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;
36 static const char *fio_server_ops[FIO_NET_CMD_NR] = {
53 const char *fio_server_op(unsigned int op)
57 if (op < FIO_NET_CMD_NR)
58 return fio_server_ops[op];
60 sprintf(buf, "UNKNOWN/%d", op);
64 int fio_send_data(int sk, const void *p, unsigned int len)
66 assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_PDU);
69 int ret = send(sk, p, len, 0);
79 else if (errno == EAGAIN || errno == EINTR)
83 } while (!exit_backend);
91 int fio_recv_data(int sk, void *p, unsigned int len)
94 int ret = recv(sk, p, len, MSG_WAITALL);
104 else if (errno == EAGAIN || errno == EINTR)
108 } while (!exit_backend);
116 static int verify_convert_cmd(struct fio_net_cmd *cmd)
120 cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
121 cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
123 crc = crc16(cmd, FIO_NET_CMD_CRC_SZ);
124 if (crc != cmd->cmd_crc16) {
125 log_err("fio: server bad crc on command (got %x, wanted %x)\n",
126 cmd->cmd_crc16, crc);
130 cmd->version = le16_to_cpu(cmd->version);
131 cmd->opcode = le16_to_cpu(cmd->opcode);
132 cmd->flags = le32_to_cpu(cmd->flags);
133 cmd->tag = le64_to_cpu(cmd->tag);
134 cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
136 switch (cmd->version) {
140 log_err("fio: bad server cmd version %d\n", cmd->version);
144 if (cmd->pdu_len > FIO_SERVER_MAX_PDU) {
145 log_err("fio: command payload too large: %u\n", cmd->pdu_len);
153 * Read (and defragment, if necessary) incoming commands
155 struct fio_net_cmd *fio_net_recv_cmd(int sk)
157 struct fio_net_cmd cmd, *cmdret = NULL;
158 size_t cmd_size = 0, pdu_offset = 0;
164 ret = fio_recv_data(sk, &cmd, sizeof(cmd));
168 /* We have a command, verify it and swap if need be */
169 ret = verify_convert_cmd(&cmd);
174 /* if this is text, add room for \0 at the end */
175 cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
178 cmd_size += cmd.pdu_len;
180 cmdret = realloc(cmdret, cmd_size);
183 memcpy(cmdret, &cmd, sizeof(cmd));
185 assert(cmdret->opcode == cmd.opcode);
190 /* There's payload, get it */
191 pdu = (void *) cmdret->payload + pdu_offset;
192 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
196 /* Verify payload crc */
197 crc = crc16(pdu, cmd.pdu_len);
198 if (crc != cmd.pdu_crc16) {
199 log_err("fio: server bad crc on payload ");
200 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
205 pdu_offset += cmd.pdu_len;
207 cmdret->pdu_len += cmd.pdu_len;
209 } while (cmd.flags & FIO_NET_CMD_F_MORE);
215 /* zero-terminate text input */
216 if (cmdret->pdu_len && (cmdret->opcode == FIO_NET_CMD_TEXT ||
217 cmdret->opcode == FIO_NET_CMD_JOB)) {
218 char *buf = (char *) cmdret->payload;
220 buf[cmdret->pdu_len ] = '\0';
222 /* frag flag is internal */
223 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
229 void fio_net_cmd_crc(struct fio_net_cmd *cmd)
233 cmd->cmd_crc16 = __cpu_to_le16(crc16(cmd, FIO_NET_CMD_CRC_SZ));
235 pdu_len = le32_to_cpu(cmd->pdu_len);
237 cmd->pdu_crc16 = __cpu_to_le16(crc16(cmd->payload, pdu_len));
240 int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
243 struct fio_net_cmd *cmd = NULL;
244 size_t this_len, cur_len = 0;
249 if (this_len > FIO_SERVER_MAX_PDU)
250 this_len = FIO_SERVER_MAX_PDU;
252 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
256 cur_len = sizeof(*cmd) + this_len;
257 cmd = malloc(cur_len);
260 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
263 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
265 fio_net_cmd_crc(cmd);
267 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
270 } while (!ret && size);
278 static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
280 struct fio_net_cmd cmd;
282 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
283 fio_net_cmd_crc(&cmd);
285 return fio_send_data(sk, &cmd, sizeof(cmd));
289 * If 'list' is non-NULL, then allocate and store the sent command for
290 * later verification.
