src->slavecount);
808 dst->max_util.u.i = __cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
811 static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
815 strcpy((char *) dst->name, (char *) src->name);
817 for (i = 0; i < 2; i++) {
818 dst->ios[i] = cpu_to_le32(src->ios[i]);
819 dst->merges[i] = cpu_to_le32(src->merges[i]);
820 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
821 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
824 dst->io_ticks = cpu_to_le32(src->io_ticks);
825 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
826 dst->msec = cpu_to_le64(src->msec);
829 void fio_server_send_du(void)
831 struct disk_util *du;
832 struct flist_head *entry;
833 struct cmd_du_pdu pdu;
835 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
837 memset(&pdu, 0, sizeof(pdu));
839 flist_for_each(entry, &disk_list) {
840 du = flist_entry(entry, struct disk_util, list);
842 convert_dus(&pdu.dus, &du->dus);
843 convert_agg(&pdu.agg, &du->agg);
845 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), 0);
849 void fio_server_send_add_job(struct thread_options *o, const char *ioengine)
851 struct cmd_add_job_pdu pdu;
853 convert_thread_options_to_net(&pdu.top, o);
855 fio_net_send_cmd(server_fd, FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), 0);
858 static int fio_init_server_ip(void)
860 struct sockaddr *addr;
861 fio_socklen_t socklen;
865 sk = socket(AF_INET6, SOCK_STREAM, 0);
867 sk = socket(AF_INET, SOCK_STREAM, 0);
870 log_err("fio: socket: %s\n", strerror(errno));
875 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
876 log_err("fio: setsockopt: %s\n", strerror(errno));
881 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
882 log_err("fio: setsockopt: %s\n", strerror(errno));
889 addr = (struct sockaddr *) &saddr_in6;
890 socklen = sizeof(saddr_in6);
891 saddr_in6.sin6_family = AF_INET6;
893 addr = (struct sockaddr *) &saddr_in;
894 socklen = sizeof(saddr_in);
895 saddr_in.sin_family = AF_INET;
898 if (bind(sk, addr, socklen) < 0) {
899 log_err("fio: bind: %s\n", strerror(errno));
907 static int fio_init_server_sock(void)
909 struct sockaddr_un addr;
914 sk = socket(AF_UNIX, SOCK_STREAM, 0);
916 log_err("fio: socket: %s\n", strerror(errno));
922 memset(&addr, 0, sizeof(addr));
923 addr.sun_family = AF_UNIX;
924 strcpy(addr.sun_path, bind_sock);
927 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
929 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
930 log_err("fio: bind: %s\n", strerror(errno));
939 static int fio_init_server_connection(void)
944 dprint(FD_NET, "starting server\n");
947 sk = fio_init_server_ip();
949 sk = fio_init_server_sock();
961 src = &saddr_in6.sin6_addr;
964 src = &saddr_in.sin_addr;
967 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
969 sprintf(port, ",%u", fio_net_port);
973 strcpy(bind_str, port);
975 strcpy(bind_str, bind_sock);
977 log_info("fio: server listening on %s\n", bind_str);
979 if (listen(sk, 0) < 0) {
980 log_err("fio: listen: %s\n", strerror(errno));
987 int fio_server_parse_host(const char *host, int *ipv6, struct in_addr *inp,
988 struct in6_addr *inp6)
994 ret = inet_pton(AF_INET6, host, inp6);
996 ret = inet_pton(AF_INET, host, inp);
999 struct hostent *hent;
1001 hent = gethostbyname(host);
1003 log_err("fio: failed to resolve <%s>\n", host);
1008 if (hent->h_addrtype != AF_INET6) {
1009 log_info("fio: falling back to IPv4\n");
1012 memcpy(inp6, hent->h_addr_list[0], 16);
1015 if (hent->h_addrtype != AF_INET) {
1016 log_err("fio: lookup type mismatch\n");
1019 memcpy(inp, hent->h_addr_list[0], 4);
1028 * Parse a host/ip/port string. Reads from 'str'.
