[fio.git] / server.c

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <unistd.h>
#include <limits.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/poll.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <syslog.h>
#include <signal.h>

#include "fio.h"
#include "server.h"
#include "crc/crc16.h"
#include "ieee754.h"

int fio_net_port = 8765;

int exit_backend = 0;

static int server_fd = -1;

int fio_send_data(int sk, const void *p, unsigned int len)
{
	assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_PDU);

	do {
		int ret = send(sk, p, len, 0);

		if (ret > 0) {
			len -= ret;
			if (!len)
				break;
			p += ret;
			continue;
		} else if (!ret)
			break;
		else if (errno == EAGAIN || errno == EINTR)
			continue;
	} while (!exit_backend);

	if (!len)
		return 0;

	return 1;
}

int fio_recv_data(int sk, void *p, unsigned int len)
{
	do {
		int ret = recv(sk, p, len, MSG_WAITALL);

		if (ret > 0) {
			len -= ret;
			if (!len)
				break;
			p += ret;
			continue;
		} else if (!ret)
			break;
		else if (errno == EAGAIN || errno == EINTR)
			continue;
	} while (!exit_backend);

	if (!len)
		return 0;

	return -1;
}

static int verify_convert_cmd(struct fio_net_cmd *cmd)
{
	uint16_t crc;

	cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
	cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);

	crc = crc16(cmd, FIO_NET_CMD_CRC_SZ);
	if (crc != cmd->cmd_crc16) {
		log_err("fio: server bad crc on command (got %x, wanted %x)\n",
				cmd->cmd_crc16, crc);
		return 1;
	}

	cmd->version	= le16_to_cpu(cmd->version);
	cmd->opcode	= le16_to_cpu(cmd->opcode);
	cmd->flags	= le32_to_cpu(cmd->flags);
	cmd->serial	= le64_to_cpu(cmd->serial);
	cmd->pdu_len	= le32_to_cpu(cmd->pdu_len);

	switch (cmd->version) {
	case FIO_SERVER_VER1:
		break;
	default:
		log_err("fio: bad server cmd version %d\n", cmd->version);
		return 1;
	}

	if (cmd->pdu_len > FIO_SERVER_MAX_PDU) {
		log_err("fio: command payload too large: %u\n", cmd->pdu_len);
		return 1;
	}

	return 0;
}

/*
 * Read (and defragment, if necessary) incoming commands
 */
struct fio_net_cmd *fio_net_recv_cmd(int sk, int block)
{
	struct fio_net_cmd cmd, *cmdret = NULL;
	size_t cmd_size = 0, pdu_offset = 0;
	uint16_t crc;
	int ret, first = 1;
	void *pdu = NULL;

	do {
		struct pollfd pfd;

		pfd.fd = sk;
		pfd.events = POLLIN;
		ret = 0;
		do {
			int timeo = block ? 100 : 10;

			ret = poll(&pfd, 1, timeo);
			if (ret < 0) {
				if (errno == EINTR)
					break;
				log_err("fio: poll: %s\n", strerror(errno));
				break;
			} else if (!ret) {
				if (!block)
					return NULL;
				continue;
			}

			if (pfd.revents & POLLIN)
				break;
			if (pfd.revents & (POLLERR|POLLHUP)) {
				ret = 1;
				break;
			}
		} while (ret >= 0 && block);

		if (ret < 0)
			break;

		ret = fio_recv_data(sk, &cmd, sizeof(cmd));
		if (ret)
			break;

		/* We have a command, verify it and swap if need be */
		ret = verify_convert_cmd(&cmd);
		if (ret)
			break;

		if (first) {
			/* if this is text, add room for \0 at the end */
			cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
			assert(!cmdret);
		} else
			cmd_size += cmd.pdu_len;

		cmdret = realloc(cmdret, cmd_size);

		if (first)
			memcpy(cmdret, &cmd, sizeof(cmd));
		else
			assert(cmdret->opcode == cmd.opcode);

		if (!cmd.pdu_len)
			break;

		/* There's payload, get it */
		pdu = (void *) cmdret->payload + pdu_offset;
		ret = fio_recv_data(sk, pdu, cmd.pdu_len);
		if (ret)
			break;

		/* Verify payload crc */
		crc = crc16(pdu, cmd.pdu_len);
		if (crc != cmd.pdu_crc16) {
			log_err("fio: server bad crc on payload ");
			log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
			ret = 1;
			break;
		}

		pdu_offset += cmd.pdu_len;
		if (!first)
			cmdret->pdu_len += cmd.pdu_len;
		first = 0;
	} while (cmd.flags & FIO_NET_CMD_F_MORE);

	if (ret) {
		free(cmdret);
		cmdret = NULL;
	} else if (cmdret) {
		/* zero-terminate text input */
		if (cmdret->pdu_len && (cmdret->opcode == FIO_NET_CMD_TEXT ||
		    cmdret->opcode == FIO_NET_CMD_JOB)) {
			char *buf = (char *) cmdret->payload;

			buf[cmdret->pdu_len ] = '\0';
		}
		/* frag flag is internal */
		cmdret->flags &= ~FIO_NET_CMD_F_MORE;
	}

	return cmdret;
}

void fio_net_cmd_crc(struct fio_net_cmd *cmd)
{
	uint32_t pdu_len;

	cmd->cmd_crc16 = __cpu_to_le16(crc16(cmd, FIO_NET_CMD_CRC_SZ));

	pdu_len = le32_to_cpu(cmd->pdu_len);
	if (pdu_len)
		cmd->pdu_crc16 = __cpu_to_le16(crc16(cmd->payload, pdu_len));
}

int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size)
{
	struct fio_net_cmd *cmd;
	size_t this_len;
	int ret;

	do {
		this_len = size;
		if (this_len > FIO_SERVER_MAX_PDU)
			this_len = FIO_SERVER_MAX_PDU;

		cmd = malloc(sizeof(*cmd) + this_len);

		fio_init_net_cmd(cmd, opcode, buf, this_len);

		if (this_len < size)
			cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);

		fio_net_cmd_crc(cmd);

		ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
		free(cmd);
		size -= this_len;
		buf += this_len;
	} while (!ret && size);

	return ret;
}

int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t serial)
{
	struct fio_net_cmd cmd = {
		.version	= __cpu_to_le16(FIO_SERVER_VER1),
		.opcode		= cpu_to_le16(opcode),
		.serial		= cpu_to_le64(serial),
	};

	fio_net_cmd_crc(&cmd);

	return fio_send_data(sk, &cmd, sizeof(cmd));
}

static int fio_server_send_quit_cmd(void)
{
	dprint(FD_NET, "server: sending quit\n");
	return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0);
}

static int handle_job_cmd(struct fio_net_cmd *cmd)
{
	char *buf = (char *) cmd->payload;
	int ret;

	if (parse_jobs_ini(buf, 1, 0)) {
		fio_server_send_quit_cmd();
		return -1;
	}

	fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0);

	ret = exec_run();
	fio_server_send_quit_cmd();
	reset_fio_state();
	return ret;
}

static int handle_jobline_cmd(struct fio_net_cmd *cmd)
{
	struct cmd_line_pdu *pdu = (struct cmd_line_pdu *) cmd->payload;
	char *argv[FIO_NET_CMD_JOBLINE_ARGV];
	int ret, i;

	pdu->argc = le16_to_cpu(pdu->argc);

	dprint(FD_NET, "server: %d command line args\n", pdu->argc);

	for (i = 0; i < pdu->argc; i++) {
		argv[i] = (char *) pdu->argv[i];
		dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
	}

	if (parse_cmd_line(pdu->argc, argv)) {
		fio_server_send_quit_cmd();
		return -1;
	}

	fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0);

	ret = exec_run();
	fio_server_send_quit_cmd();
	reset_fio_state();
	return ret;
}

static int handle_probe_cmd(struct fio_net_cmd *cmd)
{
	struct cmd_probe_pdu probe;

	memset(&probe, 0, sizeof(probe));
	gethostname((char *) probe.hostname, sizeof(probe.hostname));
#ifdef FIO_BIG_ENDIAN
	probe.bigendian = 1;
#endif
	probe.fio_major = FIO_MAJOR;
	probe.fio_minor = FIO_MINOR;
	probe.fio_patch = FIO_PATCH;

	return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe));
}

static int handle_command(struct fio_net_cmd *cmd)
{
	int ret;

	dprint(FD_NET, "server: got opcode %d\n", cmd->opcode);

	switch (cmd->opcode) {
	case FIO_NET_CMD_QUIT:
		fio_terminate_threads(TERMINATE_ALL);
		return -1;
	case FIO_NET_CMD_EXIT:
		exit_backend = 1;
		return -1;
	case FIO_NET_CMD_JOB:
		ret = handle_job_cmd(cmd);
		break;
	case FIO_NET_CMD_JOBLINE:
		ret = handle_jobline_cmd(cmd);
		break;
	case FIO_NET_CMD_PROBE:
		ret = handle_probe_cmd(cmd);
		break;
	default:
		log_err("fio: unknown opcode: %d\n", cmd->opcode);
		ret = 1;
	}

	return ret;
}

static int handle_connection(int sk, int block)
{
	struct fio_net_cmd *cmd = NULL;
	int ret = 0;

	/* read forever */
	while (!exit_backend) {
		cmd = fio_net_recv_cmd(sk, block);
		if (!cmd) {
			ret = -1;
			break;
		}

		ret = handle_command(cmd);
		if (ret)
			break;

		free(cmd);
		cmd = NULL;
	}

	if (cmd)
		free(cmd);

	return ret;
}

void fio_server_idle_loop(void)
{
	if (server_fd != -1)
		handle_connection(server_fd, 0);
}

static int accept_loop(int listen_sk)
{
	struct sockaddr_in addr;
	fio_socklen_t len = sizeof(addr);
	struct pollfd pfd;
	int ret, sk, flags, exitval = 0;

	dprint(FD_NET, "server enter accept loop\n");

	flags = fcntl(listen_sk, F_GETFL);
	flags |= O_NONBLOCK;
	fcntl(listen_sk, F_SETFL, flags);
again:
	pfd.fd = listen_sk;
	pfd.events = POLLIN;
	do {
		ret = poll(&pfd, 1, 100);
		if (ret < 0) {
			if (errno == EINTR)
				break;
			log_err("fio: poll: %s\n", strerror(errno));
			goto out;
		} else if (!ret)
			continue;

		if (pfd.revents & POLLIN)
			break;
	} while (!exit_backend);

	if (exit_backend)
		goto out;

	sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
	if (sk < 0) {
		log_err("fio: accept: %s\n", strerror(errno));
		return -1;
	}

	dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));

	server_fd = sk;

	exitval = handle_connection(sk, 1);

	server_fd = -1;
	close(sk);

	if (!exit_backend)
		goto again;

out:
	return exitval;
}

int fio_server_text_output(const char *buf, unsigned int len)
{
	if (server_fd != -1)
		return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len);

	return fwrite(buf, len, 1, f_err);
}

static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
{
	dst->max_val	= cpu_to_le64(src->max_val);
	dst->min_val	= cpu_to_le64(src->min_val);
	dst->samples	= cpu_to_le64(src->samples);

	/*
	 * Encode to IEEE 754 for network transfer
	 */
	dst->mean.u.i	= __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
	dst->S.u.i	= __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
}

static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
{
	int i;

	for (i = 0; i < 2; i++) {
		dst->max_run[i]		= cpu_to_le64(src->max_run[i]);
		dst->min_run[i]		= cpu_to_le64(src->min_run[i]);
		dst->max_bw[i]		= cpu_to_le64(src->max_bw[i]);
		dst->min_bw[i]		= cpu_to_le64(src->min_bw[i]);
		dst->io_kb[i]		= cpu_to_le64(src->io_kb[i]);
		dst->agg[i]		= cpu_to_le64(src->agg[i]);
	}

	dst->kb_base	= cpu_to_le32(src->kb_base);
	dst->groupid	= cpu_to_le32(src->groupid);
}

