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);
97 int fio_recv_data(int sk, void *p, unsigned int len)
100 int ret = recv(sk, p, len, MSG_WAITALL);
110 else if (errno == EAGAIN || errno == EINTR)
114 } while (!exit_backend);
122 static int verify_convert_cmd(struct fio_net_cmd *cmd)
126 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
127 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
129 crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
130 if (crc != cmd->cmd_crc16) {
131 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
132 cmd->cmd_crc16, crc);
136 cmd->version = le16_to_cpu(cmd->version);
137 cmd->opcode = le16_to_cpu(cmd->opcode);
138 cmd->flags = le32_to_cpu(cmd->flags);
139 cmd->tag = le64_to_cpu(cmd->tag);
140 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
142 switch (cmd->version) {
146 log_err("fio: bad server cmd version %d\n", cmd->version);
150 if (cmd->pdu_len > FIO_SERVER_MAX_FRAGMENT_PDU) {
151 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
159 * Read (and defragment, if necessary) incoming commands
161 struct fio_net_cmd *fio_net_recv_cmd(int sk)
163 struct fio_net_cmd cmd, *cmdret = NULL;
164 size_t cmd_size = 0, pdu_offset = 0;
170 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
174 /* We have a command, verify it and swap if need be */
175 ret = verify_convert_cmd(&cmd);
180 /* if this is text, add room for \0 at the end */
181 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
184 cmd_size += cmd.pdu_len;
186 cmdret = realloc(cmdret, cmd_size);
189 memcpy(cmdret, &cmd, sizeof(cmd));
190 else if (cmdret->opcode != cmd.opcode) {
191 log_err("fio: fragment opcode mismatch (%d != %d)\n",
192 cmdret->opcode, cmd.opcode);
200 /* There's payload, get it */
201 pdu = (void *) cmdret->payload + pdu_offset;
202 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
206 /* Verify payload crc */
207 crc = fio_crc16(pdu, cmd.pdu_len);
208 if (crc != cmd.pdu_crc16) {
209 log_err("fio: server bad crc on payload ");
210 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
215 pdu_offset += cmd.pdu_len;
217 cmdret->pdu_len += cmd.pdu_len;
219 } while (cmd.flags & FIO_NET_CMD_F_MORE);
225 /* zero-terminate text input */
226 if (cmdret->pdu_len) {
227 if (cmdret->opcode == FIO_NET_CMD_TEXT) {
228 struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmdret->payload;
229 char *buf = (char *) pdu->buf;
231 buf[pdu->buf_len ] = '\0';
232 } else if (cmdret->opcode == FIO_NET_CMD_JOB) {
233 char *buf = (char *) cmdret->payload;
235 buf[cmdret->pdu_len ] = '\0';
239 /* frag flag is internal */
240 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
246 void fio_net_cmd_crc(struct fio_net_cmd *cmd)
250 cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
252 pdu_len = le32_to_cpu(cmd->pdu_len);
254 cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(cmd->payload, pdu_len));
257 int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
260 struct fio_net_cmd *cmd = NULL;
261 size_t this_len, cur_len = 0;
266 if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU)
267 this_len = FIO_SERVER_MAX_FRAGMENT_PDU;
269 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
273 cur_len = sizeof(*cmd) + this_len;
274 cmd = malloc(cur_len);
277 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
280 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
282 fio_net_cmd_crc(cmd);
284 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
287 } while (!ret && size);
295 static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
297 struct fio_net_cmd cmd;
299 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
300 fio_net_cmd_crc(&cmd);
302 return fio_send_data(sk, &cmd, sizeof(cmd));
306 * If 'list' is non-NULL, then allocate and store the sent command for
307 * later verification.
