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] = {
58 const char *fio_server_op(unsigned int op)
62 if (op < FIO_NET_CMD_NR)
63 return fio_server_ops[op];
65 sprintf(buf, "UNKNOWN/%d", op);
69 int fio_send_data(int sk, const void *p, unsigned int len)
71 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_PDU);
74 int ret = send(sk, p, len, 0);
84 else if (errno == EAGAIN || errno == EINTR)
88 } while (!exit_backend);
96 int fio_recv_data(int sk, void *p, unsigned int len)
99 int ret = recv(sk, p, len, MSG_WAITALL);
109 else if (errno == EAGAIN || errno == EINTR)
113 } while (!exit_backend);
121 static int verify_convert_cmd(struct fio_net_cmd *cmd)
125 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
126 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
128 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
129 if (crc != cmd->cmd_crc16) {
130 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
131 cmd->cmd_crc16, crc);
135 cmd->version = le16_to_cpu(cmd->version);
136 cmd->opcode = le16_to_cpu(cmd->opcode);
137 cmd->flags = le32_to_cpu(cmd->flags);
138 cmd->tag = le64_to_cpu(cmd->tag);
139 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
141 switch (cmd->version) {
145 log_err("fio: bad server cmd version %d\n", cmd->version);
149 if (cmd->pdu_len > FIO_SERVER_MAX_PDU) {
150 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
158 * Read (and defragment, if necessary) incoming commands
160 struct fio_net_cmd *fio_net_recv_cmd(int sk)
162 struct fio_net_cmd cmd, *cmdret = NULL;
163 size_t cmd_size = 0, pdu_offset = 0;
169 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
173 /* We have a command, verify it and swap if need be */
174 ret = verify_convert_cmd(&cmd);
179 /* if this is text, add room for \0 at the end */
180 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
183 cmd_size += cmd.pdu_len;
185 cmdret = realloc(cmdret, cmd_size);
188 memcpy(cmdret, &cmd, sizeof(cmd));
189 else if (cmdret->opcode != cmd.opcode) {
190 log_err("fio: fragment opcode mismatch (%d != %d)\n",
191 cmdret->opcode, cmd.opcode);
199 /* There's payload, get it */
200 pdu = (void *) cmdret->payload + pdu_offset;
201 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
205 /* Verify payload crc */
206 crc = fio_crc16(pdu, cmd.pdu_len);
207 if (crc != cmd.pdu_crc16) {
208 log_err("fio: server bad crc on payload ");
209 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
214 pdu_offset += cmd.pdu_len;
216 cmdret->pdu_len += cmd.pdu_len;
218 } while (cmd.flags & FIO_NET_CMD_F_MORE);
224 /* zero-terminate text input */
225 if (cmdret->pdu_len) {
226 if (cmdret->opcode == FIO_NET_CMD_TEXT) {
227 struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmdret->payload;
228 char *buf = (char *) pdu->buf;
230 buf[pdu->buf_len ] = '\0';
231 } else if (cmdret->opcode == FIO_NET_CMD_JOB) {
232 char *buf = (char *) cmdret->payload;
234 buf[cmdret->pdu_len ] = '\0';
238 /* frag flag is internal */
239 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
245 void fio_net_cmd_crc(struct fio_net_cmd *cmd)
249 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
251 pdu_len = le32_to_cpu(cmd->pdu_len);
253 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(cmd->payload, pdu_len));
256 int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
259 struct fio_net_cmd *cmd = NULL;
260 size_t this_len, cur_len = 0;
265 if (this_len > FIO_SERVER_MAX_PDU)
266 this_len = FIO_SERVER_MAX_PDU;
268 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
272 cur_len = sizeof(*cmd) + this_len;
273 cmd = malloc(cur_len);
276 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
279 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
281 fio_net_cmd_crc(cmd);
283 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
286 } while (!ret && size);
294 static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
296 struct fio_net_cmd cmd;
298 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
299 fio_net_cmd_crc(&cmd);
301 return fio_send_data(sk, &cmd, sizeof(cmd));
305 * If 'list' is non-NULL, then allocate and store the sent command for
306 * later verification.
