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 = 8765;
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 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 = 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));
187 assert(cmdret->opcode == cmd.opcode);
192 /* There's payload, get it */
193 pdu = (void *) cmdret->payload + pdu_offset;
194 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
198 /* Verify payload crc */
199 crc = crc16(pdu, cmd.pdu_len);
200 if (crc != cmd.pdu_crc16) {
201 log_err("fio: server bad crc on payload ");
202 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
207 pdu_offset += cmd.pdu_len;
209 cmdret->pdu_len += cmd.pdu_len;
211 } while (cmd.flags & FIO_NET_CMD_F_MORE);
217 /* zero-terminate text input */
218 if (cmdret->pdu_len && (cmdret->opcode == FIO_NET_CMD_TEXT ||
219 cmdret->opcode == FIO_NET_CMD_JOB)) {
220 char *buf = (char *) cmdret->payload;
222 buf[cmdret->pdu_len ] = '\0';
224 /* frag flag is internal */
225 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
231 void fio_net_cmd_crc(struct fio_net_cmd *cmd)
235 cmd->cmd_crc16 = __cpu_to_le16(crc16(cmd, FIO_NET_CMD_CRC_SZ));
237 pdu_len = le32_to_cpu(cmd->pdu_len);
239 cmd->pdu_crc16 = __cpu_to_le16(crc16(cmd->payload, pdu_len));
242 int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
245 struct fio_net_cmd *cmd = NULL;
246 size_t this_len, cur_len = 0;
251 if (this_len > FIO_SERVER_MAX_PDU)
252 this_len = FIO_SERVER_MAX_PDU;
254 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
258 cur_len = sizeof(*cmd) + this_len;
259 cmd = malloc(cur_len);
262 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
265 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
267 fio_net_cmd_crc(cmd);
269 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
272 } while (!ret && size);
280 static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
282 struct fio_net_cmd cmd;
284 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
285 fio_net_cmd_crc(&cmd);
287 return fio_send_data(sk, &cmd, sizeof(cmd));
291 * If 'list' is non-NULL, then allocate and store the sent command for
292 * later verification.
294 int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
295 struct flist_head *list)
297 struct fio_net_int_cmd *cmd;
301 return fio_net_send_simple_stack_cmd(sk, opcode, tag);
303 cmd = malloc(sizeof(*cmd));
305 fio_init_net_cmd(&cmd->cmd, opcode, NULL, 0, (uintptr_t) cmd);
306 fio_net_cmd_crc(&cmd->cmd);
308 INIT_FLIST_HEAD(&cmd->list);
309 gettimeofday(&cmd->tv, NULL);
310 cmd->saved_tag = tag;
312 ret = fio_send_data(sk, &cmd->cmd, sizeof(cmd->cmd));
318 flist_add_tail(&cmd->list, list);
322 static int fio_server_send_quit_cmd(void)
324 dprint(FD_NET, "server: sending quit\n");
325 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0, NULL);
328 static int handle_job_cmd(struct fio_net_cmd *cmd)
330 char *buf = (char *) cmd->payload;
333 if (parse_jobs_ini(buf, 1, 0)) {
334 fio_server_send_quit_cmd();
338 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0, NULL);
341 fio_server_send_quit_cmd();
346 static int handle_jobline_cmd(struct fio_net_cmd *cmd)
348 void *pdu = cmd->payload;
349 struct cmd_single_line_pdu *cslp;
350 struct cmd_line_pdu *clp;
351 unsigned long offset;
356 clp->lines = le16_to_cpu(clp->lines);
357 argv = malloc(clp->lines * sizeof(char *));
358 offset = sizeof(*clp);
360 dprint(FD_NET, "server: %d command line args\n", clp->lines);
362 for (i = 0; i < clp->lines; i++) {
364 argv[i] = (char *) cslp->text;
366 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
367 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
370 if (parse_cmd_line(clp->lines, argv)) {
371 fio_server_send_quit_cmd();
378 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0, NULL);
381 fio_server_send_quit_cmd();
386 static int handle_probe_cmd(struct fio_net_cmd *cmd)
388 struct cmd_probe_pdu probe;
390 dprint(FD_NET, "server: sending probe reply\n");
392 memset(&probe, 0, sizeof(probe));
393 gethostname((char *) probe.hostname, sizeof(probe.hostname));