309 int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
310 struct flist_head *list)
312 struct fio_net_int_cmd *cmd;
316 return fio_net_send_simple_stack_cmd(sk, opcode, tag);
318 cmd = malloc(sizeof(*cmd));
320 fio_init_net_cmd(&cmd->cmd, opcode, NULL, 0, (uintptr_t) cmd);
321 fio_net_cmd_crc(&cmd->cmd);
323 INIT_FLIST_HEAD(&cmd->list);
324 gettimeofday(&cmd->tv, NULL);
325 cmd->saved_tag = tag;
327 ret = fio_send_data(sk, &cmd->cmd, sizeof(cmd->cmd));
333 flist_add_tail(&cmd->list, list);
337 static int fio_server_send_quit_cmd(void)
339 dprint(FD_NET, "server: sending quit\n");
340 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0, NULL);
343 static int handle_run_cmd(struct fio_net_cmd *cmd)
345 struct cmd_end_pdu epdu;
351 fio_net_send_cmd(server_fd, FIO_NET_CMD_STOP, &epdu, sizeof(epdu), 0);
353 fio_server_send_quit_cmd();
359 static int handle_job_cmd(struct fio_net_cmd *cmd)
361 char *buf = (char *) cmd->payload;
362 struct cmd_start_pdu spdu;
364 if (parse_jobs_ini(buf, 1, 0)) {
365 fio_server_send_quit_cmd();
369 spdu.jobs = cpu_to_le32(thread_number);
370 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), 0);
374 static int handle_jobline_cmd(struct fio_net_cmd *cmd)
376 void *pdu = cmd->payload;
377 struct cmd_single_line_pdu *cslp;
378 struct cmd_line_pdu *clp;
379 unsigned long offset;
380 struct cmd_start_pdu spdu;
385 clp->lines = le16_to_cpu(clp->lines);
386 argv = malloc(clp->lines * sizeof(char *));
387 offset = sizeof(*clp);
389 dprint(FD_NET, "server: %d command line args\n", clp->lines);
391 for (i = 0; i < clp->lines; i++) {
393 argv[i] = (char *) cslp->text;
395 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
396 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
399 if (parse_cmd_line(clp->lines, argv)) {
400 fio_server_send_quit_cmd();
407 spdu.jobs = cpu_to_le32(thread_number);
408 fio_net_send_cmd(server_fd, FIO_NET_CMD_START, &spdu, sizeof(spdu), 0);
412 static int handle_probe_cmd(struct fio_net_cmd *cmd)
414 struct cmd_probe_pdu probe;
416 dprint(FD_NET, "server: sending probe reply\n");
418 memset(&probe, 0, sizeof(probe));
419 gethostname((char *) probe.hostname, sizeof(probe.hostname));
420 #ifdef FIO_BIG_ENDIAN
423 probe.fio_major = FIO_MAJOR;
424 probe.fio_minor = FIO_MINOR;
425 probe.fio_patch = FIO_PATCH;
428 probe.arch = FIO_ARCH;
430 probe.bpp = sizeof(void *);
432 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), cmd->tag);
435 static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
444 size = sizeof(*je) + thread_number * sizeof(char) + 1;
448 if (!calc_thread_status(je, 1)) {
453 dprint(FD_NET, "server sending status\n");
455 je->nr_running = cpu_to_le32(je->nr_running);
456 je->nr_ramp = cpu_to_le32(je->nr_ramp);
457 je->nr_pending = cpu_to_le32(je->nr_pending);
458 je->files_open = cpu_to_le32(je->files_open);
460 for (i = 0; i < 2; i++) {
461 je->m_rate[i] = cpu_to_le32(je->m_rate[i]);
462 je->t_rate[i] = cpu_to_le32(je->t_rate[i]);
463 je->m_iops[i] = cpu_to_le32(je->m_iops[i]);
464 je->t_iops[i] = cpu_to_le32(je->t_iops[i]);
465 je->rate[i] = cpu_to_le32(je->rate[i]);
466 je->iops[i] = cpu_to_le32(je->iops[i]);
469 je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
470 je->eta_sec = cpu_to_le64(je->eta_sec);
471 je->nr_threads = cpu_to_le32(je->nr_threads);
473 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, cmd->tag);
478 static int handle_command(struct fio_net_cmd *cmd)
482 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%lx\n",
483 fio_server_op(cmd->opcode), cmd->pdu_len, cmd->tag);
485 switch (cmd->opcode) {
486 case FIO_NET_CMD_QUIT:
487 fio_terminate_threads(TERMINATE_ALL);
489 case FIO_NET_CMD_EXIT:
492 case FIO_NET_CMD_JOB:
493 ret = handle_job_cmd(cmd);
495 case FIO_NET_CMD_JOBLINE:
496 ret = handle_jobline_cmd(cmd);
498 case FIO_NET_CMD_PROBE:
499 ret = handle_probe_cmd(cmd);
501 case FIO_NET_CMD_SEND_ETA:
502 ret = handle_send_eta_cmd(cmd);
504 case FIO_NET_CMD_RUN:
505 ret = handle_run_cmd(cmd);
508 log_err("fio: unknown opcode: %s\n",fio_server_op(cmd->opcode));
515 static int handle_connection(int sk, int block)
517 struct fio_net_cmd *cmd = NULL;
521 while (!exit_backend) {
522 struct pollfd pfd = {
529 ret = poll(&pfd, 1, 100);
533 log_err("fio: poll: %s\n", strerror(errno));
541 if (pfd.revents & POLLIN)
543 if (pfd.revents & (POLLERR|POLLHUP)) {
547 } while (!exit_backend);
552 cmd = fio_net_recv_cmd(sk);
558 ret = handle_command(cmd);
572 void fio_server_idle_loop(void)