308 int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
309 struct flist_head *list)
311 struct fio_net_int_cmd *cmd;
315 return fio_net_send_simple_stack_cmd(sk, opcode, tag);
317 cmd = malloc(sizeof(*cmd));
319 fio_init_net_cmd(&cmd->cmd, opcode, NULL, 0, (uintptr_t) cmd);
320 fio_net_cmd_crc(&cmd->cmd);
322 INIT_FLIST_HEAD(&cmd->list);
323 gettimeofday(&cmd->tv, NULL);
324 cmd->saved_tag = tag;
326 ret = fio_send_data(sk, &cmd->cmd, sizeof(cmd->cmd));
332 flist_add_tail(&cmd->list, list);
336 static int fio_server_send_quit_cmd(void)
338 dprint(FD_NET, "server: sending quit\n");
339 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0, NULL);
342 static int handle_job_cmd(struct fio_net_cmd *cmd)
344 char *buf = (char *) cmd->payload;
345 struct cmd_start_pdu spdu;
346 struct cmd_end_pdu epdu;
349 if (parse_jobs_ini(buf, 1, 0)) {
350 fio_server_send_quit_cmd();
354 spdu.jobs = cpu_to_le32(thread_number);
355 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), 0);
360 fio_net_send_cmd(server_fd, FIO_NET_CMD_STOP, &epdu, sizeof(epdu), 0);
362 fio_server_send_quit_cmd();
368 static int handle_jobline_cmd(struct fio_net_cmd *cmd)
370 void *pdu = cmd->payload;
371 struct cmd_single_line_pdu *cslp;
372 struct cmd_line_pdu *clp;
373 unsigned long offset;
378 clp->lines = le16_to_cpu(clp->lines);
379 argv = malloc(clp->lines * sizeof(char *));
380 offset = sizeof(*clp);
382 dprint(FD_NET, "server: %d command line args\n", clp->lines);
384 for (i = 0; i < clp->lines; i++) {
386 argv[i] = (char *) cslp->text;
388 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
389 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
392 if (parse_cmd_line(clp->lines, argv)) {
393 fio_server_send_quit_cmd();
400 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0, NULL);
403 fio_server_send_quit_cmd();
409 static int handle_probe_cmd(struct fio_net_cmd *cmd)
411 struct cmd_probe_pdu probe;
413 dprint(FD_NET, "server: sending probe reply\n");
415 memset(&probe, 0, sizeof(probe));
416 gethostname((char *) probe.hostname, sizeof(probe.hostname));
417 #ifdef FIO_BIG_ENDIAN
420 probe.fio_major = FIO_MAJOR;
421 probe.fio_minor = FIO_MINOR;
422 probe.fio_patch = FIO_PATCH;
425 probe.arch = FIO_ARCH;
427 probe.bpp = sizeof(void *);
429 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), cmd->tag);
432 static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
441 size = sizeof(*je) + thread_number * sizeof(char) + 1;
445 if (!calc_thread_status(je, 1)) {
450 dprint(FD_NET, "server sending status\n");
452 je->nr_running = cpu_to_le32(je->nr_running);
453 je->nr_ramp = cpu_to_le32(je->nr_ramp);
454 je->nr_pending = cpu_to_le32(je->nr_pending);
455 je->files_open = cpu_to_le32(je->files_open);
457 for (i = 0; i < 2; i++) {
458 je->m_rate[i] = cpu_to_le32(je->m_rate[i]);
459 je->t_rate[i] = cpu_to_le32(je->t_rate[i]);
460 je->m_iops[i] = cpu_to_le32(je->m_iops[i]);
461 je->t_iops[i] = cpu_to_le32(je->t_iops[i]);
462 je->rate[i] = cpu_to_le32(je->rate[i]);
463 je->iops[i] = cpu_to_le32(je->iops[i]);
466 je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
467 je->eta_sec = cpu_to_le64(je->eta_sec);
468 je->nr_threads = cpu_to_le32(je->nr_threads);
470 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, cmd->tag);
475 static int handle_command(struct fio_net_cmd *cmd)
479 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%lx\n",
480 fio_server_op(cmd->opcode), cmd->pdu_len, cmd->tag);
482 switch (cmd->opcode) {
483 case FIO_NET_CMD_QUIT:
484 fio_terminate_threads(TERMINATE_ALL);
486 case FIO_NET_CMD_EXIT:
489 case FIO_NET_CMD_JOB:
490 ret = handle_job_cmd(cmd);
492 case FIO_NET_CMD_JOBLINE:
493 ret = handle_jobline_cmd(cmd);
495 case FIO_NET_CMD_PROBE:
496 ret = handle_probe_cmd(cmd);
498 case FIO_NET_CMD_SEND_ETA:
499 ret = handle_send_eta_cmd(cmd);
502 log_err("fio: unknown opcode: %s\n",fio_server_op(cmd->opcode));
509 static int handle_connection(int sk, int block)
511 struct fio_net_cmd *cmd = NULL;
515 while (!exit_backend) {
516 struct pollfd pfd = {
523 ret = poll(&pfd, 1, 100);
527 log_err("fio: poll: %s\n", strerror(errno));
535 if (pfd.revents & POLLIN)
537 if (pfd.revents & (POLLERR|POLLHUP)) {
541 } while (!exit_backend);
546 cmd = fio_net_recv_cmd(sk);
552 ret = handle_command(cmd);
566 void fio_server_idle_loop(void)
568 if (!first_cmd_check) {
569 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_RUN, 0, NULL);
573 handle_connection(server_fd, 0);
576 static int accept_loop(int listen_sk)
578 struct sockaddr_in addr;
