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));
186 else if (cmdret->opcode != cmd.opcode) {
187 log_err("fio: fragment opcode mismatch (%d != %d)\n",
188 cmdret->opcode, cmd.opcode);
196 /* There's payload, get it */
197 pdu = (void *) cmdret->payload + pdu_offset;
198 ret = fio_recv_data(sk, pdu, cmd.pdu_len);
202 /* Verify payload crc */
203 crc = crc16(pdu, cmd.pdu_len);
204 if (crc != cmd.pdu_crc16) {
205 log_err("fio: server bad crc on payload ");
206 log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
211 pdu_offset += cmd.pdu_len;
213 cmdret->pdu_len += cmd.pdu_len;
215 } while (cmd.flags & FIO_NET_CMD_F_MORE);
221 /* zero-terminate text input */
222 if (cmdret->pdu_len && (cmdret->opcode == FIO_NET_CMD_TEXT ||
223 cmdret->opcode == FIO_NET_CMD_JOB)) {
224 char *buf = (char *) cmdret->payload;
226 buf[cmdret->pdu_len ] = '\0';
228 /* frag flag is internal */
229 cmdret->flags &= ~FIO_NET_CMD_F_MORE;
235 void fio_net_cmd_crc(struct fio_net_cmd *cmd)
239 cmd->cmd_crc16 = __cpu_to_le16(crc16(cmd, FIO_NET_CMD_CRC_SZ));
241 pdu_len = le32_to_cpu(cmd->pdu_len);
243 cmd->pdu_crc16 = __cpu_to_le16(crc16(cmd->payload, pdu_len));
246 int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
249 struct fio_net_cmd *cmd = NULL;
250 size_t this_len, cur_len = 0;
255 if (this_len > FIO_SERVER_MAX_PDU)
256 this_len = FIO_SERVER_MAX_PDU;
258 if (!cmd || cur_len < sizeof(*cmd) + this_len) {
262 cur_len = sizeof(*cmd) + this_len;
263 cmd = malloc(cur_len);
266 fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
269 cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
271 fio_net_cmd_crc(cmd);
273 ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
276 } while (!ret && size);
284 static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
286 struct fio_net_cmd cmd;
288 fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
289 fio_net_cmd_crc(&cmd);
291 return fio_send_data(sk, &cmd, sizeof(cmd));
295 * If 'list' is non-NULL, then allocate and store the sent command for
296 * later verification.
298 int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
299 struct flist_head *list)
301 struct fio_net_int_cmd *cmd;
305 return fio_net_send_simple_stack_cmd(sk, opcode, tag);
307 cmd = malloc(sizeof(*cmd));
309 fio_init_net_cmd(&cmd->cmd, opcode, NULL, 0, (uintptr_t) cmd);
310 fio_net_cmd_crc(&cmd->cmd);
312 INIT_FLIST_HEAD(&cmd->list);
313 gettimeofday(&cmd->tv, NULL);
314 cmd->saved_tag = tag;
316 ret = fio_send_data(sk, &cmd->cmd, sizeof(cmd->cmd));
322 flist_add_tail(&cmd->list, list);
326 static int fio_server_send_quit_cmd(void)
328 dprint(FD_NET, "server: sending quit\n");
329 return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0, NULL);
332 static int handle_job_cmd(struct fio_net_cmd *cmd)
334 char *buf = (char *) cmd->payload;
337 if (parse_jobs_ini(buf, 1, 0)) {
338 fio_server_send_quit_cmd();
342 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0, NULL);
345 fio_server_send_quit_cmd();
350 static int handle_jobline_cmd(struct fio_net_cmd *cmd)
352 void *pdu = cmd->payload;
353 struct cmd_single_line_pdu *cslp;
354 struct cmd_line_pdu *clp;
355 unsigned long offset;
360 clp->lines = le16_to_cpu(clp->lines);
361 argv = malloc(clp->lines * sizeof(char *));
362 offset = sizeof(*clp);
364 dprint(FD_NET, "server: %d command line args\n", clp->lines);
366 for (i = 0; i < clp->lines; i++) {
368 argv[i] = (char *) cslp->text;
370 offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
371 dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
374 if (parse_cmd_line(clp->lines, argv)) {
375 fio_server_send_quit_cmd();
382 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0, NULL);
385 fio_server_send_quit_cmd();
390 static int handle_probe_cmd(struct fio_net_cmd *cmd)
392 struct cmd_probe_pdu probe;
394 dprint(FD_NET, "server: sending probe reply\n");
396 memset(&probe, 0, sizeof(probe));
397 gethostname((char *) probe.hostname, sizeof(probe.hostname));
398 #ifdef FIO_BIG_ENDIAN