292 int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
293 struct flist_head *list)
295 struct fio_net_int_cmd *cmd;
299 return fio_net_send_simple_stack_cmd(sk, opcode, tag);
301 cmd = malloc(sizeof(*cmd));
303 fio_init_net_cmd(&cmd->cmd, opcode, NULL, 0, (uintptr_t) cmd);
304 fio_net_cmd_crc(&cmd->cmd);
306 INIT_FLIST_HEAD(&cmd->list);
307 gettimeofday(&cmd->tv, NULL);
308 cmd->saved_tag = tag;
310 ret = fio_send_data(sk, &cmd->cmd, sizeof(cmd->cmd));
316 flist_add_tail(&cmd->list, list);
320 static int fio_server_send_quit_cmd(void)
322 dprint(FD_NET, "server: sending quit\n");
323 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0, NULL);
326 static int handle_job_cmd(struct fio_net_cmd *cmd)
328 char *buf = (char *) cmd->payload;
331 if (parse_jobs_ini(buf, 1, 0)) {
332 fio_server_send_quit_cmd();
336 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0, NULL);
339 fio_server_send_quit_cmd();
344 static int handle_jobline_cmd(struct fio_net_cmd *cmd)
346 void *pdu = cmd->payload;
347 struct cmd_single_line_pdu *cslp;
348 struct cmd_line_pdu *clp;
349 unsigned long offset;
354 clp->lines = le16_to_cpu(clp->lines);
355 argv = malloc(clp->lines * sizeof(char *));
356 offset = sizeof(*clp);
358 dprint(FD_NET, "server: %d command line args\n", clp->lines);
360 for (i = 0; i < clp->lines; i++) {
362 argv[i] = (char *) cslp->text;
364 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
365 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
368 if (parse_cmd_line(clp->lines, argv)) {
369 fio_server_send_quit_cmd();
376 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0, NULL);
379 fio_server_send_quit_cmd();
384 static int handle_probe_cmd(struct fio_net_cmd *cmd)
386 struct cmd_probe_pdu probe;
388 dprint(FD_NET, "server: sending probe reply\n");
390 memset(&probe, 0, sizeof(probe));
391 gethostname((char *) probe.hostname, sizeof(probe.hostname));
392 #ifdef FIO_BIG_ENDIAN
395 probe.fio_major = FIO_MAJOR;
396 probe.fio_minor = FIO_MINOR;
397 probe.fio_patch = FIO_PATCH;
400 probe.arch = FIO_ARCH;
402 probe.bpp = sizeof(void *);
404 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), cmd->tag);
407 static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
416 size = sizeof(*je) + thread_number * sizeof(char) + 1;
420 if (!calc_thread_status(je, 1)) {
425 dprint(FD_NET, "server sending status\n");
427 je->nr_running = cpu_to_le32(je->nr_running);
428 je->nr_ramp = cpu_to_le32(je->nr_ramp);
429 je->nr_pending = cpu_to_le32(je->nr_pending);
430 je->files_open = cpu_to_le32(je->files_open);
431 je->m_rate = cpu_to_le32(je->m_rate);
432 je->t_rate = cpu_to_le32(je->t_rate);
433 je->m_iops = cpu_to_le32(je->m_iops);
434 je->t_iops = cpu_to_le32(je->t_iops);
436 for (i = 0; i < 2; i++) {
437 je->rate[i] = cpu_to_le32(je->rate[i]);
438 je->iops[i] = cpu_to_le32(je->iops[i]);
441 je->elapsed_sec = cpu_to_le32(je->nr_running);
442 je->eta_sec = cpu_to_le64(je->eta_sec);
444 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, cmd->tag);
449 static int handle_command(struct fio_net_cmd *cmd)
453 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%lx\n",
454 fio_server_op(cmd->opcode), cmd->pdu_len, cmd->tag);
456 switch (cmd->opcode) {
457 case FIO_NET_CMD_QUIT:
458 fio_terminate_threads(TERMINATE_ALL);
460 case FIO_NET_CMD_EXIT:
463 case FIO_NET_CMD_JOB:
464 ret = handle_job_cmd(cmd);
466 case FIO_NET_CMD_JOBLINE:
467 ret = handle_jobline_cmd(cmd);
469 case FIO_NET_CMD_PROBE:
470 ret = handle_probe_cmd(cmd);
472 case FIO_NET_CMD_SEND_ETA:
473 ret = handle_send_eta_cmd(cmd);
476 log_err("fio: unknown opcode: %s\n",fio_server_op(cmd->opcode));
483 static int handle_connection(int sk, int block)
485 struct fio_net_cmd *cmd = NULL;
489 while (!exit_backend) {
490 struct pollfd pfd = {
497 ret = poll(&pfd, 1, 100);
501 log_err("fio: poll: %s\n", strerror(errno));
509 if (pfd.revents & POLLIN)
511 if (pfd.revents & (POLLERR|POLLHUP)) {
515 } while (!exit_backend);
520 cmd = fio_net_recv_cmd(sk);
526 ret = handle_command(cmd);
540 void fio_server_idle_loop(void)
543 handle_connection(server_fd, 0);
546 static int accept_loop(int listen_sk)
548 struct sockaddr_in addr;
549 fio_socklen_t len = sizeof(addr);
551 int ret, sk, flags, exitval = 0;
553 dprint(FD_NET, "server enter accept loop\n");
555 flags = fcntl(listen_sk, F_GETFL);
557 fcntl(listen_sk, F_SETFL, flags);
562 ret = poll(&pfd, 1, 100);
566 log_err("fio: poll: %s\n", strerror(errno));
571 if (pfd.revents & POLLIN)
573 } while (!exit_backend);
578 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
580 log_err("fio: accept: %s\n", strerror(errno));
584 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
588 exitval = handle_connection(sk, 1);
600 int fio_server_text_output(const char *buf, size_t len)
603 return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len, 0);
605 return log_local_buf(buf, len);
608 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
610 dst->max_val = cpu_to_le64(src->max_val);
611 dst->min_val = cpu_to_le64(src->min_val);
612 dst->samples = cpu_to_le64(src->samples);
615 * Encode to IEEE 754 for network transfer
617 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
618 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
621 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
625 for (i = 0; i < 2; i++) {
626 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
627 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
628 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
629 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
630 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
631 dst->agg[i] = cpu_to_le64(src->agg[i]);
634 dst->kb_base = cpu_to_le32(src->kb_base);
635 dst->groupid = cpu_to_le32(src->groupid);
639 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
640 * into a single payload.