/*
 * Send a CMD_TS, which packs struct thread_stat and group_run_stats
 * into a single payload.
 */
void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
{
	struct cmd_ts_pdu p;
	int i, j;

	dprint(FD_NET, "server sending end stats\n");

	memset(&p, 0, sizeof(p));

	strcpy(p.ts.name, ts->name);
	strcpy(p.ts.verror, ts->verror);
	strcpy(p.ts.description, ts->description);

	p.ts.error	= cpu_to_le32(ts->error);
	p.ts.groupid	= cpu_to_le32(ts->groupid);
	p.ts.pid	= cpu_to_le32(ts->pid);
	p.ts.members	= cpu_to_le32(ts->members);

	for (i = 0; i < 2; i++) {
		convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
		convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
		convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
		convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
	}

	p.ts.usr_time		= cpu_to_le64(ts->usr_time);
	p.ts.sys_time		= cpu_to_le64(ts->sys_time);
	p.ts.ctx		= cpu_to_le64(ts->ctx);
	p.ts.minf		= cpu_to_le64(ts->minf);
	p.ts.majf		= cpu_to_le64(ts->majf);
	p.ts.clat_percentiles	= cpu_to_le64(ts->clat_percentiles);

	for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
		fio_fp64_t *fp = &p.ts.percentile_list[i];

		fp->u.i = __cpu_to_le64(fio_double_to_uint64(fp->u.f));
	}

	for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
		p.ts.io_u_map[i]	= cpu_to_le32(ts->io_u_map[i]);
		p.ts.io_u_submit[i]	= cpu_to_le32(ts->io_u_submit[i]);
		p.ts.io_u_complete[i]	= cpu_to_le32(ts->io_u_complete[i]);
	}

	for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
		p.ts.io_u_lat_u[i]	= cpu_to_le32(ts->io_u_lat_u[i]);
		p.ts.io_u_lat_m[i]	= cpu_to_le32(ts->io_u_lat_m[i]);
	}

	for (i = 0; i < 2; i++)
		for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
			p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);

	for (i = 0; i < 3; i++) {
		p.ts.total_io_u[i]	= cpu_to_le64(ts->total_io_u[i]);
		p.ts.short_io_u[i]	= cpu_to_le64(ts->short_io_u[i]);
	}

	p.ts.total_submit	= cpu_to_le64(ts->total_submit);
	p.ts.total_complete	= cpu_to_le64(ts->total_complete);

	for (i = 0; i < 2; i++) {
		p.ts.io_bytes[i]	= cpu_to_le64(ts->io_bytes[i]);
		p.ts.runtime[i]		= cpu_to_le64(ts->runtime[i]);
	}

	p.ts.total_run_time	= cpu_to_le64(ts->total_run_time);
	p.ts.continue_on_error	= cpu_to_le16(ts->continue_on_error);
	p.ts.total_err_count	= cpu_to_le64(ts->total_err_count);
	p.ts.first_error	= cpu_to_le32(ts->first_error);
	p.ts.kb_base		= cpu_to_le32(ts->kb_base);

	convert_gs(&p.rs, rs);

	fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p));
}

void fio_server_send_gs(struct group_run_stats *rs)
{
	struct group_run_stats gs;

	dprint(FD_NET, "server sending group run stats\n");

	convert_gs(&gs, rs);
	fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs));
}

void fio_server_send_status(void)
{
	struct jobs_eta *je;
	size_t size;
	void *buf;
	int i;

	size = sizeof(*je) + thread_number * sizeof(char);
	buf = malloc(size);
	memset(buf, 0, size);
	je = buf;

	if (!calc_thread_status(je)) {
		free(je);
		return;
	}

	dprint(FD_NET, "server sending status\n");

	je->nr_running		= cpu_to_le32(je->nr_running);
	je->nr_ramp		= cpu_to_le32(je->nr_ramp);
	je->nr_pending		= cpu_to_le32(je->nr_pending);
	je->files_open		= cpu_to_le32(je->files_open);
	je->m_rate		= cpu_to_le32(je->m_rate);
	je->t_rate		= cpu_to_le32(je->t_rate);
	je->m_iops		= cpu_to_le32(je->m_iops);
	je->t_iops		= cpu_to_le32(je->t_iops);

	for (i = 0; i < 2; i++) {
		je->rate[i]	= cpu_to_le32(je->rate[i]);
		je->iops[i]	= cpu_to_le32(je->iops[i]);
	}

	je->elapsed_sec		= cpu_to_le32(je->nr_running);
	je->eta_sec		= cpu_to_le64(je->eta_sec);

	fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, buf, size);
	free(je);
}

int fio_server_log(const char *format, ...)
{
	char buffer[1024];
	va_list args;
	size_t len;

	dprint(FD_NET, "server log\n");

	va_start(args, format);
	len = vsnprintf(buffer, sizeof(buffer), format, args);
	va_end(args);

	return fio_server_text_output(buffer, len);
}

static int fio_server(void)
{
	struct sockaddr_in saddr_in;
	struct sockaddr addr;
	fio_socklen_t len;
	int sk, opt, ret;

	dprint(FD_NET, "starting server\n");

	sk = socket(AF_INET, SOCK_STREAM, 0);
	if (sk < 0) {
		log_err("fio: socket: %s\n", strerror(errno));
		return -1;
	}

	opt = 1;
	if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
		log_err("fio: setsockopt: %s\n", strerror(errno));
		return -1;
	}
#ifdef SO_REUSEPORT
	if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
		log_err("fio: setsockopt: %s\n", strerror(errno));
		return -1;
	}
#endif