394 #ifdef FIO_BIG_ENDIAN
397 probe.fio_major = FIO_MAJOR;
398 probe.fio_minor = FIO_MINOR;
399 probe.fio_patch = FIO_PATCH;
402 probe.arch = FIO_ARCH;
404 probe.bpp = sizeof(void *);
406 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), cmd->tag);
409 static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
418 size = sizeof(*je) + thread_number * sizeof(char) + 1;
422 if (!calc_thread_status(je, 1)) {
427 dprint(FD_NET, "server sending status\n");
429 je->nr_running = cpu_to_le32(je->nr_running);
430 je->nr_ramp = cpu_to_le32(je->nr_ramp);
431 je->nr_pending = cpu_to_le32(je->nr_pending);
432 je->files_open = cpu_to_le32(je->files_open);
433 je->m_rate = cpu_to_le32(je->m_rate);
434 je->t_rate = cpu_to_le32(je->t_rate);
435 je->m_iops = cpu_to_le32(je->m_iops);
436 je->t_iops = cpu_to_le32(je->t_iops);
438 for (i = 0; i < 2; i++) {
439 je->rate[i] = cpu_to_le32(je->rate[i]);
440 je->iops[i] = cpu_to_le32(je->iops[i]);
443 je->elapsed_sec = cpu_to_le32(je->nr_running);
444 je->eta_sec = cpu_to_le64(je->eta_sec);
446 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, cmd->tag);
451 static int handle_command(struct fio_net_cmd *cmd)
455 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%lx\n",
456 fio_server_op(cmd->opcode), cmd->pdu_len, cmd->tag);
458 switch (cmd->opcode) {
459 case FIO_NET_CMD_QUIT:
460 fio_terminate_threads(TERMINATE_ALL);
462 case FIO_NET_CMD_EXIT:
465 case FIO_NET_CMD_JOB:
466 ret = handle_job_cmd(cmd);
468 case FIO_NET_CMD_JOBLINE:
469 ret = handle_jobline_cmd(cmd);
471 case FIO_NET_CMD_PROBE:
472 ret = handle_probe_cmd(cmd);
474 case FIO_NET_CMD_SEND_ETA:
475 ret = handle_send_eta_cmd(cmd);
478 log_err("fio: unknown opcode: %s\n",fio_server_op(cmd->opcode));
485 static int handle_connection(int sk, int block)
487 struct fio_net_cmd *cmd = NULL;
491 while (!exit_backend) {
492 struct pollfd pfd = {
499 ret = poll(&pfd, 1, 100);
503 log_err("fio: poll: %s\n", strerror(errno));
511 if (pfd.revents & POLLIN)
513 if (pfd.revents & (POLLERR|POLLHUP)) {
517 } while (!exit_backend);
522 cmd = fio_net_recv_cmd(sk);
528 ret = handle_command(cmd);
542 void fio_server_idle_loop(void)
544 if (!first_cmd_check)
545 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_RUN, 0, NULL);
547 handle_connection(server_fd, 0);
550 static int accept_loop(int listen_sk)
552 struct sockaddr_in addr;
553 fio_socklen_t len = sizeof(addr);
555 int ret, sk, flags, exitval = 0;
557 dprint(FD_NET, "server enter accept loop\n");
559 flags = fcntl(listen_sk, F_GETFL);
561 fcntl(listen_sk, F_SETFL, flags);
566 ret = poll(&pfd, 1, 100);
570 log_err("fio: poll: %s\n", strerror(errno));
575 if (pfd.revents & POLLIN)
577 } while (!exit_backend);
582 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
584 log_err("fio: accept: %s\n", strerror(errno));
588 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
592 exitval = handle_connection(sk, 1);
604 int fio_server_text_output(const char *buf, size_t len)
607 return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len, 0);
609 return log_local_buf(buf, len);
612 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
614 dst->max_val = cpu_to_le64(src->max_val);
615 dst->min_val = cpu_to_le64(src->min_val);
616 dst->samples = cpu_to_le64(src->samples);
619 * Encode to IEEE 754 for network transfer
621 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
622 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
625 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
629 for (i = 0; i < 2; i++) {
630 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
631 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
632 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
633 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
634 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
635 dst->agg[i] = cpu_to_le64(src->agg[i]);
638 dst->kb_base = cpu_to_le32(src->kb_base);
639 dst->groupid = cpu_to_le32(src->groupid);
643 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
644 * into a single payload.