401 probe.fio_major = FIO_MAJOR;
402 probe.fio_minor = FIO_MINOR;
403 probe.fio_patch = FIO_PATCH;
406 probe.arch = FIO_ARCH;
408 probe.bpp = sizeof(void *);
410 return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), cmd->tag);
413 static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
422 size = sizeof(*je) + thread_number * sizeof(char) + 1;
426 if (!calc_thread_status(je, 1)) {
431 dprint(FD_NET, "server sending status\n");
433 je->nr_running = cpu_to_le32(je->nr_running);
434 je->nr_ramp = cpu_to_le32(je->nr_ramp);
435 je->nr_pending = cpu_to_le32(je->nr_pending);
436 je->files_open = cpu_to_le32(je->files_open);
437 je->m_rate = cpu_to_le32(je->m_rate);
438 je->t_rate = cpu_to_le32(je->t_rate);
439 je->m_iops = cpu_to_le32(je->m_iops);
440 je->t_iops = cpu_to_le32(je->t_iops);
442 for (i = 0; i < 2; i++) {
443 je->rate[i] = cpu_to_le32(je->rate[i]);
444 je->iops[i] = cpu_to_le32(je->iops[i]);
447 je->elapsed_sec = cpu_to_le32(je->nr_running);
448 je->eta_sec = cpu_to_le64(je->eta_sec);
450 fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, cmd->tag);
455 static int handle_command(struct fio_net_cmd *cmd)
459 dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%lx\n",
460 fio_server_op(cmd->opcode), cmd->pdu_len, cmd->tag);
462 switch (cmd->opcode) {
463 case FIO_NET_CMD_QUIT:
464 fio_terminate_threads(TERMINATE_ALL);
466 case FIO_NET_CMD_EXIT:
469 case FIO_NET_CMD_JOB:
470 ret = handle_job_cmd(cmd);
472 case FIO_NET_CMD_JOBLINE:
473 ret = handle_jobline_cmd(cmd);
475 case FIO_NET_CMD_PROBE:
476 ret = handle_probe_cmd(cmd);
478 case FIO_NET_CMD_SEND_ETA:
479 ret = handle_send_eta_cmd(cmd);
482 log_err("fio: unknown opcode: %s\n",fio_server_op(cmd->opcode));
489 static int handle_connection(int sk, int block)
491 struct fio_net_cmd *cmd = NULL;
495 while (!exit_backend) {
496 struct pollfd pfd = {
503 ret = poll(&pfd, 1, 100);
507 log_err("fio: poll: %s\n", strerror(errno));
515 if (pfd.revents & POLLIN)
517 if (pfd.revents & (POLLERR|POLLHUP)) {
521 } while (!exit_backend);
526 cmd = fio_net_recv_cmd(sk);
532 ret = handle_command(cmd);
546 void fio_server_idle_loop(void)
548 if (!first_cmd_check)
549 fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_RUN, 0, NULL);
551 handle_connection(server_fd, 0);
554 static int accept_loop(int listen_sk)
556 struct sockaddr_in addr;
557 fio_socklen_t len = sizeof(addr);
559 int ret, sk, flags, exitval = 0;
561 dprint(FD_NET, "server enter accept loop\n");
563 flags = fcntl(listen_sk, F_GETFL);
565 fcntl(listen_sk, F_SETFL, flags);
570 ret = poll(&pfd, 1, 100);
574 log_err("fio: poll: %s\n", strerror(errno));
579 if (pfd.revents & POLLIN)
581 } while (!exit_backend);
586 sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
588 log_err("fio: accept: %s\n", strerror(errno));
592 dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
596 exitval = handle_connection(sk, 1);
608 int fio_server_text_output(const char *buf, size_t len)
611 return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len, 0);
613 return log_local_buf(buf, len);
616 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
618 dst->max_val = cpu_to_le64(src->max_val);
619 dst->min_val = cpu_to_le64(src->min_val);
620 dst->samples = cpu_to_le64(src->samples);
623 * Encode to IEEE 754 for network transfer
625 dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
626 dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
629 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
633 for (i = 0; i < 2; i++) {
634 dst->max_run[i] = cpu_to_le64(src->max_run[i]);
635 dst->min_run[i] = cpu_to_le64(src->min_run[i]);
636 dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
637 dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
638 dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
639 dst->agg[i] = cpu_to_le64(src->agg[i]);
642 dst->kb_base = cpu_to_le32(src->kb_base);
643 dst->groupid = cpu_to_le32(src->groupid);
647 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
648 * into a single payload.