	saddr_in.sin_family = AF_INET;
	saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
	saddr_in.sin_port = htons(fio_net_port);

	if (bind(sk, (struct sockaddr *) &saddr_in, sizeof(saddr_in)) < 0) {
		log_err("fio: bind: %s\n", strerror(errno));
		return -1;
	}

	if (listen(sk, 1) < 0) {
		log_err("fio: listen: %s\n", strerror(errno));
		return -1;
	}

	len = sizeof(addr);
	if (getsockname(sk, &addr, &len) < 0) {
		log_err("fio: getsockname: %s\n", strerror(errno));
		return -1;
	}

	ret = accept_loop(sk);
	close(sk);
	return ret;
}

static void sig_int(int sig)
{
	fio_terminate_threads(TERMINATE_ALL);
	exit_backend = 1;
}

static void server_signal_handler(void)
{
	struct sigaction act;

	memset(&act, 0, sizeof(act));
	act.sa_handler = sig_int;
	act.sa_flags = SA_RESTART;
	sigaction(SIGINT, &act, NULL);

	memset(&act, 0, sizeof(act));
	act.sa_handler = sig_int;
	act.sa_flags = SA_RESTART;
	sigaction(SIGTERM, &act, NULL);
}

int fio_start_server(int daemonize)
{
	pid_t pid;

	server_signal_handler();

	if (!daemonize)
		return fio_server();

	openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
	pid = fork();
	if (pid < 0) {
		syslog(LOG_ERR, "failed server fork");
		return -1;
	} else if (pid)
		exit(0);