574 if (!first_cmd_check) {
575 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_SERVER_START, 0, NULL);
579 handle_connection(server_fd, 0);
582 static int accept_loop(int listen_sk)
584 struct sockaddr_in addr;
585 fio_socklen_t len = sizeof(addr);
587 int ret, sk, flags, exitval = 0;
589 dprint(FD_NET, "server enter accept loop\n");
591 flags = fcntl(listen_sk, F_GETFL);
593 fcntl(listen_sk, F_SETFL, flags);
598 ret = poll(&pfd, 1, 100);
602 log_err("fio: poll: %s\n", strerror(errno));
607 if (pfd.revents & POLLIN)
609 } while (!exit_backend);
614 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
616 log_err("fio: accept: %s\n", strerror(errno));
620 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
624 exitval = handle_connection(sk, 1);
636 int fio_server_text_output(int level, const char *buf, size_t len)
638 struct cmd_text_pdu *pdu;
643 return log_local_buf(buf, len);
645 tlen = sizeof(*pdu) + len;
648 pdu->level = __cpu_to_le32(level);
649 pdu->buf_len = __cpu_to_le32(len);
651 gettimeofday(&tv, NULL);
652 pdu->log_sec = __cpu_to_le64(tv.tv_sec);
653 pdu->log_usec = __cpu_to_le64(tv.tv_usec);
655 memcpy(pdu->buf, buf, len);
657 fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, pdu, tlen, 0);
662 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
664 dst->max_val = cpu_to_le64(src->max_val);
665 dst->min_val = cpu_to_le64(src->min_val);
666 dst->samples = cpu_to_le64(src->samples);
669 * Encode to IEEE 754 for network transfer
671 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
672 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
675 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
679 for (i = 0; i < 2; i++) {
680 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
681 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
682 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
683 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
684 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
685 dst->agg[i] = cpu_to_le64(src->agg[i]);
688 dst->kb_base = cpu_to_le32(src->kb_base);
689 dst->groupid = cpu_to_le32(src->groupid);
693 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
694 * into a single payload.
696 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
701 dprint(FD_NET, "server sending end stats\n");
703 memset(&p, 0, sizeof(p));
705 strcpy(p.ts.name, ts->name);
706 strcpy(p.ts.verror, ts->verror);
707 strcpy(p.ts.description, ts->description);
709 p.ts.error = cpu_to_le32(ts->error);
710 p.ts.groupid = cpu_to_le32(ts->groupid);
711 p.ts.pid = cpu_to_le32(ts->pid);
712 p.ts.members = cpu_to_le32(ts->members);
714 for (i = 0; i < 2; i++) {
715 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
716 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
717 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
718 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
721 p.ts.usr_time = cpu_to_le64(ts->usr_time);
722 p.ts.sys_time = cpu_to_le64(ts->sys_time);
723 p.ts.ctx = cpu_to_le64(ts->ctx);
724 p.ts.minf = cpu_to_le64(ts->minf);
725 p.ts.majf = cpu_to_le64(ts->majf);
726 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
728 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
729 fio_fp64_t *src = &ts->percentile_list[i];
730 fio_fp64_t *dst = &p.ts.percentile_list[i];
732 dst->u.i = __cpu_to_le64(fio_double_to_uint64(src->u.f));
735 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
736 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
737 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
738 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
741 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
742 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
743 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
746 for (i = 0; i < 2; i++)
747 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
748 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
750 for (i = 0; i < 3; i++) {
751 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
752 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
755 p.ts.total_submit = cpu_to_le64(ts->total_submit);
756 p.ts.total_complete = cpu_to_le64(ts->total_complete);
758 for (i = 0; i < 2; i++) {
759 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
760 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
763 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
764 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
765 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
