[fio.git] / client.c

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

#include "fio.h"
#include "server.h"
#include "crc/crc32.h"
#include "flist.h"

struct fio_client {
	struct flist_head list;
	struct sockaddr_in addr;
	char *hostname;
	int fd;

	int state;
	int skip_newline;

	uint16_t argc;
	char **argv;
};

enum {
	Client_created		= 0,
	Client_connected	= 1,
	Client_started		= 2,
	Client_stopped		= 3,
	Client_exited		= 4,
};

static FLIST_HEAD(client_list);

static int handle_client(struct fio_client *client);

static struct fio_client *find_client_by_fd(int fd)
{
	struct fio_client *client;
	struct flist_head *entry;

	flist_for_each(entry, &client_list) {
		client = flist_entry(entry, struct fio_client, list);

		if (client->fd == fd)
			return client;
	}

	return NULL;
}

static struct fio_client *find_client_by_name(const char *name)
{
	struct fio_client *client;
	struct flist_head *entry;

	flist_for_each(entry, &client_list) {
		client = flist_entry(entry, struct fio_client, list);

		if (!strcmp(name, client->hostname))
			return client;
	}

	return NULL;
}

static void remove_client(struct fio_client *client)
{
	dprint(FD_NET, "client: removed <%s>\n", client->hostname);
	flist_del(&client->list);
	nr_clients--;

	free(client->hostname);
	if (client->argv)
		free(client->argv);

	free(client);
}

static int __fio_client_add_cmd_option(struct fio_client *client,
				       const char *opt)
{
	int index;

	if (client->argc == FIO_NET_CMD_JOBLINE_ARGV) {
		log_err("fio: max cmd line number reached.\n");
		log_err("fio: cmd line <%s> has been ignored.\n", opt);
		return 1;
	}

	index = client->argc++;
	client->argv = realloc(client->argv, sizeof(char *) * client->argc);
	client->argv[index] = strdup(opt);
	dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
	return 0;
}

int fio_client_add_cmd_option(const char *hostname, const char *opt)
{
	struct fio_client *client;

	if (!hostname || !opt)
		return 0;

	client = find_client_by_name(hostname);
	if (!client) {
		log_err("fio: unknown client %s\n", hostname);
		return 1;
	}

	return __fio_client_add_cmd_option(client, opt);
}

void fio_client_add(const char *hostname)
{
	struct fio_client *client;

	dprint(FD_NET, "client: added  <%s>\n", hostname);
	client = malloc(sizeof(*client));
	memset(client, 0, sizeof(*client));

	client->hostname = strdup(hostname);
	client->fd = -1;

	__fio_client_add_cmd_option(client, "fio");

	flist_add(&client->list, &client_list);
	nr_clients++;
}

static int fio_client_connect(struct fio_client *client)
{
	int fd;

	dprint(FD_NET, "client: connect to host %s\n", client->hostname);

	memset(&client->addr, 0, sizeof(client->addr));
	client->addr.sin_family = AF_INET;
	client->addr.sin_port = htons(fio_net_port);

	if (inet_aton(client->hostname, &client->addr.sin_addr) != 1) {
		struct hostent *hent;

		hent = gethostbyname(client->hostname);
		if (!hent) {
			log_err("fio: gethostbyname: %s\n", strerror(errno));
			log_err("fio: failed looking up hostname %s\n",
					client->hostname);
			return 1;
		}

		memcpy(&client->addr.sin_addr, hent->h_addr, 4);
	}

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

	if (connect(fd, (struct sockaddr *) &client->addr, sizeof(client->addr)) < 0) {
		log_err("fio: connect: %s\n", strerror(errno));
		log_err("fio: failed to connect to %s\n", client->hostname);
		return 1;
	}

	client->fd = fd;
	client->state = Client_connected;
	return 0;
}

void fio_clients_terminate(void)
{
	struct flist_head *entry;
	struct fio_client *client;

	dprint(FD_NET, "client: terminate clients\n");

	flist_for_each(entry, &client_list) {
		client = flist_entry(entry, struct fio_client, list);

		fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0);
	}
}

static void sig_int(int sig)
{
	dprint(FD_NET, "client: got sign %d\n", sig);
	fio_clients_terminate();
}

static void client_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);
}

static void probe_client(struct fio_client *client)
{
	dprint(FD_NET, "client: send probe\n");