650 void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
655 dprint(FD_NET, "server sending end stats\n");
657 memset(&p, 0, sizeof(p));
659 strcpy(p.ts.name, ts->name);
660 strcpy(p.ts.verror, ts->verror);
661 strcpy(p.ts.description, ts->description);
663 p.ts.error = cpu_to_le32(ts->error);
664 p.ts.groupid = cpu_to_le32(ts->groupid);
665 p.ts.pid = cpu_to_le32(ts->pid);
666 p.ts.members = cpu_to_le32(ts->members);
668 for (i = 0; i < 2; i++) {
669 convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
670 convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
671 convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
672 convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
675 p.ts.usr_time = cpu_to_le64(ts->usr_time);
676 p.ts.sys_time = cpu_to_le64(ts->sys_time);
677 p.ts.ctx = cpu_to_le64(ts->ctx);
678 p.ts.minf = cpu_to_le64(ts->minf);
679 p.ts.majf = cpu_to_le64(ts->majf);
680 p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
682 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
683 fio_fp64_t *src = &ts->percentile_list[i];
684 fio_fp64_t *dst = &p.ts.percentile_list[i];
686 dst->u.i = __cpu_to_le64(fio_double_to_uint64(src->u.f));
689 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
690 p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
691 p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
692 p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
695 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
696 p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
697 p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
700 for (i = 0; i < 2; i++)
701 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
702 p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
704 for (i = 0; i < 3; i++) {
705 p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
706 p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
709 p.ts.total_submit = cpu_to_le64(ts->total_submit);
710 p.ts.total_complete = cpu_to_le64(ts->total_complete);
712 for (i = 0; i < 2; i++) {
713 p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
714 p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
717 p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
718 p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
719 p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
720 p.ts.first_error = cpu_to_le32(ts->first_error);
721 p.ts.kb_base = cpu_to_le32(ts->kb_base);
723 convert_gs(&p.rs, rs);
725 fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0);
728 void fio_server_send_gs(struct group_run_stats *rs)
730 struct group_run_stats gs;
732 dprint(FD_NET, "server sending group run stats\n");
735 fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0);
738 static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
742 for (i = 0; i < 2; i++) {
743 dst->ios[i] = cpu_to_le32(src->ios[i]);
744 dst->merges[i] = cpu_to_le32(src->merges[i]);
745 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
746 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
749 dst->io_ticks = cpu_to_le32(src->io_ticks);
750 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
751 dst->slavecount = cpu_to_le32(src->slavecount);
752 dst->max_util.u.i = __cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
755 static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
759 strcpy((char *) dst->name, (char *) src->name);
761 for (i = 0; i < 2; i++) {
762 dst->ios[i] = cpu_to_le32(src->ios[i]);
763 dst->merges[i] = cpu_to_le32(src->merges[i]);
764 dst->sectors[i] = cpu_to_le64(src->sectors[i]);
765 dst->ticks[i] = cpu_to_le32(src->ticks[i]);
768 dst->io_ticks = cpu_to_le32(src->io_ticks);
769 dst->time_in_queue = cpu_to_le32(src->time_in_queue);
770 dst->msec = cpu_to_le64(src->msec);
773 void fio_server_send_du(void)
775 struct disk_util *du;
776 struct flist_head *entry;
777 struct cmd_du_pdu pdu;
779 dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
781 memset(&pdu, 0, sizeof(pdu));
783 flist_for_each(entry, &disk_list) {
784 du = flist_entry(entry, struct disk_util, list);
786 convert_dus(&pdu.dus, &du->dus);
787 convert_agg(&pdu.agg, &du->agg);
789 fio_net_send_cmd(server_fd, FIO_NET_CMD_DU, &pdu, sizeof(pdu), 0);
793 int fio_server_log(const char *format, ...)