642 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
647 dprint(FD_NET, "server sending end stats\n");
649 memset(&p, 0, sizeof(p));
651 strcpy(p.ts.name, ts->name);
652 strcpy(p.ts.verror, ts->verror);
653 strcpy(p.ts.description, ts->description);
655 p.ts.error = cpu_to_le32(ts->error);
656 p.ts.groupid = cpu_to_le32(ts->groupid);
657 p.ts.pid = cpu_to_le32(ts->pid);
658 p.ts.members = cpu_to_le32(ts->members);
660 for (i = 0; i < 2; i++) {
661 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
662 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
663 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
664 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
667 p.ts.usr_time = cpu_to_le64(ts->usr_time);
668 p.ts.sys_time = cpu_to_le64(ts->sys_time);
669 p.ts.ctx = cpu_to_le64(ts->ctx);
670 p.ts.minf = cpu_to_le64(ts->minf);
671 p.ts.majf = cpu_to_le64(ts->majf);
672 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
674 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
675 fio_fp64_t *src = &ts->percentile_list[i];
676 fio_fp64_t *dst = &p.ts.percentile_list[i];
678 dst->u.i = __cpu_to_le64(fio_double_to_uint64(src->u.f));
681 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
682 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
683 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
684 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
687 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
688 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
689 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
692 for (i = 0; i < 2; i++)
693 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
694 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
696 for (i = 0; i < 3; i++) {
697 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
698 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
701 p.ts.total_submit = cpu_to_le64(ts->total_submit);
702 p.ts.total_complete = cpu_to_le64(ts->total_complete);
704 for (i = 0; i < 2; i++) {
705 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
706 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
709 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
710 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
711 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
712 p.ts.first_error = cpu_to_le32(ts->first_error);
713 p.ts.kb_base = cpu_to_le32(ts->kb_base);
715 convert_gs(&p.rs, rs);
717 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0);
720 void fio_server_send_gs(struct group_run_stats *rs)
722 struct group_run_stats gs;
724 dprint(FD_NET, "server sending group run stats\n");
727 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0);
730 static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
734 for (i = 0; i < 2; i++) {
735 dst->ios[i] = cpu_to_le32(src->ios[i]);
736 dst->merges[i] = cpu_to_le32(src->merges[i]);
737 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
738 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
741 dst->io_ticks = cpu_to_le32(src->io_ticks);
742 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
743 dst->slavecount = cpu_to_le32(src->slavecount);
744 dst->max_util.u.i = __cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
747 static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
751 strcpy((char *) dst->name, (char *) src->name);
753 for (i = 0; i < 2; i++) {
754 dst->ios[i] = cpu_to_le32(src->ios[i]);
755 dst->merges[i] = cpu_to_le32(src->merges[i]);
756 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
757 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
760 dst->io_ticks = cpu_to_le32(src->io_ticks);
761 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
762 dst->msec = cpu_to_le64(src->msec);
765 void fio_server_send_du(void)
767 struct disk_util *du;
768 struct flist_head *entry;
769 struct cmd_du_pdu pdu;
771 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
773 memset(&pdu, 0, sizeof(pdu));
775 flist_for_each(entry, &disk_list) {
776 du = flist_entry(entry, struct disk_util, list);
778 convert_dus(&pdu.dus, &du->dus);
779 convert_agg(&pdu.agg, &du->agg);
781 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), 0);
785 int fio_server_log(const char *format, ...)