	setsid();
	close(STDIN_FILENO);
	close(STDOUT_FILENO);
	close(STDERR_FILENO);
	f_out = NULL;
	f_err = NULL;
	log_syslog = 1;
	return fio_server();
}
Commit	Line	Data
50d16976 JA	1	#include <stdio.h>
50d16976 JA	2	#include <stdlib.h>
142575e6	3	#include <stdarg.h>
50d16976 JA	4	#include <unistd.h>
50d16976 JA	5	#include <limits.h>
50d16976 JA	6	#include <errno.h>
	7	#include <fcntl.h>
	8	#include <sys/poll.h>
50d16976 JA	9	#include <sys/types.h>
50d16976 JA	10	#include <sys/wait.h>
d05c4a03	11	#include <sys/socket.h>
50d16976 JA	12	#include <netinet/in.h>
	13	#include <arpa/inet.h>
	14	#include <netdb.h>
e46d8091	15	#include <syslog.h>
9e22ecb0	16	#include <signal.h>
50d16976 JA	17
50d16976 JA	18	#include "fio.h"
132159a5	19	#include "server.h"
fcee5ff6	20	#include "crc/crc16.h"
802ad4a8	21	#include "ieee754.h"
50d16976	22
132159a5	23	int fio_net_port = 8765;
50d16976	24
009b1be4 JA	25	int exit_backend = 0;
009b1be4 JA	26
46c48f1f	27	static int server_fd = -1;
37db14fe	28
132159a5 JA	29	int fio_send_data(int sk, const void *p, unsigned int len)
132159a5 JA	30	{
794d69ca JA	31	assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_PDU);
794d69ca JA	32
132159a5 JA	33	do {
	34	int ret = send(sk, p, len, 0);
	35
	36	if (ret > 0) {
	37	len -= ret;
	38	if (!len)
	39	break;
	40	p += ret;
	41	continue;
	42	} else if (!ret)
	43	break;
	44	else if (errno == EAGAIN \|\| errno == EINTR)
	45	continue;
	46	} while (!exit_backend);
	47
	48	if (!len)
	49	return 0;
	50
	51	return 1;
	52	}
	53
	54	int fio_recv_data(int sk, void *p, unsigned int len)
	55	{
	56	do {
	57	int ret = recv(sk, p, len, MSG_WAITALL);
	58
	59	if (ret > 0) {
	60	len -= ret;
	61	if (!len)
	62	break;
	63	p += ret;
	64	continue;
	65	} else if (!ret)
	66	break;
	67	else if (errno == EAGAIN \|\| errno == EINTR)
	68	continue;
	69	} while (!exit_backend);
	70
	71	if (!len)
	72	return 0;
	73
	74	return -1;
	75	}
	76
	77	static int verify_convert_cmd(struct fio_net_cmd *cmd)
	78	{
fcee5ff6	79	uint16_t crc;
132159a5	80
fcee5ff6 JA	81	cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
fcee5ff6 JA	82	cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
132159a5	83
fcee5ff6 JA	84	crc = crc16(cmd, FIO_NET_CMD_CRC_SZ);
fcee5ff6 JA	85	if (crc != cmd->cmd_crc16) {
132159a5	86	log_err("fio: server bad crc on command (got %x, wanted %x)\n",
fcee5ff6	87	cmd->cmd_crc16, crc);
132159a5 JA	88	return 1;
	89	}
	90
	91	cmd->version = le16_to_cpu(cmd->version);
	92	cmd->opcode = le16_to_cpu(cmd->opcode);
	93	cmd->flags = le32_to_cpu(cmd->flags);
	94	cmd->serial = le64_to_cpu(cmd->serial);
	95	cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
	96
	97	switch (cmd->version) {
	98	case FIO_SERVER_VER1:
	99	break;
	100	default:
	101	log_err("fio: bad server cmd version %d\n", cmd->version);
	102	return 1;
	103	}
	104
	105	if (cmd->pdu_len > FIO_SERVER_MAX_PDU) {
	106	log_err("fio: command payload too large: %u\n", cmd->pdu_len);
	107	return 1;
	108	}
	109
	110	return 0;
	111	}
	112
a64e88da JA	113	/*
	114	* Read (and defragment, if necessary) incoming commands
	115	*/
70e0c316	116	struct fio_net_cmd *fio_net_recv_cmd(int sk, int block)
132159a5	117	{
a64e88da JA	118	struct fio_net_cmd cmd, *cmdret = NULL;
a64e88da JA	119	size_t cmd_size = 0, pdu_offset = 0;
fcee5ff6	120	uint16_t crc;
a64e88da JA	121	int ret, first = 1;
a64e88da JA	122	void *pdu = NULL;
132159a5	123
a64e88da	124	do {
cc0df00a JA	125	struct pollfd pfd;
	126
	127	pfd.fd = sk;
	128	pfd.events = POLLIN;
	129	ret = 0;
	130	do {
70e0c316 JA	131	int timeo = block ? 100 : 10;
	132
	133	ret = poll(&pfd, 1, timeo);
cc0df00a	134	if (ret < 0) {
5fc58b05 JA	135	if (errno == EINTR)
5fc58b05 JA	136	break;
cc0df00a JA	137	log_err("fio: poll: %s\n", strerror(errno));
cc0df00a JA	138	break;
70e0c316 JA	139	} else if (!ret) {
	140	if (!block)
	141	return NULL;
cc0df00a	142	continue;
70e0c316	143	}
cc0df00a JA	144
	145	if (pfd.revents & POLLIN)
	146	break;
	147	if (pfd.revents & (POLLERR\|POLLHUP)) {
	148	ret = 1;
	149	break;
	150	}
70e0c316	151	} while (ret >= 0 && block);
cc0df00a JA	152
	153	if (ret < 0)
	154	break;
	155
a64e88da JA	156	ret = fio_recv_data(sk, &cmd, sizeof(cmd));
	157	if (ret)
	158	break;
132159a5	159
a64e88da JA	160	/* We have a command, verify it and swap if need be */
	161	ret = verify_convert_cmd(&cmd);
	162	if (ret)
	163	break;
132159a5	164
0b8f30a5 JA	165	if (first) {
	166	/* if this is text, add room for \0 at the end */
	167	cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
	168	assert(!cmdret);
	169	} else
a64e88da	170	cmd_size += cmd.pdu_len;
132159a5	171
a64e88da	172	cmdret = realloc(cmdret, cmd_size);
132159a5	173
a64e88da JA	174	if (first)
	175	memcpy(cmdret, &cmd, sizeof(cmd));
	176	else
	177	assert(cmdret->opcode == cmd.opcode);
	178
	179	if (!cmd.pdu_len)
	180	break;
	181
	182	/* There's payload, get it */
	183	pdu = (void *) cmdret->payload + pdu_offset;
	184	ret = fio_recv_data(sk, pdu, cmd.pdu_len);
	185	if (ret)
	186	break;
	187
	188	/* Verify payload crc */
	189	crc = crc16(pdu, cmd.pdu_len);
	190	if (crc != cmd.pdu_crc16) {
	191	log_err("fio: server bad crc on payload ");
	192	log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
	193	ret = 1;
	194	break;
	195	}
	196
	197	pdu_offset += cmd.pdu_len;
817f06bb JA	198	if (!first)
817f06bb JA	199	cmdret->pdu_len += cmd.pdu_len;
a64e88da JA	200	first = 0;
a64e88da JA	201	} while (cmd.flags & FIO_NET_CMD_F_MORE);