579 fio_socklen_t len = sizeof(addr);
581 int ret, sk, flags, exitval = 0;
583 dprint(FD_NET, "server enter accept loop\n");
585 flags = fcntl(listen_sk, F_GETFL);
587 fcntl(listen_sk, F_SETFL, flags);
592 ret = poll(&pfd, 1, 100);
596 log_err("fio: poll: %s\n", strerror(errno));
601 if (pfd.revents & POLLIN)
603 } while (!exit_backend);
608 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
610 log_err("fio: accept: %s\n", strerror(errno));
614 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
618 exitval = handle_connection(sk, 1);
630 int fio_server_text_output(int level, const char *buf, size_t len)
632 struct cmd_text_pdu *pdu;
637 return log_local_buf(buf, len);
639 tlen = sizeof(*pdu) + len;
642 pdu->level = __cpu_to_le32(level);
643 pdu->buf_len = __cpu_to_le32(len);
645 gettimeofday(&tv, NULL);
646 pdu->log_sec = __cpu_to_le64(tv.tv_sec);
647 pdu->log_usec = __cpu_to_le64(tv.tv_usec);
649 memcpy(pdu->buf, buf, len);
651 fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, pdu, tlen, 0);
656 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
658 dst->max_val = cpu_to_le64(src->max_val);
659 dst->min_val = cpu_to_le64(src->min_val);
660 dst->samples = cpu_to_le64(src->samples);
663 * Encode to IEEE 754 for network transfer
665 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
666 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
669 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
673 for (i = 0; i < 2; i++) {
674 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
675 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
676 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
677 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
678 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
679 dst->agg[i] = cpu_to_le64(src->agg[i]);
682 dst->kb_base = cpu_to_le32(src->kb_base);
683 dst->groupid = cpu_to_le32(src->groupid);
687 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
688 * into a single payload.
690 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
695 dprint(FD_NET, "server sending end stats\n");
697 memset(&p, 0, sizeof(p));
699 strcpy(p.ts.name, ts->name);
700 strcpy(p.ts.verror, ts->verror);
701 strcpy(p.ts.description, ts->description);
703 p.ts.error = cpu_to_le32(ts->error);
704 p.ts.groupid = cpu_to_le32(ts->groupid);
705 p.ts.pid = cpu_to_le32(ts->pid);
706 p.ts.members = cpu_to_le32(ts->members);
708 for (i = 0; i < 2; i++) {
709 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
710 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
711 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
712 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
715 p.ts.usr_time = cpu_to_le64(ts->usr_time);
716 p.ts.sys_time = cpu_to_le64(ts->sys_time);
717 p.ts.ctx = cpu_to_le64(ts->ctx);
718 p.ts.minf = cpu_to_le64(ts->minf);
719 p.ts.majf = cpu_to_le64(ts->majf);
720 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
722 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
723 fio_fp64_t *src = &ts->percentile_list[i];
724 fio_fp64_t *dst = &p.ts.percentile_list[i];
726 dst->u.i = __cpu_to_le64(fio_double_to_uint64(src->u.f));
729 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
730 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
731 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
732 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
735 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
736 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
737 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
740 for (i = 0; i < 2; i++)
741 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
742 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
744 for (i = 0; i < 3; i++) {
745 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
746 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
749 p.ts.total_submit = cpu_to_le64(ts->total_submit);
750 p.ts.total_complete = cpu_to_le64(ts->total_complete);
752 for (i = 0; i < 2; i++) {
753 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
754 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
757 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
758 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
759 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
760 p.ts.first_error = cpu_to_le32(ts->first_error);
761 p.ts.kb_base = cpu_to_le32(ts->kb_base);
763 convert_gs(&p.rs, rs);
765 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0);
768 void fio_server_send_gs(struct group_run_stats *rs)
770 struct group_run_stats gs;
