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 char *buf = (char *) cmdret->payload;
238 buf[cmdret->pdu_len ] = '\0';
242 /* frag flag is internal */
243 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
249 void fio_net_cmd_crc(struct fio_net_cmd *cmd)
253 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
255 pdu_len = le32_to_cpu(cmd->pdu_len);
257 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(cmd->payload, pdu_len));
260 int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
263 struct fio_net_cmd *cmd = NULL;
264 size_t this_len, cur_len = 0;
269 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU)
270 this_len = FIO_SERVER_MAX_FRAGMENT_PDU;
272 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
276 cur_len = sizeof(*cmd) + this_len;
277 cmd = malloc(cur_len);
280 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
283 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
285 fio_net_cmd_crc(cmd);
287 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
290 } while (!ret && size);
298 static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
300 struct fio_net_cmd cmd;
302 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
303 fio_net_cmd_crc(&cmd);
305 return fio_send_data(sk, &cmd, sizeof(cmd));
309 * If 'list' is non-NULL, then allocate and store the sent command for
310 * later verification.
312 int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
313 struct flist_head *list)
315 struct fio_net_int_cmd *cmd;
319 return fio_net_send_simple_stack_cmd(sk, opcode, tag);
321 cmd = malloc(sizeof(*cmd));
323 fio_init_net_cmd(&cmd->cmd, opcode, NULL, 0, (uintptr_t) cmd);
324 fio_net_cmd_crc(&cmd->cmd);
326 INIT_FLIST_HEAD(&cmd->list);
327 gettimeofday(&cmd->tv, NULL);
328 cmd->saved_tag = tag;
330 ret = fio_send_data(sk, &cmd->cmd, sizeof(cmd->cmd));
336 flist_add_tail(&cmd->list, list);
340 static int fio_server_send_quit_cmd(void)
342 dprint(FD_NET, "server: sending quit\n");
343 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0, NULL);
346 static int handle_run_cmd(struct fio_net_cmd *cmd)
348 struct cmd_end_pdu epdu;
354 fio_net_send_cmd(server_fd, FIO_NET_CMD_STOP, &epdu, sizeof(epdu), 0);
356 fio_server_send_quit_cmd();
362 static int handle_job_cmd(struct fio_net_cmd *cmd)
364 char *buf = (char *) cmd->payload;
365 struct cmd_start_pdu spdu;
367 if (parse_jobs_ini(buf, 1, 0)) {
368 fio_server_send_quit_cmd();
372 spdu.jobs = cpu_to_le32(thread_number);
373 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), 0);
377 static int handle_jobline_cmd(struct fio_net_cmd *cmd)
379 void *pdu = cmd->payload;
380 struct cmd_single_line_pdu *cslp;
381 struct cmd_line_pdu *clp;
382 unsigned long offset;
383 struct cmd_start_pdu spdu;
388 clp->lines = le16_to_cpu(clp->lines);
389 argv = malloc(clp->lines * sizeof(char *));
390 offset = sizeof(*clp);
392 dprint(FD_NET, "server: %d command line args\n", clp->lines);
394 for (i = 0; i < clp->lines; i++) {
396 argv[i] = (char *) cslp->text;
398 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
399 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
402 if (parse_cmd_line(clp->lines, argv)) {
403 fio_server_send_quit_cmd();
410 spdu.jobs = cpu_to_le32(thread_number);
411 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), 0);
415 static int handle_probe_cmd(struct fio_net_cmd *cmd)
417 struct cmd_probe_pdu probe;
419 dprint(FD_NET, "server: sending probe reply\n");
421 memset(&probe, 0, sizeof(probe));
422 gethostname((char *) probe.hostname, sizeof(probe.hostname));
423 #ifdef FIO_BIG_ENDIAN
426 probe.fio_major = FIO_MAJOR;
427 probe.fio_minor = FIO_MINOR;
428 probe.fio_patch = FIO_PATCH;
431 probe.arch = FIO_ARCH;
433 probe.bpp = sizeof(void *);
435 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), cmd->tag);
438 static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
447 size = sizeof(*je) + thread_number * sizeof(char) + 1;
451 if (!calc_thread_status(je, 1)) {
456 dprint(FD_NET, "server sending status\n");