766 p.ts.first_error = cpu_to_le32(ts->first_error);
767 p.ts.kb_base = cpu_to_le32(ts->kb_base);
769 convert_gs(&p.rs, rs);
771 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0);
774 void fio_server_send_gs(struct group_run_stats *rs)
776 struct group_run_stats gs;
778 dprint(FD_NET, "server sending group run stats\n");
781 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0);
784 static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
788 for (i = 0; i < 2; i++) {
789 dst->ios[i] = cpu_to_le32(src->ios[i]);
790 dst->merges[i] = cpu_to_le32(src->merges[i]);
791 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
792 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
795 dst->io_ticks = cpu_to_le32(src->io_ticks);
796 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
797 dst->slavecount = cpu_to_le32(src->slavecount);
798 dst->max_util.u.i = __cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
801 static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
805 strcpy((char *) dst->name, (char *) src->name);
807 for (i = 0; i < 2; i++) {
808 dst->ios[i] = cpu_to_le32(src->ios[i]);
809 dst->merges[i] = cpu_to_le32(src->merges[i]);
810 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
811 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
814 dst->io_ticks = cpu_to_le32(src->io_ticks);
815 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
816 dst->msec = cpu_to_le64(src->msec);
819 void fio_server_send_du(void)
821 struct disk_util *du;
822 struct flist_head *entry;
823 struct cmd_du_pdu pdu;
825 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
827 memset(&pdu, 0, sizeof(pdu));
829 flist_for_each(entry, &disk_list) {
830 du = flist_entry(entry, struct disk_util, list);
832 convert_dus(&pdu.dus, &du->dus);
833 convert_agg(&pdu.agg, &du->agg);
835 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), 0);
839 void fio_server_send_add_job(struct thread_options *o, const char *ioengine)
841 struct cmd_add_job_pdu pdu;
843 convert_thread_options_to_net(&pdu.top, o);
845 fio_net_send_cmd(server_fd, FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), 0);
848 static int fio_init_server_ip(void)
850 struct sockaddr *addr;
851 fio_socklen_t socklen;
855 sk = socket(AF_INET6, SOCK_STREAM, 0);
857 sk = socket(AF_INET, SOCK_STREAM, 0);
860 log_err("fio: socket: %s\n", strerror(errno));
865 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
866 log_err("fio: setsockopt: %s\n", strerror(errno));
871 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
872 log_err("fio: setsockopt: %s\n", strerror(errno));
879 addr = (struct sockaddr *) &saddr_in6;
880 socklen = sizeof(saddr_in6);
881 saddr_in6.sin6_family = AF_INET6;
883 addr = (struct sockaddr *) &saddr_in;
884 socklen = sizeof(saddr_in);
885 saddr_in.sin_family = AF_INET;
888 if (bind(sk, addr, socklen) < 0) {
889 log_err("fio: bind: %s\n", strerror(errno));
897 static int fio_init_server_sock(void)
899 struct sockaddr_un addr;
904 sk = socket(AF_UNIX, SOCK_STREAM, 0);
906 log_err("fio: socket: %s\n", strerror(errno));
912 memset(&addr, 0, sizeof(addr));
913 addr.sun_family = AF_UNIX;
914 strcpy(addr.sun_path, bind_sock);
917 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
919 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
920 log_err("fio: bind: %s\n", strerror(errno));
929 static int fio_init_server_connection(void)
934 dprint(FD_NET, "starting server\n");
937 sk = fio_init_server_ip();
939 sk = fio_init_server_sock();
951 src = &saddr_in6.sin6_addr;
954 src = &saddr_in.sin_addr;
957 p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
959 sprintf(port, ",%u", fio_net_port);
963 strcpy(bind_str, port);
965 strcpy(bind_str, bind_sock);
967 log_info("fio: server listening on %s\n", bind_str);
969 if (listen(sk, 0) < 0) {
970 log_err("fio: listen: %s\n", strerror(errno));
977 int fio_server_parse_host(const char *host, int *ipv6, struct in_addr *inp,
978 struct in6_addr *inp6)
984 ret = inet_pton(AF_INET6, host, inp6);
986 ret = inet_pton(AF_INET, host, inp);
989 struct hostent *hent;
991 hent = gethostbyname(host);
993 log_err("fio: failed to resolve <%s>\n", host);
998 if (hent->h_addrtype != AF_INET6) {
999 log_info("fio: falling back to IPv4\n");
1002 memcpy(inp6, hent->h_addr_list[0], 16);
1005 if (hent->h_addrtype != AF_INET) {
1006 log_err("fio: lookup type mismatch\n");
1009 memcpy(inp, hent->h_addr_list[0], 4);
1018 * Parse a host/ip/port string. Reads from 'str'.