132159a5	202
a64e88da JA	203	if (ret) {
	204	free(cmdret);
	205	cmdret = NULL;
0b8f30a5 JA	206	} else if (cmdret) {
	207	/* zero-terminate text input */
	208	if (cmdret->pdu_len && (cmdret->opcode == FIO_NET_CMD_TEXT \|\|
	209	cmdret->opcode == FIO_NET_CMD_JOB)) {
	210	char buf = (char ) cmdret->payload;
	211
	212	buf[cmdret->pdu_len ] = '\0';
	213	}
	214	/* frag flag is internal */
a64e88da	215	cmdret->flags &= ~FIO_NET_CMD_F_MORE;
0b8f30a5	216	}
a64e88da JA	217
a64e88da JA	218	return cmdret;
132159a5 JA	219	}
	220
	221	void fio_net_cmd_crc(struct fio_net_cmd *cmd)
	222	{
	223	uint32_t pdu_len;
	224
ddcc0b69	225	cmd->cmd_crc16 = __cpu_to_le16(crc16(cmd, FIO_NET_CMD_CRC_SZ));
132159a5 JA	226
	227	pdu_len = le32_to_cpu(cmd->pdu_len);
	228	if (pdu_len)
ddcc0b69	229	cmd->pdu_crc16 = __cpu_to_le16(crc16(cmd->payload, pdu_len));
132159a5 JA	230	}
132159a5 JA	231
a64e88da	232	int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size)
794d69ca JA	233	{
	234	struct fio_net_cmd *cmd;
	235	size_t this_len;
	236	int ret;
	237
	238	do {
	239	this_len = size;
	240	if (this_len > FIO_SERVER_MAX_PDU)
	241	this_len = FIO_SERVER_MAX_PDU;
	242
	243	cmd = malloc(sizeof(*cmd) + this_len);
	244
	245	fio_init_net_cmd(cmd, opcode, buf, this_len);
	246
	247	if (this_len < size)
ddcc0b69	248	cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
794d69ca JA	249
	250	fio_net_cmd_crc(cmd);
	251
	252	ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
	253	free(cmd);
	254	size -= this_len;
	255	buf += this_len;
	256	} while (!ret && size);
	257
	258	return ret;
	259	}
	260
cc0df00a	261	int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t serial)
132159a5 JA	262	{
132159a5 JA	263	struct fio_net_cmd cmd = {
ddcc0b69	264	.version = __cpu_to_le16(FIO_SERVER_VER1),
132159a5	265	.opcode = cpu_to_le16(opcode),
bdab4441	266	.serial = cpu_to_le64(serial),
132159a5 JA	267	};
	268
	269	fio_net_cmd_crc(&cmd);
	270
	271	return fio_send_data(sk, &cmd, sizeof(cmd));
	272	}
	273
9abea48b	274	static int fio_server_send_quit_cmd(void)
437377e1	275	{
46c48f1f	276	dprint(FD_NET, "server: sending quit\n");
cc0df00a	277	return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0);
437377e1 JA	278	}
437377e1 JA	279
0b8f30a5	280	static int handle_job_cmd(struct fio_net_cmd *cmd)
132159a5	281	{
0b8f30a5	282	char buf = (char ) cmd->payload;
a64e88da	283	int ret;
132159a5	284
e6d1c668 JA	285	if (parse_jobs_ini(buf, 1, 0)) {
e6d1c668 JA	286	fio_server_send_quit_cmd();
81179eec	287	return -1;
e6d1c668	288	}
81179eec JA	289
	290	fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0);
	291
	292	ret = exec_run();
9abea48b	293	fio_server_send_quit_cmd();
81179eec JA	294	reset_fio_state();
	295	return ret;
	296	}
	297
	298	static int handle_jobline_cmd(struct fio_net_cmd *cmd)
	299	{
	300	struct cmd_line_pdu pdu = (struct cmd_line_pdu ) cmd->payload;
	301	char *argv[FIO_NET_CMD_JOBLINE_ARGV];
	302	int ret, i;
	303
	304	pdu->argc = le16_to_cpu(pdu->argc);
	305
39e8e016 JA	306	dprint(FD_NET, "server: %d command line args\n", pdu->argc);
	307
	308	for (i = 0; i < pdu->argc; i++) {
81179eec	309	argv[i] = (char *) pdu->argv[i];
39e8e016 JA	310	dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
39e8e016 JA	311	}
81179eec	312
e6d1c668 JA	313	if (parse_cmd_line(pdu->argc, argv)) {
e6d1c668 JA	314	fio_server_send_quit_cmd();
81179eec	315	return -1;
e6d1c668	316	}
81179eec JA	317
	318	fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0);
	319
794d69ca	320	ret = exec_run();
9abea48b	321	fio_server_send_quit_cmd();
794d69ca	322	reset_fio_state();
132159a5 JA	323	return ret;
	324	}
	325
c28e8e8c JA	326	static int handle_probe_cmd(struct fio_net_cmd *cmd)
	327	{
	328	struct cmd_probe_pdu probe;
	329
	330	memset(&probe, 0, sizeof(probe));
	331	gethostname((char *) probe.hostname, sizeof(probe.hostname));
6eb24791 JA	332	#ifdef FIO_BIG_ENDIAN
	333	probe.bigendian = 1;
	334	#endif
81179eec JA	335	probe.fio_major = FIO_MAJOR;
	336	probe.fio_minor = FIO_MINOR;
	337	probe.fio_patch = FIO_PATCH;
c28e8e8c JA	338
	339	return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe));
	340	}
	341
132159a5 JA	342	static int handle_command(struct fio_net_cmd *cmd)
	343	{
	344	int ret;
	345
46c48f1f JA	346	dprint(FD_NET, "server: got opcode %d\n", cmd->opcode);
46c48f1f JA	347
132159a5 JA	348	switch (cmd->opcode) {
132159a5 JA	349	case FIO_NET_CMD_QUIT:
cc0df00a	350	fio_terminate_threads(TERMINATE_ALL);
c28e8e8c	351	return -1;
d7959186	352	case FIO_NET_CMD_EXIT:
132159a5	353	exit_backend = 1;
c28e8e8c	354	return -1;
132159a5	355	case FIO_NET_CMD_JOB:
0b8f30a5	356	ret = handle_job_cmd(cmd);
132159a5	357	break;
81179eec JA	358	case FIO_NET_CMD_JOBLINE:
	359	ret = handle_jobline_cmd(cmd);
	360	break;
c28e8e8c JA	361	case FIO_NET_CMD_PROBE:
	362	ret = handle_probe_cmd(cmd);
	363	break;
132159a5 JA	364	default:
	365	log_err("fio: unknown opcode: %d\n", cmd->opcode);
	366	ret = 1;
	367	}
	368
	369	return ret;
	370	}
	371
70e0c316	372	static int handle_connection(int sk, int block)
132159a5 JA	373	{
	374	struct fio_net_cmd *cmd = NULL;
	375	int ret = 0;
	376
	377	/* read forever */
	378	while (!exit_backend) {
70e0c316	379	cmd = fio_net_recv_cmd(sk, block);
132159a5	380	if (!cmd) {
c28e8e8c	381	ret = -1;
132159a5 JA	382	break;
	383	}
	384
132159a5 JA	385	ret = handle_command(cmd);
	386	if (ret)
	387	break;
	388