646 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
651 dprint(FD_NET, "server sending end stats\n");
653 memset(&p, 0, sizeof(p));
655 strcpy(p.ts.name, ts->name);
656 strcpy(p.ts.verror, ts->verror);
657 strcpy(p.ts.description, ts->description);
659 p.ts.error = cpu_to_le32(ts->error);
660 p.ts.groupid = cpu_to_le32(ts->groupid);
661 p.ts.pid = cpu_to_le32(ts->pid);
662 p.ts.members = cpu_to_le32(ts->members);
664 for (i = 0; i < 2; i++) {
665 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
666 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
667 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
668 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
671 p.ts.usr_time = cpu_to_le64(ts->usr_time);
672 p.ts.sys_time = cpu_to_le64(ts->sys_time);
673 p.ts.ctx = cpu_to_le64(ts->ctx);
674 p.ts.minf = cpu_to_le64(ts->minf);
675 p.ts.majf = cpu_to_le64(ts->majf);
676 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
678 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
679 fio_fp64_t *src = &ts->percentile_list[i];
680 fio_fp64_t *dst = &p.ts.percentile_list[i];
682 dst->u.i = __cpu_to_le64(fio_double_to_uint64(src->u.f));
685 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
686 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
687 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
688 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
691 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
692 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
693 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
696 for (i = 0; i < 2; i++)
697 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
698 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
700 for (i = 0; i < 3; i++) {
701 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
702 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
705 p.ts.total_submit = cpu_to_le64(ts->total_submit);
706 p.ts.total_complete = cpu_to_le64(ts->total_complete);
708 for (i = 0; i < 2; i++) {
709 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
710 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
713 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
714 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
715 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
716 p.ts.first_error = cpu_to_le32(ts->first_error);
717 p.ts.kb_base = cpu_to_le32(ts->kb_base);
719 convert_gs(&p.rs, rs);
721 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0);
724 void fio_server_send_gs(struct group_run_stats *rs)
726 struct group_run_stats gs;
728 dprint(FD_NET, "server sending group run stats\n");
731 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0);
734 static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
738 for (i = 0; i < 2; i++) {
739 dst->ios[i] = cpu_to_le32(src->ios[i]);
740 dst->merges[i] = cpu_to_le32(src->merges[i]);
741 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
742 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
745 dst->io_ticks = cpu_to_le32(src->io_ticks);
746 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
747 dst->slavecount = cpu_to_le32(src->slavecount);
748 dst->max_util.u.i = __cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
751 static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
755 strcpy((char *) dst->name, (char *) src->name);
757 for (i = 0; i < 2; i++) {
758 dst->ios[i] = cpu_to_le32(src->ios[i]);
759 dst->merges[i] = cpu_to_le32(src->merges[i]);
760 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
761 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
764 dst->io_ticks = cpu_to_le32(src->io_ticks);
765 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
766 dst->msec = cpu_to_le64(src->msec);
769 void fio_server_send_du(void)
771 struct disk_util *du;
772 struct flist_head *entry;
773 struct cmd_du_pdu pdu;
775 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
777 memset(&pdu, 0, sizeof(pdu));
779 flist_for_each(entry, &disk_list) {
780 du = flist_entry(entry, struct disk_util, list);
782 convert_dus(&pdu.dus, &du->dus);
783 convert_agg(&pdu.agg, &du->agg);
785 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), 0);
789 int fio_server_log(const char *format, ...)