799 dprint(FD_NET, "server log\n");
801 va_start(args, format);
802 len = vsnprintf(buffer, sizeof(buffer), format, args);
805 return fio_server_text_output(buffer, len);
808 static int fio_init_server_ip(void)
812 sk = socket(AF_INET, SOCK_STREAM, 0);
814 log_err("fio: socket: %s\n", strerror(errno));
819 if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
820 log_err("fio: setsockopt: %s\n", strerror(errno));
825 if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
826 log_err("fio: setsockopt: %s\n", strerror(errno));
832 saddr_in.sin_family = AF_INET;
834 if (bind(sk, (struct sockaddr *) &saddr_in, sizeof(saddr_in)) < 0) {
835 log_err("fio: bind: %s\n", strerror(errno));
843 static int fio_init_server_sock(void)
845 struct sockaddr_un addr;
850 sk = socket(AF_UNIX, SOCK_STREAM, 0);
852 log_err("fio: socket: %s\n", strerror(errno));
858 memset(&addr, 0, sizeof(addr));
859 addr.sun_family = AF_UNIX;
860 strcpy(addr.sun_path, bind_sock);
863 len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
865 if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
866 log_err("fio: bind: %s\n", strerror(errno));
875 static int fio_init_server_connection(void)
880 dprint(FD_NET, "starting server\n");
883 sk = fio_init_server_ip();
885 sk = fio_init_server_sock();
891 sprintf(bind_str, "%s:%u", inet_ntoa(saddr_in.sin_addr), fio_net_port);
893 strcpy(bind_str, bind_sock);
895 log_info("fio: server listening on %s\n", bind_str);
897 if (listen(sk, 0) < 0) {
898 log_err("fio: listen: %s\n", strerror(errno));
905 int fio_server_parse_string(const char *str, char **ptr, int *is_sock,
906 int *port, struct in_addr *inp)
910 *port = fio_net_port;
912 if (!strncmp(str, "sock:", 5)) {
913 *ptr = strdup(str + 5);
916 const char *host = str;
921 * Is it ip:<ip or host>:port
923 if (!strncmp(host, "ip:", 3))
925 else if (host[0] == ':') {
926 /* String is :port */
929 if (!lport || lport > 65535) {
930 log_err("fio: bad server port %u\n", port);
933 /* no hostname given, we are done */
939 * If no port seen yet, check if there's a last ':' at the end
942 portp = strchr(host, ':');
947 if (!lport || lport > 65535) {
948 log_err("fio: bad server port %u\n", port);
959 if (inet_aton(host, inp) != 1) {
960 struct hostent *hent;
962 hent = gethostbyname(host);
969 memcpy(inp, hent->h_addr, 4);
974 *port = fio_net_port;
980 * Server arg should be one of:
982 * sock:/path/to/socket
986 * Where sock uses unix domain sockets, and ip binds the server to
987 * a specific interface. If no arguments are given to the server, it
988 * uses IP and binds to 0.0.0.0.
991 static int fio_handle_server_arg(void)
993 int port = fio_net_port;
994 int is_sock, ret = 0;
996 saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
1001 ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
1002 &port, &saddr_in.sin_addr);
1004 if (!is_sock && bind_sock) {
1010 fio_net_port = port;
1011 saddr_in.sin_port = htons(port);
1015 static int fio_server(void)
1019 dprint(FD_NET, "starting server\n");
1021 if (fio_handle_server_arg())
1024 sk = fio_init_server_connection();
1028 ret = accept_loop(sk);
1032 if (fio_server_arg) {
1033 free(fio_server_arg);
1034 fio_server_arg = NULL;
1042 void fio_server_got_signal(int signal)
1044 if (signal == SIGPIPE)
1047 log_info("\nfio: terminating on signal %d\n", signal);
1052 static int check_existing_pidfile(const char *pidfile)
1059 if (stat(pidfile, &sb))
1062 f = fopen(pidfile, "r");
1066 if (fread(buf, sb.st_size, 1, f) <= 0) {
1073 if (kill(pid, SIGCONT) < 0)
1074 return errno != ESRCH;
1079 static int write_pid(pid_t pid, const char *pidfile)
1083 fpid = fopen(pidfile, "w");
1085 log_err("fio: failed opening pid file %s\n", pidfile);
1089 fprintf(fpid, "%u\n", (unsigned int) pid);
1095 * If pidfile is specified, background us.
1097 int fio_start_server(char *pidfile)
1103 return fio_server();
1105 if (check_existing_pidfile(pidfile)) {
1106 log_err("fio: pidfile %s exists and server appears alive\n",
1113 log_err("fio: failed server fork: %s", strerror(errno));
1117 int ret = write_pid(pid, pidfile);
1123 openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
1125 close(STDIN_FILENO);
1126 close(STDOUT_FILENO);
1127 close(STDERR_FILENO);
1139 void fio_server_set_arg(const char *arg)
1141 fio_server_arg = strdup(arg);