	389	free(cmd);
c77a99e7	390	cmd = NULL;
132159a5 JA	391	}
	392
	393	if (cmd)
	394	free(cmd);
	395
	396	return ret;
	397	}
	398
cc0df00a JA	399	void fio_server_idle_loop(void)
	400	{
	401	if (server_fd != -1)
70e0c316	402	handle_connection(server_fd, 0);
cc0df00a JA	403	}
cc0df00a JA	404
50d16976 JA	405	static int accept_loop(int listen_sk)
50d16976 JA	406	{
bb447a27	407	struct sockaddr_in addr;
5ba13ea6	408	fio_socklen_t len = sizeof(addr);
009b1be4	409	struct pollfd pfd;
132159a5	410	int ret, sk, flags, exitval = 0;
50d16976	411
60efd14e JA	412	dprint(FD_NET, "server enter accept loop\n");
60efd14e JA	413
009b1be4 JA	414	flags = fcntl(listen_sk, F_GETFL);
	415	flags \|= O_NONBLOCK;
	416	fcntl(listen_sk, F_SETFL, flags);
50d16976	417	again:
009b1be4 JA	418	pfd.fd = listen_sk;
	419	pfd.events = POLLIN;
	420	do {
	421	ret = poll(&pfd, 1, 100);
	422	if (ret < 0) {
	423	if (errno == EINTR)
	424	break;
fcee5ff6	425	log_err("fio: poll: %s\n", strerror(errno));
009b1be4 JA	426	goto out;
	427	} else if (!ret)
	428	continue;
	429
	430	if (pfd.revents & POLLIN)
	431	break;
	432	} while (!exit_backend);
	433
	434	if (exit_backend)
	435	goto out;
	436
6b976bfc	437	sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
50d16976	438	if (sk < 0) {
690e09ae	439	log_err("fio: accept: %s\n", strerror(errno));
50d16976 JA	440	return -1;
	441	}
	442
bb447a27	443	dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr));
46c48f1f	444
37db14fe JA	445	server_fd = sk;
37db14fe JA	446
70e0c316	447	exitval = handle_connection(sk, 1);
50d16976	448
37db14fe	449	server_fd = -1;
50d16976	450	close(sk);
5c341e9a	451
009b1be4	452	if (!exit_backend)
5c341e9a JA	453	goto again;
5c341e9a JA	454
009b1be4	455	out:
132159a5	456	return exitval;
50d16976 JA	457	}
50d16976 JA	458
142575e6	459	int fio_server_text_output(const char *buf, unsigned int len)
37db14fe	460	{
337d75a8 JA	461	if (server_fd != -1)
	462	return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len);
	463
5037b845	464	return fwrite(buf, len, 1, f_err);
142575e6 JA	465	}
142575e6 JA	466
a64e88da JA	467	static void convert_io_stat(struct io_stat dst, struct io_stat src)
	468	{
	469	dst->max_val = cpu_to_le64(src->max_val);
	470	dst->min_val = cpu_to_le64(src->min_val);
	471	dst->samples = cpu_to_le64(src->samples);
802ad4a8 JA	472
	473	/*
	474	* Encode to IEEE 754 for network transfer
	475	*/
	476	dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
	477	dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f));
a64e88da JA	478	}
	479
	480	static void convert_gs(struct group_run_stats dst, struct group_run_stats src)
	481	{
	482	int i;
	483
	484	for (i = 0; i < 2; i++) {
	485	dst->max_run[i] = cpu_to_le64(src->max_run[i]);
	486	dst->min_run[i] = cpu_to_le64(src->min_run[i]);
	487	dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
	488	dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
	489	dst->io_kb[i] = cpu_to_le64(src->io_kb[i]);
	490	dst->agg[i] = cpu_to_le64(src->agg[i]);
	491	}
	492
	493	dst->kb_base = cpu_to_le32(src->kb_base);
	494	dst->groupid = cpu_to_le32(src->groupid);
	495	}
	496
	497	/*
	498	* Send a CMD_TS, which packs struct thread_stat and group_run_stats
	499	* into a single payload.
	500	*/
	501	void fio_server_send_ts(struct thread_stat ts, struct group_run_stats rs)
	502	{
	503	struct cmd_ts_pdu p;
	504	int i, j;
	505
60efd14e JA	506	dprint(FD_NET, "server sending end stats\n");
60efd14e JA	507
317b3c8b JA	508	memset(&p, 0, sizeof(p));
317b3c8b JA	509
a64e88da JA	510	strcpy(p.ts.name, ts->name);
	511	strcpy(p.ts.verror, ts->verror);
	512	strcpy(p.ts.description, ts->description);
	513
ddcc0b69	514	p.ts.error = cpu_to_le32(ts->error);
a64e88da	515	p.ts.groupid = cpu_to_le32(ts->groupid);
ddcc0b69	516	p.ts.pid = cpu_to_le32(ts->pid);
a64e88da JA	517	p.ts.members = cpu_to_le32(ts->members);
	518
	519	for (i = 0; i < 2; i++) {
	520	convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
	521	convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
	522	convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
	523	convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
	524	}
	525
	526	p.ts.usr_time = cpu_to_le64(ts->usr_time);
	527	p.ts.sys_time = cpu_to_le64(ts->sys_time);
	528	p.ts.ctx = cpu_to_le64(ts->ctx);
	529	p.ts.minf = cpu_to_le64(ts->minf);
	530	p.ts.majf = cpu_to_le64(ts->majf);
	531	p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles);
802ad4a8 JA	532
	533	for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
	534	fio_fp64_t *fp = &p.ts.percentile_list[i];
	535
	536	fp->u.i = __cpu_to_le64(fio_double_to_uint64(fp->u.f));
	537	}
a64e88da JA	538
	539	for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
	540	p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]);
	541	p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]);
	542	p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]);
	543	}
	544
	545	for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
	546	p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]);
	547	p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]);
	548	}
	549
	550	for (i = 0; i < 2; i++)
	551	for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
	552	p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]);
	553
	554	for (i = 0; i < 3; i++) {
	555	p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
93eee04a	556	p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