795 dprint(FD_NET, "server log\n");
797 va_start(args, format);
798 len = vsnprintf(buffer, sizeof(buffer), format, args);
801 return fio_server_text_output(buffer, len);
804 static int fio_init_server_ip(void)
808 sk = socket(AF_INET, SOCK_STREAM, 0);
810 log_err("fio: socket: %s\n", strerror(errno));
815 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
816 log_err("fio: setsockopt: %s\n", strerror(errno));
821 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
822 log_err("fio: setsockopt: %s\n", strerror(errno));
828 saddr_in.sin_family = AF_INET;
830 if (bind(sk, (struct sockaddr *) &saddr_in, sizeof(saddr_in)) < 0) {
831 log_err("fio: bind: %s\n", strerror(errno));
839 static int fio_init_server_sock(void)
841 struct sockaddr_un addr;
846 sk = socket(AF_UNIX, SOCK_STREAM, 0);
848 log_err("fio: socket: %s\n", strerror(errno));
854 memset(&addr, 0, sizeof(addr));
855 addr.sun_family = AF_UNIX;
856 strcpy(addr.sun_path, bind_sock);
859 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
861 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
862 log_err("fio: bind: %s\n", strerror(errno));
871 static int fio_init_server_connection(void)
876 dprint(FD_NET, "starting server\n");
879 sk = fio_init_server_ip();
881 sk = fio_init_server_sock();
887 sprintf(bind_str, "%s:%u", inet_ntoa(saddr_in.sin_addr), fio_net_port);
889 strcpy(bind_str, bind_sock);
891 log_info("fio: server listening on %s\n", bind_str);
893 if (listen(sk, 0) < 0) {
894 log_err("fio: listen: %s\n", strerror(errno));
901 int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
902 int *port, struct in_addr *inp)
906 *port = fio_net_port;
908 if (!strncmp(str, "sock:", 5)) {
909 *ptr = strdup(str + 5);
912 const char *host = str;
917 * Is it ip:<ip or host>:port
919 if (!strncmp(host, "ip:", 3))
921 else if (host[0] == ':') {
922 /* String is :port */
925 if (!lport || lport > 65535) {
926 log_err("fio: bad server port %u\n", port);
929 /* no hostname given, we are done */
935 * If no port seen yet, check if there's a last ':' at the end
938 portp = strchr(host, ':');
943 if (!lport || lport > 65535) {
944 log_err("fio: bad server port %u\n", port);
955 if (inet_aton(host, inp) != 1) {
956 struct hostent *hent;
958 hent = gethostbyname(host);
965 memcpy(inp, hent->h_addr, 4);
970 *port = fio_net_port;
976 * Server arg should be one of:
978 * sock:/path/to/socket
982 * Where sock uses unix domain sockets, and ip binds the server to
983 * a specific interface. If no arguments are given to the server, it
984 * uses IP and binds to 0.0.0.0.
987 static int fio_handle_server_arg(void)
989 int port = fio_net_port;
990 int is_sock, ret = 0;
992 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
997 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
998 &port, &saddr_in.sin_addr);
1000 if (!is_sock && bind_sock) {
1006 fio_net_port = port;
1007 saddr_in.sin_port = htons(port);
1011 static int fio_server(void)
1015 dprint(FD_NET, "starting server\n");
1017 if (fio_handle_server_arg())
1020 sk = fio_init_server_connection();
1024 ret = accept_loop(sk);
1028 if (fio_server_arg) {
1029 free(fio_server_arg);
1030 fio_server_arg = NULL;
1038 void fio_server_got_signal(int signal)
1040 if (signal == SIGPIPE)
1043 log_info("\nfio: terminating on signal %d\n", signal);
1048 static int check_existing_pidfile(const char *pidfile)
1055 if (stat(pidfile, &sb))
1058 f = fopen(pidfile, "r");
1062 if (fread(buf, sb.st_size, 1, f) <= 0) {
1069 if (kill(pid, SIGCONT) < 0)
1070 return errno != ESRCH;
1075 static int write_pid(pid_t pid, const char *pidfile)
1079 fpid = fopen(pidfile, "w");
1081 log_err("fio: failed opening pid file %s\n", pidfile);
1085 fprintf(fpid, "%u\n", (unsigned int) pid);
1091 * If pidfile is specified, background us.
1093 int fio_start_server(char *pidfile)
1099 return fio_server();
1101 if (check_existing_pidfile(pidfile)) {
1102 log_err("fio: pidfile %s exists and server appears alive\n",
1109 log_err("fio: failed server fork: %s", strerror(errno));
1113 int ret = write_pid(pid, pidfile);
1119 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1121 close(STDIN_FILENO);
1122 close(STDOUT_FILENO);
1123 close(STDERR_FILENO);
1135 void fio_server_set_arg(const char *arg)
1137 fio_server_arg = strdup(arg);