1023 * *ptr is the host, *port is the port, inp is the destination.
1025 * *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
1026 * For local domain sockets:
1027 * *ptr is the filename, *is_sock is 1.
1029 int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
1030 int *port, struct in_addr *inp,
1031 struct in6_addr *inp6, int *ipv6)
1033 const char *host = str;
1039 *port = fio_net_port;
1042 if (!strncmp(str, "sock:", 5)) {
1043 *ptr = strdup(str + 5);
1050 * Is it ip:<ip or host>:port
1052 if (!strncmp(host, "ip:", 3))
1054 else if (!strncmp(host, "ip4:", 4))
1056 else if (!strncmp(host, "ip6:", 4)) {
1059 } else if (host[0] == ':') {
1060 /* String is :port */
1063 if (!lport || lport > 65535) {
1064 log_err("fio: bad server port %u\n", port);
1067 /* no hostname given, we are done */
1073 * If no port seen yet, check if there's a last ':' at the end
1076 portp = strchr(host, ',');
1080 lport = atoi(portp);
1081 if (!lport || lport > 65535) {
1082 log_err("fio: bad server port %u\n", port);
1094 *ptr = strdup(host);
1096 if (fio_server_parse_host(*ptr, ipv6, inp, inp6)) {
1103 *port = fio_net_port;
1109 * Server arg should be one of:
1111 * sock:/path/to/socket
1115 * Where sock uses unix domain sockets, and ip binds the server to
1116 * a specific interface. If no arguments are given to the server, it
1117 * uses IP and binds to 0.0.0.0.
1120 static int fio_handle_server_arg(void)
1122 int port = fio_net_port;
1123 int is_sock, ret = 0;
1125 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
1127 if (!fio_server_arg)
1130 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
1131 &port, &saddr_in.sin_addr,
1132 &saddr_in6.sin6_addr, &use_ipv6);
1134 if (!is_sock && bind_sock) {
1140 fio_net_port = port;
1141 saddr_in.sin_port = htons(port);
1142 saddr_in6.sin6_port = htons(port);
1146 static int fio_server(void)
1150 dprint(FD_NET, "starting server\n");
1152 if (fio_handle_server_arg())
1155 sk = fio_init_server_connection();
1159 ret = accept_loop(sk);
1163 if (fio_server_arg) {
1164 free(fio_server_arg);
1165 fio_server_arg = NULL;
1173 void fio_server_got_signal(int signal)
1175 if (signal == SIGPIPE)
1178 log_info("\nfio: terminating on signal %d\n", signal);
1183 static int check_existing_pidfile(const char *pidfile)
1190 if (stat(pidfile, &sb))
1193 f = fopen(pidfile, "r");
1197 if (fread(buf, sb.st_size, 1, f) <= 0) {
1204 if (kill(pid, SIGCONT) < 0)
1205 return errno != ESRCH;
1210 static int write_pid(pid_t pid, const char *pidfile)
1214 fpid = fopen(pidfile, "w");
1216 log_err("fio: failed opening pid file %s\n", pidfile);
1220 fprintf(fpid, "%u\n", (unsigned int) pid);
1226 * If pidfile is specified, background us.
1228 int fio_start_server(char *pidfile)
1235 WSAStartup(MAKEWORD(2,2), &wsd);
1239 return fio_server();
1241 if (check_existing_pidfile(pidfile)) {
1242 log_err("fio: pidfile %s exists and server appears alive\n",
1249 log_err("fio: failed server fork: %s", strerror(errno));
1253 int ret = write_pid(pid, pidfile);
1259 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1261 close(STDIN_FILENO);
1262 close(STDOUT_FILENO);
1263 close(STDERR_FILENO);
1275 void fio_server_set_arg(const char *arg)
1277 fio_server_arg = strdup(arg);