a64e88da JA	557	}
a64e88da JA	558
93eee04a	559	p.ts.total_submit = cpu_to_le64(ts->total_submit);
a64e88da JA	560	p.ts.total_complete = cpu_to_le64(ts->total_complete);
	561
	562	for (i = 0; i < 2; i++) {
	563	p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
	564	p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
	565	}
	566
	567	p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
	568	p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
	569	p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
ddcc0b69 JA	570	p.ts.first_error = cpu_to_le32(ts->first_error);
ddcc0b69 JA	571	p.ts.kb_base = cpu_to_le32(ts->kb_base);
a64e88da JA	572
	573	convert_gs(&p.rs, rs);
	574
	575	fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p));
	576	}
	577
	578	void fio_server_send_gs(struct group_run_stats *rs)
	579	{
	580	struct group_run_stats gs;
	581
60efd14e JA	582	dprint(FD_NET, "server sending group run stats\n");
60efd14e JA	583
a64e88da JA	584	convert_gs(&gs, rs);
	585	fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs));
	586	}
	587
cf451d1e JA	588	void fio_server_send_status(void)
cf451d1e JA	589	{
1d1f45ae JA	590	struct jobs_eta *je;
	591	size_t size;
	592	void *buf;
cf451d1e JA	593	int i;
cf451d1e JA	594
1d1f45ae JA	595	size = sizeof(je) + thread_number sizeof(char);
	596	buf = malloc(size);
	597	memset(buf, 0, size);
	598	je = buf;
	599
	600	if (!calc_thread_status(je)) {
	601	free(je);
cf451d1e	602	return;
1d1f45ae	603	}
cf451d1e	604
60efd14e JA	605	dprint(FD_NET, "server sending status\n");
60efd14e JA	606
1d1f45ae JA	607	je->nr_running = cpu_to_le32(je->nr_running);
	608	je->nr_ramp = cpu_to_le32(je->nr_ramp);
	609	je->nr_pending = cpu_to_le32(je->nr_pending);
	610	je->files_open = cpu_to_le32(je->files_open);
	611	je->m_rate = cpu_to_le32(je->m_rate);
	612	je->t_rate = cpu_to_le32(je->t_rate);
	613	je->m_iops = cpu_to_le32(je->m_iops);
	614	je->t_iops = cpu_to_le32(je->t_iops);
cf451d1e JA	615
cf451d1e JA	616	for (i = 0; i < 2; i++) {
1d1f45ae JA	617	je->rate[i] = cpu_to_le32(je->rate[i]);
1d1f45ae JA	618	je->iops[i] = cpu_to_le32(je->iops[i]);
cf451d1e JA	619	}
cf451d1e JA	620
1d1f45ae JA	621	je->elapsed_sec = cpu_to_le32(je->nr_running);
1d1f45ae JA	622	je->eta_sec = cpu_to_le64(je->eta_sec);
cf451d1e	623
1d1f45ae JA	624	fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, buf, size);
1d1f45ae JA	625	free(je);
cf451d1e JA	626	}
cf451d1e JA	627
142575e6 JA	628	int fio_server_log(const char *format, ...)
	629	{
	630	char buffer[1024];
	631	va_list args;
82fa6b21	632	size_t len;
142575e6	633
60efd14e JA	634	dprint(FD_NET, "server log\n");
60efd14e JA	635
142575e6	636	va_start(args, format);
82fa6b21	637	len = vsnprintf(buffer, sizeof(buffer), format, args);
142575e6 JA	638	va_end(args);
142575e6 JA	639
82fa6b21	640	return fio_server_text_output(buffer, len);
37db14fe	641	}
e46d8091	642
81179eec JA	643	static int fio_server(void)
	644	{
	645	struct sockaddr_in saddr_in;
	646	struct sockaddr addr;
5ba13ea6	647	fio_socklen_t len;
81179eec JA	648	int sk, opt, ret;
	649
	650	dprint(FD_NET, "starting server\n");
	651
	652	sk = socket(AF_INET, SOCK_STREAM, 0);
	653	if (sk < 0) {
	654	log_err("fio: socket: %s\n", strerror(errno));
	655	return -1;
	656	}
	657
	658	opt = 1;
	659	if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) {
	660	log_err("fio: setsockopt: %s\n", strerror(errno));
	661	return -1;
	662	}
	663	#ifdef SO_REUSEPORT
6eb24791	664	if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) {
81179eec JA	665	log_err("fio: setsockopt: %s\n", strerror(errno));
	666	return -1;
	667	}
	668	#endif
	669
	670	saddr_in.sin_family = AF_INET;
	671	saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
	672	saddr_in.sin_port = htons(fio_net_port);
	673
	674	if (bind(sk, (struct sockaddr *) &saddr_in, sizeof(saddr_in)) < 0) {
	675	log_err("fio: bind: %s\n", strerror(errno));
	676	return -1;
	677	}
	678
	679	if (listen(sk, 1) < 0) {
	680	log_err("fio: listen: %s\n", strerror(errno));
	681	return -1;
	682	}
	683
	684	len = sizeof(addr);
	685	if (getsockname(sk, &addr, &len) < 0) {
	686	log_err("fio: getsockname: %s\n", strerror(errno));
	687	return -1;
	688	}
	689
	690	ret = accept_loop(sk);
	691	close(sk);
	692	return ret;
	693	}
	694
9abea48b JA	695	static void sig_int(int sig)
	696	{
	697	fio_terminate_threads(TERMINATE_ALL);
	698	exit_backend = 1;
	699	}
	700
	701	static void server_signal_handler(void)
	702	{
	703	struct sigaction act;
	704
	705	memset(&act, 0, sizeof(act));
	706	act.sa_handler = sig_int;
	707	act.sa_flags = SA_RESTART;
	708	sigaction(SIGINT, &act, NULL);
	709
	710	memset(&act, 0, sizeof(act));
	711	act.sa_handler = sig_int;
	712	act.sa_flags = SA_RESTART;
	713	sigaction(SIGTERM, &act, NULL);
	714	}
	715
e46d8091 JA	716	int fio_start_server(int daemonize)
	717	{
	718	pid_t pid;
	719
9abea48b JA	720	server_signal_handler();
9abea48b JA	721
e46d8091 JA	722	if (!daemonize)
	723	return fio_server();
	724
	725	openlog("fio", LOG_NDELAY\|LOG_NOWAIT\|LOG_PID, LOG_USER);
	726	pid = fork();
	727	if (pid < 0) {
	728	syslog(LOG_ERR, "failed server fork");
c28e8e8c	729	return -1;
e46d8091 JA	730	} else if (pid)
	731	exit(0);
	732
	733	setsid();
	734	close(STDIN_FILENO);
	735	close(STDOUT_FILENO);
	736	close(STDERR_FILENO);
	737	f_out = NULL;
	738	f_err = NULL;
	739	log_syslog = 1;
	740	return fio_server();
	741	}