772 dprint(FD_NET, "server sending group run stats\n");
775 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0);
778 static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
782 for (i = 0; i < 2; i++) {
783 dst->ios[i] = cpu_to_le32(src->ios[i]);
784 dst->merges[i] = cpu_to_le32(src->merges[i]);
785 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
786 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
789 dst->io_ticks = cpu_to_le32(src->io_ticks);
790 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
791 dst->slavecount = cpu_to_le32(src->slavecount);
792 dst->max_util.u.i = __cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
795 static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
799 strcpy((char *) dst->name, (char *) src->name);
801 for (i = 0; i < 2; i++) {
802 dst->ios[i] = cpu_to_le32(src->ios[i]);
803 dst->merges[i] = cpu_to_le32(src->merges[i]);
804 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
805 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
808 dst->io_ticks = cpu_to_le32(src->io_ticks);
809 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
810 dst->msec = cpu_to_le64(src->msec);
813 void fio_server_send_du(void)
815 struct disk_util *du;
816 struct flist_head *entry;
817 struct cmd_du_pdu pdu;
819 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
821 memset(&pdu, 0, sizeof(pdu));
823 flist_for_each(entry, &disk_list) {
824 du = flist_entry(entry, struct disk_util, list);
826 convert_dus(&pdu.dus, &du->dus);
827 convert_agg(&pdu.agg, &du->agg);
829 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), 0);
833 void fio_server_send_add_job(struct thread_options *o, const char *ioengine)
835 struct cmd_add_job_pdu pdu;
838 strcpy((char *) pdu.jobname, o->name);
839 strcpy((char *) pdu.ioengine, ioengine);
841 pdu.iodepth = cpu_to_le32(o->iodepth);
842 pdu.rw = cpu_to_le32(o->td_ddir);
844 for (i = 0; i < 2; i++) {
845 pdu.min_bs[i] = cpu_to_le32(o->min_bs[i]);
846 pdu.max_bs[i] = cpu_to_le32(o->max_bs[i]);
849 pdu.numjobs = cpu_to_le32(o->numjobs);
850 pdu.group_reporting = cpu_to_le32(o->group_reporting);
852 fio_net_send_cmd(server_fd, FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), 0);
855 static int fio_init_server_ip(void)
857 struct sockaddr *addr;
858 fio_socklen_t socklen;
862 sk = socket(AF_INET6, SOCK_STREAM, 0);
864 sk = socket(AF_INET, SOCK_STREAM, 0);
867 log_err("fio: socket: %s\n", strerror(errno));
872 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
873 log_err("fio: setsockopt: %s\n", strerror(errno));
878 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
879 log_err("fio: setsockopt: %s\n", strerror(errno));
886 addr = (struct sockaddr *) &saddr_in6;
887 socklen = sizeof(saddr_in6);
888 saddr_in6.sin6_family = AF_INET6;
890 addr = (struct sockaddr *) &saddr_in;
891 socklen = sizeof(saddr_in);
892 saddr_in.sin_family = AF_INET;
895 if (bind(sk, addr, socklen) < 0) {
896 log_err("fio: bind: %s\n", strerror(errno));
904 static int fio_init_server_sock(void)
906 struct sockaddr_un addr;
911 sk = socket(AF_UNIX, SOCK_STREAM, 0);
913 log_err("fio: socket: %s\n", strerror(errno));
919 memset(&addr, 0, sizeof(addr));
920 addr.sun_family = AF_UNIX;
921 strcpy(addr.sun_path, bind_sock);
924 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
926 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
927 log_err("fio: bind: %s\n", strerror(errno));
936 static int fio_init_server_connection(void)
941 dprint(FD_NET, "starting server\n");
944 sk = fio_init_server_ip();
946 sk = fio_init_server_sock();
958 src = &saddr_in6.sin6_addr;
961 src = &saddr_in.sin_addr;
964 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
966 sprintf(port, ",%u", fio_net_port);
970 strcpy(bind_str, port);
972 strcpy(bind_str, bind_sock);
974 log_info("fio: server listening on %s\n", bind_str);
976 if (listen(sk, 0) < 0) {
977 log_err("fio: listen: %s\n", strerror(errno));
984 int fio_server_parse_host(const char *host, int *ipv6, struct in_addr *inp,
985 struct in6_addr *inp6)
991 ret = inet_pton(AF_INET6, host, inp6);
993 ret = inet_pton(AF_INET, host, inp);
996 struct hostent *hent;
998 hent = gethostbyname(host);
1000 log_err("fio: failed to resolve <%s>\n", host);
1005 if (hent->h_addrtype != AF_INET6) {
1006 log_info("fio: falling back to IPv4\n");
1009 memcpy(inp6, hent->h_addr_list[0], 16);
1012 if (hent->h_addrtype != AF_INET) {
1013 log_err("fio: lookup type mismatch\n");
1016 memcpy(inp, hent->h_addr_list[0], 4);
1025 * Parse a host/ip/port string. Reads from 'str'.