1033 * *ptr is the host, *port is the port, inp is the destination.
1035 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
1036 * For local domain sockets:
1037 * *ptr is the filename, *is_sock is 1.
1039 int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
1040 int *port, struct in_addr *inp,
1041 struct in6_addr *inp6, int *ipv6)
1043 const char *host = str;
1049 *port = fio_net_port;
1052 if (!strncmp(str, "sock:", 5)) {
1053 *ptr = strdup(str + 5);
1060 * Is it ip:<ip or host>:port
1062 if (!strncmp(host, "ip:", 3))
1064 else if (!strncmp(host, "ip4:", 4))
1066 else if (!strncmp(host, "ip6:", 4)) {
1069 } else if (host[0] == ':') {
1070 /* String is :port */
1073 if (!lport || lport > 65535) {
1074 log_err("fio: bad server port %u\n", port);
1077 /* no hostname given, we are done */
1083 * If no port seen yet, check if there's a last ':' at the end
1086 portp = strchr(host, ',');
1090 lport = atoi(portp);
1091 if (!lport || lport > 65535) {
1092 log_err("fio: bad server port %u\n", port);
1104 *ptr = strdup(host);
1106 if (fio_server_parse_host(*ptr, ipv6, inp, inp6)) {
1113 *port = fio_net_port;
1119 * Server arg should be one of:
1121 * sock:/path/to/socket
1125 * Where sock uses unix domain sockets, and ip binds the server to
1126 * a specific interface. If no arguments are given to the server, it
1127 * uses IP and binds to 0.0.0.0.
1130 static int fio_handle_server_arg(void)
1132 int port = fio_net_port;
1133 int is_sock, ret = 0;
1135 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
1137 if (!fio_server_arg)
1140 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
1141 &port, &saddr_in.sin_addr,
1142 &saddr_in6.sin6_addr, &use_ipv6);
1144 if (!is_sock && bind_sock) {
1150 fio_net_port = port;
1151 saddr_in.sin_port = htons(port);
1152 saddr_in6.sin6_port = htons(port);
1156 static int fio_server(void)
1160 dprint(FD_NET, "starting server\n");
1162 if (fio_handle_server_arg())
1165 sk = fio_init_server_connection();
1169 ret = accept_loop(sk);
1173 if (fio_server_arg) {
1174 free(fio_server_arg);
1175 fio_server_arg = NULL;
1183 void fio_server_got_signal(int signal)
1185 if (signal == SIGPIPE)
1188 log_info("\nfio: terminating on signal %d\n", signal);
1193 static int check_existing_pidfile(const char *pidfile)
1200 if (stat(pidfile, &sb))
1203 f = fopen(pidfile, "r");
1207 if (fread(buf, sb.st_size, 1, f) <= 0) {
1214 if (kill(pid, SIGCONT) < 0)
1215 return errno != ESRCH;
1220 static int write_pid(pid_t pid, const char *pidfile)
1224 fpid = fopen(pidfile, "w");
1226 log_err("fio: failed opening pid file %s\n", pidfile);
1230 fprintf(fpid, "%u\n", (unsigned int) pid);
1236 * If pidfile is specified, background us.
1238 int fio_start_server(char *pidfile)
1245 WSAStartup(MAKEWORD(2,2), &wsd);
1249 return fio_server();
1251 if (check_existing_pidfile(pidfile)) {
1252 log_err("fio: pidfile %s exists and server appears alive\n",
1259 log_err("fio: failed server fork: %s", strerror(errno));
1263 int ret = write_pid(pid, pidfile);
1269 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1271 close(STDIN_FILENO);
1272 close(STDOUT_FILENO);
1273 close(STDERR_FILENO);
1285 void fio_server_set_arg(const char *arg)
1287 fio_server_arg = strdup(arg);