458 je->nr_running = cpu_to_le32(je->nr_running);
459 je->nr_ramp = cpu_to_le32(je->nr_ramp);
460 je->nr_pending = cpu_to_le32(je->nr_pending);
461 je->files_open = cpu_to_le32(je->files_open);
463 for (i = 0; i < 2; i++) {
464 je->m_rate[i] = cpu_to_le32(je->m_rate[i]);
465 je->t_rate[i] = cpu_to_le32(je->t_rate[i]);
466 je->m_iops[i] = cpu_to_le32(je->m_iops[i]);
467 je->t_iops[i] = cpu_to_le32(je->t_iops[i]);
468 je->rate[i] = cpu_to_le32(je->rate[i]);
469 je->iops[i] = cpu_to_le32(je->iops[i]);
472 je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
473 je->eta_sec = cpu_to_le64(je->eta_sec);
474 je->nr_threads = cpu_to_le32(je->nr_threads);
476 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, cmd->tag);
481 static int handle_command(struct fio_net_cmd *cmd)
485 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%lx\n",
486 fio_server_op(cmd->opcode), cmd->pdu_len, cmd->tag);
488 switch (cmd->opcode) {
489 case FIO_NET_CMD_QUIT:
490 fio_terminate_threads(TERMINATE_ALL);
492 case FIO_NET_CMD_EXIT:
495 case FIO_NET_CMD_JOB:
496 ret = handle_job_cmd(cmd);
498 case FIO_NET_CMD_JOBLINE:
499 ret = handle_jobline_cmd(cmd);
501 case FIO_NET_CMD_PROBE:
502 ret = handle_probe_cmd(cmd);
504 case FIO_NET_CMD_SEND_ETA:
505 ret = handle_send_eta_cmd(cmd);
507 case FIO_NET_CMD_RUN:
508 ret = handle_run_cmd(cmd);
511 log_err("fio: unknown opcode: %s\n",fio_server_op(cmd->opcode));
518 static int handle_connection(int sk, int block)
520 struct fio_net_cmd *cmd = NULL;
524 while (!exit_backend) {
525 struct pollfd pfd = {
532 ret = poll(&pfd, 1, 100);
536 log_err("fio: poll: %s\n", strerror(errno));
544 if (pfd.revents & POLLIN)
546 if (pfd.revents & (POLLERR|POLLHUP)) {
550 } while (!exit_backend);
555 cmd = fio_net_recv_cmd(sk);
561 ret = handle_command(cmd);
575 void fio_server_idle_loop(void)
577 if (!first_cmd_check) {
578 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_SERVER_START, 0, NULL);
582 handle_connection(server_fd, 0);
585 static int accept_loop(int listen_sk)
587 struct sockaddr_in addr;
588 fio_socklen_t len = sizeof(addr);
590 int ret, sk, flags, exitval = 0;
592 dprint(FD_NET, "server enter accept loop\n");
594 flags = fcntl(listen_sk, F_GETFL);
596 fcntl(listen_sk, F_SETFL, flags);
601 ret = poll(&pfd, 1, 100);
605 log_err("fio: poll: %s\n", strerror(errno));
610 if (pfd.revents & POLLIN)
612 } while (!exit_backend);
617 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
619 log_err("fio: accept: %s\n", strerror(errno));
623 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
627 exitval = handle_connection(sk, 1);
639 int fio_server_text_output(int level, const char *buf, size_t len)
641 struct cmd_text_pdu *pdu;
646 return log_local_buf(buf, len);
648 tlen = sizeof(*pdu) + len;
651 pdu->level = __cpu_to_le32(level);
652 pdu->buf_len = __cpu_to_le32(len);
654 gettimeofday(&tv, NULL);
655 pdu->log_sec = __cpu_to_le64(tv.tv_sec);
656 pdu->log_usec = __cpu_to_le64(tv.tv_usec);
658 memcpy(pdu->buf, buf, len);
660 fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, pdu, tlen, 0);
665 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
667 dst->max_val = cpu_to_le64(src->max_val);
668 dst->min_val = cpu_to_le64(src->min_val);
669 dst->samples = cpu_to_le64(src->samples);
672 * Encode to IEEE 754 for network transfer
674 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
675 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
678 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
682 for (i = 0; i < 2; i++) {
683 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
684 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
685 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
686 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
687 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
688 dst->agg[i] = cpu_to_le64(src->agg[i]);
691 dst->kb_base = cpu_to_le32(src->kb_base);
692 dst->groupid = cpu_to_le32(src->groupid);
696 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
697 * into a single payload.