1030 * *ptr is the host, *port is the port, inp is the destination.
1032 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
1033 * For local domain sockets:
1034 * *ptr is the filename, *is_sock is 1.
1036 int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
1037 int *port, struct in_addr *inp,
1038 struct in6_addr *inp6, int *ipv6)
1040 const char *host = str;
1046 *port = fio_net_port;
1049 if (!strncmp(str, "sock:", 5)) {
1050 *ptr = strdup(str + 5);
1057 * Is it ip:<ip or host>:port
1059 if (!strncmp(host, "ip:", 3))
1061 else if (!strncmp(host, "ip4:", 4))
1063 else if (!strncmp(host, "ip6:", 4)) {
1066 } else if (host[0] == ':') {
1067 /* String is :port */
1070 if (!lport || lport > 65535) {
1071 log_err("fio: bad server port %u\n", port);
1074 /* no hostname given, we are done */
1080 * If no port seen yet, check if there's a last ':' at the end
1083 portp = strchr(host, ',');
1087 lport = atoi(portp);
1088 if (!lport || lport > 65535) {
1089 log_err("fio: bad server port %u\n", port);
1101 *ptr = strdup(host);
1103 if (fio_server_parse_host(*ptr, ipv6, inp, inp6)) {
1110 *port = fio_net_port;
1116 * Server arg should be one of:
1118 * sock:/path/to/socket
1122 * Where sock uses unix domain sockets, and ip binds the server to
1123 * a specific interface. If no arguments are given to the server, it
1124 * uses IP and binds to 0.0.0.0.
1127 static int fio_handle_server_arg(void)
1129 int port = fio_net_port;
1130 int is_sock, ret = 0;
1132 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
1134 if (!fio_server_arg)
1137 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
1138 &port, &saddr_in.sin_addr,
1139 &saddr_in6.sin6_addr, &use_ipv6);
1141 if (!is_sock && bind_sock) {
1147 fio_net_port = port;
1148 saddr_in.sin_port = htons(port);
1149 saddr_in6.sin6_port = htons(port);
1153 static int fio_server(void)
1157 dprint(FD_NET, "starting server\n");
1159 if (fio_handle_server_arg())
1162 sk = fio_init_server_connection();
1166 ret = accept_loop(sk);
1170 if (fio_server_arg) {
1171 free(fio_server_arg);
1172 fio_server_arg = NULL;
1180 void fio_server_got_signal(int signal)
1182 if (signal == SIGPIPE)
1185 log_info("\nfio: terminating on signal %d\n", signal);
1190 static int check_existing_pidfile(const char *pidfile)
1197 if (stat(pidfile, &sb))
1200 f = fopen(pidfile, "r");
1204 if (fread(buf, sb.st_size, 1, f) <= 0) {
1211 if (kill(pid, SIGCONT) < 0)
1212 return errno != ESRCH;
1217 static int write_pid(pid_t pid, const char *pidfile)
1221 fpid = fopen(pidfile, "w");
1223 log_err("fio: failed opening pid file %s\n", pidfile);
1227 fprintf(fpid, "%u\n", (unsigned int) pid);
1233 * If pidfile is specified, background us.
1235 int fio_start_server(char *pidfile)
1242 WSAStartup(MAKEWORD(2,2), &wsd);
1246 return fio_server();
1248 if (check_existing_pidfile(pidfile)) {
1249 log_err("fio: pidfile %s exists and server appears alive\n",
1256 log_err("fio: failed server fork: %s", strerror(errno));
1260 int ret = write_pid(pid, pidfile);
1266 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1268 close(STDIN_FILENO);
1269 close(STDOUT_FILENO);
1270 close(STDERR_FILENO);
1282 void fio_server_set_arg(const char *arg)
1284 fio_server_arg = strdup(arg);