791 dprint(FD_NET, "server log\n");
793 va_start(args, format);
794 len = vsnprintf(buffer, sizeof(buffer), format, args);
797 return fio_server_text_output(buffer, len);
800 static int fio_init_server_ip(void)
804 sk = socket(AF_INET, SOCK_STREAM, 0);
806 log_err("fio: socket: %s\n", strerror(errno));
811 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
812 log_err("fio: setsockopt: %s\n", strerror(errno));
817 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
818 log_err("fio: setsockopt: %s\n", strerror(errno));
824 saddr_in.sin_family = AF_INET;
826 if (bind(sk, (struct sockaddr *) &saddr_in, sizeof(saddr_in)) < 0) {
827 log_err("fio: bind: %s\n", strerror(errno));
835 static int fio_init_server_sock(void)
837 struct sockaddr_un addr;
842 sk = socket(AF_UNIX, SOCK_STREAM, 0);
844 log_err("fio: socket: %s\n", strerror(errno));
850 memset(&addr, 0, sizeof(addr));
851 addr.sun_family = AF_UNIX;
852 strcpy(addr.sun_path, bind_sock);
855 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
857 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
858 log_err("fio: bind: %s\n", strerror(errno));
867 static int fio_init_server_connection(void)
872 dprint(FD_NET, "starting server\n");
875 sk = fio_init_server_ip();
877 sk = fio_init_server_sock();
883 sprintf(bind_str, "%s:%u", inet_ntoa(saddr_in.sin_addr), fio_net_port);
885 strcpy(bind_str, bind_sock);
887 log_info("fio: server listening on %s\n", bind_str);
889 if (listen(sk, 0) < 0) {
890 log_err("fio: listen: %s\n", strerror(errno));
897 int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
898 int *port, struct in_addr *inp)
902 *port = fio_net_port;
904 if (!strncmp(str, "sock:", 5)) {
905 *ptr = strdup(str + 5);
908 const char *host = str;
913 * Is it ip:<ip or host>:port
915 if (!strncmp(host, "ip:", 3))
917 else if (host[0] == ':') {
918 /* String is :port */
921 if (!lport || lport > 65535) {
922 log_err("fio: bad server port %u\n", port);
925 /* no hostname given, we are done */
931 * If no port seen yet, check if there's a last ':' at the end
934 portp = strchr(host, ':');
939 if (!lport || lport > 65535) {
940 log_err("fio: bad server port %u\n", port);
951 if (inet_aton(host, inp) != 1) {
952 struct hostent *hent;
954 hent = gethostbyname(host);
961 memcpy(inp, hent->h_addr, 4);
966 *port = fio_net_port;
972 * Server arg should be one of:
974 * sock:/path/to/socket
978 * Where sock uses unix domain sockets, and ip binds the server to
979 * a specific interface. If no arguments are given to the server, it
980 * uses IP and binds to 0.0.0.0.
983 static int fio_handle_server_arg(void)
985 int port = fio_net_port;
986 int is_sock, ret = 0;
988 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
993 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
994 &port, &saddr_in.sin_addr);
996 if (!is_sock && bind_sock) {
1002 fio_net_port = port;
1003 saddr_in.sin_port = htons(port);
1007 static int fio_server(void)
1011 dprint(FD_NET, "starting server\n");
1013 if (fio_handle_server_arg())
1016 sk = fio_init_server_connection();
1020 ret = accept_loop(sk);
1024 if (fio_server_arg) {
1025 free(fio_server_arg);
1026 fio_server_arg = NULL;
1034 void fio_server_got_signal(int signal)
1036 if (signal == SIGPIPE)
1039 log_info("\nfio: terminating on signal %d\n", signal);
1044 static int check_existing_pidfile(const char *pidfile)
1051 if (stat(pidfile, &sb))
1054 f = fopen(pidfile, "r");
1058 if (fread(buf, sb.st_size, 1, f) <= 0) {
1065 if (kill(pid, SIGCONT) < 0)
1066 return errno != ESRCH;
1071 static int write_pid(pid_t pid, const char *pidfile)
1075 fpid = fopen(pidfile, "w");
1077 log_err("fio: failed opening pid file %s\n", pidfile);
1081 fprintf(fpid, "%u\n", (unsigned int) pid);
1087 * If pidfile is specified, background us.
1089 int fio_start_server(char *pidfile)
1095 return fio_server();
1097 if (check_existing_pidfile(pidfile)) {
1098 log_err("fio: pidfile %s exists and server appears alive\n",
1105 log_err("fio: failed server fork: %s", strerror(errno));
1109 int ret = write_pid(pid, pidfile);
1115 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1117 close(STDIN_FILENO);
1118 close(STDOUT_FILENO);
1119 close(STDERR_FILENO);
1131 void fio_server_set_arg(const char *arg)
1133 fio_server_arg = strdup(arg);