699 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
704 dprint(FD_NET, "server sending end stats\n");
706 memset(&p, 0, sizeof(p));
708 strcpy(p.ts.name, ts->name);
709 strcpy(p.ts.verror, ts->verror);
710 strcpy(p.ts.description, ts->description);
712 p.ts.error = cpu_to_le32(ts->error);
713 p.ts.groupid = cpu_to_le32(ts->groupid);
714 p.ts.pid = cpu_to_le32(ts->pid);
715 p.ts.members = cpu_to_le32(ts->members);
717 for (i = 0; i < 2; i++) {
718 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
719 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
720 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
721 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
724 p.ts.usr_time = cpu_to_le64(ts->usr_time);
725 p.ts.sys_time = cpu_to_le64(ts->sys_time);
726 p.ts.ctx = cpu_to_le64(ts->ctx);
727 p.ts.minf = cpu_to_le64(ts->minf);
728 p.ts.majf = cpu_to_le64(ts->majf);
729 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
731 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
732 fio_fp64_t *src = &ts->percentile_list[i];
733 fio_fp64_t *dst = &p.ts.percentile_list[i];
735 dst->u.i = __cpu_to_le64(fio_double_to_uint64(src->u.f));
738 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
739 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
740 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
741 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
744 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
745 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
746 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
749 for (i = 0; i < 2; i++)
750 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
751 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
753 for (i = 0; i < 3; i++) {
754 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
755 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
758 p.ts.total_submit = cpu_to_le64(ts->total_submit);
759 p.ts.total_complete = cpu_to_le64(ts->total_complete);
761 for (i = 0; i < 2; i++) {
762 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
763 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
766 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
767 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
768 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
769 p.ts.first_error = cpu_to_le32(ts->first_error);
770 p.ts.kb_base = cpu_to_le32(ts->kb_base);
772 convert_gs(&p.rs, rs);
774 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0);
777 void fio_server_send_gs(struct group_run_stats *rs)
779 struct group_run_stats gs;
781 dprint(FD_NET, "server sending group run stats\n");
784 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0);
787 static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
791 for (i = 0; i < 2; i++) {
792 dst->ios[i] = cpu_to_le32(src->ios[i]);
793 dst->merges[i] = cpu_to_le32(src->merges[i]);
794 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
795 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
798 dst->io_ticks = cpu_to_le32(src->io_ticks);
799 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
800 dst->slavecount = cpu_to_le32(src->slavecount);
801 dst->max_util.u.i = __cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
804 static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
808 strcpy((char *) dst->name, (char *) src->name);
810 for (i = 0; i < 2; i++) {
811 dst->ios[i] = cpu_to_le32(src->ios[i]);
812 dst->merges[i] = cpu_to_le32(src->merges[i]);
813 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
814 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
817 dst->io_ticks = cpu_to_le32(src->io_ticks);
818 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
819 dst->msec = cpu_to_le64(src->msec);
822 void fio_server_send_du(void)
824 struct disk_util *du;
825 struct flist_head *entry;
826 struct cmd_du_pdu pdu;
828 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
830 memset(&pdu, 0, sizeof(pdu));
832 flist_for_each(entry, &disk_list) {
833 du = flist_entry(entry, struct disk_util, list);
835 convert_dus(&pdu.dus, &du->dus);
836 convert_agg(&pdu.agg, &du->agg);
838 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), 0);
842 void fio_server_send_add_job(struct thread_options *o, const char *ioengine)
844 struct cmd_add_job_pdu pdu;
846 convert_thread_options_to_net(&pdu.top, o);
848 fio_net_send_cmd(server_fd, FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), 0);
851 static int fio_init_server_ip(void)
853 struct sockaddr *addr;
854 fio_socklen_t socklen;
858 sk = socket(AF_INET6, SOCK_STREAM, 0);
860 sk = socket(AF_INET, SOCK_STREAM, 0);
863 log_err("fio: socket: %s\n", strerror(errno));
868 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
869 log_err("fio: setsockopt: %s\n", strerror(errno));
874 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
875 log_err("fio: setsockopt: %s\n", strerror(errno));
882 addr = (struct sockaddr *) &saddr_in6;
883 socklen = sizeof(saddr_in6);
884 saddr_in6.sin6_family = AF_INET6;
886 addr = (struct sockaddr *) &saddr_in;
887 socklen = sizeof(saddr_in);
888 saddr_in.sin_family = AF_INET;
891 if (bind(sk, addr, socklen) < 0) {
892 log_err("fio: bind: %s\n", strerror(errno));
900 static int fio_init_server_sock(void)
902 struct sockaddr_un addr;
907 sk = socket(AF_UNIX, SOCK_STREAM, 0);
909 log_err("fio: socket: %s\n", strerror(errno));
915 memset(&addr, 0, sizeof(addr));
916 addr.sun_family = AF_UNIX;
917 strcpy(addr.sun_path, bind_sock);
920 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
922 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
923 log_err("fio: bind: %s\n", strerror(errno));
932 static int fio_init_server_connection(void)
937 dprint(FD_NET, "starting server\n");
940 sk = fio_init_server_ip();
942 sk = fio_init_server_sock();
954 src = &saddr_in6.sin6_addr;
957 src = &saddr_in.sin_addr;
960 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
962 sprintf(port, ",%u", fio_net_port);
966 strcpy(bind_str, port);
968 strcpy(bind_str, bind_sock);
970 log_info("fio: server listening on %s\n", bind_str);
972 if (listen(sk, 0) < 0) {
973 log_err("fio: listen: %s\n", strerror(errno));
980 int fio_server_parse_host(const char *host, int *ipv6, struct in_addr *inp,
981 struct in6_addr *inp6)
987 ret = inet_pton(AF_INET6, host, inp6);
989 ret = inet_pton(AF_INET, host, inp);
992 struct hostent *hent;
994 hent = gethostbyname(host);
996 log_err("fio: failed to resolve <%s>\n", host);
1001 if (hent->h_addrtype != AF_INET6) {
1002 log_info("fio: falling back to IPv4\n");
1005 memcpy(inp6, hent->h_addr_list[0], 16);
1008 if (hent->h_addrtype != AF_INET) {
1009 log_err("fio: lookup type mismatch\n");
1012 memcpy(inp, hent->h_addr_list[0], 4);
1021 * Parse a host/ip/port string. Reads from 'str'.
1026 * *ptr is the host, *port is the port, inp is the destination.
1028 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
1029 * For local domain sockets:
1030 * *ptr is the filename, *is_sock is 1.
1032 int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
1033 int *port, struct in_addr *inp,
1034 struct in6_addr *inp6, int *ipv6)
1036 const char *host = str;
1042 *port = fio_net_port;
1045 if (!strncmp(str, "sock:", 5)) {
1046 *ptr = strdup(str + 5);
1053 * Is it ip:<ip or host>:port
1055 if (!strncmp(host, "ip:", 3))
1057 else if (!strncmp(host, "ip4:", 4))
1059 else if (!strncmp(host, "ip6:", 4)) {
1062 } else if (host[0] == ':') {
1063 /* String is :port */
1066 if (!lport || lport > 65535) {
1067 log_err("fio: bad server port %u\n", port);
1070 /* no hostname given, we are done */
1076 * If no port seen yet, check if there's a last ':' at the end
1079 portp = strchr(host, ',');
1083 lport = atoi(portp);
1084 if (!lport || lport > 65535) {
1085 log_err("fio: bad server port %u\n", port);
1097 *ptr = strdup(host);
1099 if (fio_server_parse_host(*ptr, ipv6, inp, inp6)) {
1106 *port = fio_net_port;
1112 * Server arg should be one of:
1114 * sock:/path/to/socket
1118 * Where sock uses unix domain sockets, and ip binds the server to
1119 * a specific interface. If no arguments are given to the server, it
1120 * uses IP and binds to 0.0.0.0.
1123 static int fio_handle_server_arg(void)
1125 int port = fio_net_port;
1126 int is_sock, ret = 0;
1128 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
1130 if (!fio_server_arg)
1133 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
1134 &port, &saddr_in.sin_addr,
1135 &saddr_in6.sin6_addr, &use_ipv6);
1137 if (!is_sock && bind_sock) {
1143 fio_net_port = port;
1144 saddr_in.sin_port = htons(port);
1145 saddr_in6.sin6_port = htons(port);
1149 static int fio_server(void)
1153 dprint(FD_NET, "starting server\n");
1155 if (fio_handle_server_arg())
1158 sk = fio_init_server_connection();
1162 ret = accept_loop(sk);
1166 if (fio_server_arg) {
1167 free(fio_server_arg);
1168 fio_server_arg = NULL;
1176 void fio_server_got_signal(int signal)
1178 if (signal == SIGPIPE)
1181 log_info("\nfio: terminating on signal %d\n", signal);
1186 static int check_existing_pidfile(const char *pidfile)
1193 if (stat(pidfile, &sb))
1196 f = fopen(pidfile, "r");
1200 if (fread(buf, sb.st_size, 1, f) <= 0) {
1207 if (kill(pid, SIGCONT) < 0)
1208 return errno != ESRCH;
1213 static int write_pid(pid_t pid, const char *pidfile)
1217 fpid = fopen(pidfile, "w");
1219 log_err("fio: failed opening pid file %s\n", pidfile);
1223 fprintf(fpid, "%u\n", (unsigned int) pid);
1229 * If pidfile is specified, background us.
1231 int fio_start_server(char *pidfile)
1238 WSAStartup(MAKEWORD(2,2), &wsd);
1242 return fio_server();
1244 if (check_existing_pidfile(pidfile)) {
1245 log_err("fio: pidfile %s exists and server appears alive\n",
1252 log_err("fio: failed server fork: %s", strerror(errno));
1256 int ret = write_pid(pid, pidfile);
1262 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1264 close(STDIN_FILENO);
1265 close(STDOUT_FILENO);
1266 close(STDERR_FILENO);
1278 void fio_server_set_arg(const char *arg)
1280 fio_server_arg = strdup(arg);