	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0);
	handle_client(client);
}

static int send_client_cmd_line(struct fio_client *client)
{
	struct cmd_line_pdu *pdu;
	int i, ret;

	dprint(FD_NET, "client: send cmdline %d\n", client->argc);

	pdu = malloc(sizeof(*pdu));
	for (i = 0; i < client->argc; i++)
		strcpy((char *) pdu->argv[i], client->argv[i]);

	pdu->argc = cpu_to_le16(client->argc);
	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, sizeof(*pdu));
	free(pdu);
	return ret;
}

int fio_clients_connect(void)
{
	struct fio_client *client;
	struct flist_head *entry, *tmp;
	int ret;

	dprint(FD_NET, "client: connect all\n");

	client_signal_handler();

	flist_for_each_safe(entry, tmp, &client_list) {
		client = flist_entry(entry, struct fio_client, list);

		ret = fio_client_connect(client);
		if (ret) {
			remove_client(client);
			continue;
		}

		probe_client(client);

		if (client->argc > 1)
			send_client_cmd_line(client);
	}

	return !nr_clients;
}

/*
 * Send file contents to server backend. We could use sendfile(), but to remain
 * more portable lets just read/write the darn thing.
 */
static int fio_client_send_ini(struct fio_client *client, const char *filename)
{
	struct stat sb;
	char *p, *buf;
	off_t len;
	int fd, ret;

	dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);

	fd = open(filename, O_RDONLY);
	if (fd < 0) {
		log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
		return 1;
	}

	if (fstat(fd, &sb) < 0) {
		log_err("fio: job file stat: %s\n", strerror(errno));
		return 1;
	}

	buf = malloc(sb.st_size);

	len = sb.st_size;
	p = buf;
	do {
		ret = read(fd, p, len);
		if (ret > 0) {
			len -= ret;
			if (!len)
				break;
			p += ret;
			continue;
		} else if (!ret)
			break;
		else if (errno == EAGAIN || errno == EINTR)
			continue;
	} while (1);

	if (len) {
		log_err("fio: failed reading job file %s\n", filename);
		return 1;
	}

	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size);
	free(buf);
	return ret;
}

int fio_clients_send_ini(const char *filename)
{
	struct fio_client *client;
	struct flist_head *entry, *tmp;

	flist_for_each_safe(entry, tmp, &client_list) {
		client = flist_entry(entry, struct fio_client, list);

		if (fio_client_send_ini(client, filename))
			remove_client(client);
	}

	return !nr_clients;
}

static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
{
	dst->max_val	= le64_to_cpu(src->max_val);
	dst->min_val	= le64_to_cpu(src->min_val);
	dst->samples	= le64_to_cpu(src->samples);

	/*
	 * Floats arrive as IEEE 754 encoded uint64_t, convert back to double
	 */
	dst->mean.u.f	= fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
	dst->S.u.f	= fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
}

static void convert_ts(struct thread_stat *dst, struct thread_stat *src)
{
	int i, j;

	dst->error	= le32_to_cpu(src->error);
	dst->groupid	= le32_to_cpu(src->groupid);
	dst->pid	= le32_to_cpu(src->pid);
	dst->members	= le32_to_cpu(src->members);

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

	dst->usr_time		= le64_to_cpu(src->usr_time);
	dst->sys_time		= le64_to_cpu(src->sys_time);
	dst->ctx		= le64_to_cpu(src->ctx);
	dst->minf		= le64_to_cpu(src->minf);
	dst->majf		= le64_to_cpu(src->majf);
	dst->clat_percentiles	= le64_to_cpu(src->clat_percentiles);

	for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
		fio_fp64_t *fps = &src->percentile_list[i];
		fio_fp64_t *fpd = &dst->percentile_list[i];

		fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
	}

	for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
		dst->io_u_map[i]	= le32_to_cpu(src->io_u_map[i]);
		dst->io_u_submit[i]	= le32_to_cpu(src->io_u_submit[i]);
		dst->io_u_complete[i]	= le32_to_cpu(src->io_u_complete[i]);
	}

	for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
		dst->io_u_lat_u[i]	= le32_to_cpu(src->io_u_lat_u[i]);
		dst->io_u_lat_m[i]	= le32_to_cpu(src->io_u_lat_m[i]);
	}

	for (i = 0; i < 2; i++)
		for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
			dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);

	for (i = 0; i < 3; i++) {
		dst->total_io_u[i]	= le64_to_cpu(src->total_io_u[i]);
		dst->short_io_u[i]	= le64_to_cpu(src->short_io_u[i]);
	}

	dst->total_submit	= le64_to_cpu(src->total_submit);
	dst->total_complete	= le64_to_cpu(src->total_complete);

	for (i = 0; i < 2; i++) {
		dst->io_bytes[i]	= le64_to_cpu(src->io_bytes[i]);
		dst->runtime[i]		= le64_to_cpu(src->runtime[i]);
	}

	dst->total_run_time	= le64_to_cpu(src->total_run_time);
	dst->continue_on_error	= le16_to_cpu(src->continue_on_error);
	dst->total_err_count	= le64_to_cpu(src->total_err_count);
	dst->first_error	= le32_to_cpu(src->first_error);
	dst->kb_base		= le32_to_cpu(src->kb_base);
}

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]		= le64_to_cpu(src->max_run[i]);
		dst->min_run[i]		= le64_to_cpu(src->min_run[i]);
		dst->max_bw[i]		= le64_to_cpu(src->max_bw[i]);
		dst->min_bw[i]		= le64_to_cpu(src->min_bw[i]);
		dst->io_kb[i]		= le64_to_cpu(src->io_kb[i]);
		dst->agg[i]		= le64_to_cpu(src->agg[i]);
	}

	dst->kb_base	= le32_to_cpu(src->kb_base);
	dst->groupid	= le32_to_cpu(src->groupid);
}

static void handle_ts(struct fio_net_cmd *cmd)
{
	struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;

	convert_ts(&p->ts, &p->ts);
	convert_gs(&p->rs, &p->rs);

	show_thread_status(&p->ts, &p->rs);
}

static void handle_gs(struct fio_net_cmd *cmd)
{
	struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;

	convert_gs(gs, gs);
	show_group_stats(gs);
}

static void handle_eta(struct fio_net_cmd *cmd)
{
	struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
	int i;

	je->nr_running		= le32_to_cpu(je->nr_running);
	je->nr_ramp		= le32_to_cpu(je->nr_ramp);
	je->nr_pending		= le32_to_cpu(je->nr_pending);
	je->files_open		= le32_to_cpu(je->files_open);
	je->m_rate		= le32_to_cpu(je->m_rate);
	je->t_rate		= le32_to_cpu(je->t_rate);
	je->m_iops		= le32_to_cpu(je->m_iops);
	je->t_iops		= le32_to_cpu(je->t_iops);

	for (i = 0; i < 2; i++) {
		je->rate[i]	= le32_to_cpu(je->rate[i]);
		je->iops[i]	= le32_to_cpu(je->iops[i]);
	}

	je->elapsed_sec		= le32_to_cpu(je->nr_running);
	je->eta_sec		= le64_to_cpu(je->eta_sec);

	display_thread_status(je);
}

static void handle_probe(struct fio_net_cmd *cmd)
{
	struct cmd_probe_pdu *probe = (struct cmd_probe_pdu *) cmd->payload;

	log_info("Probe: hostname=%s, be=%u, fio ver %u.%u.%u\n",
		probe->hostname, probe->bigendian, probe->fio_major,
		probe->fio_minor, probe->fio_patch);
}

static int handle_client(struct fio_client *client)
{
	struct fio_net_cmd *cmd;

	dprint(FD_NET, "client: handle %s\n", client->hostname);

	cmd = fio_net_recv_cmd(client->fd);
	if (!cmd)
		return 0;

	dprint(FD_NET, "client: got cmd op %d from %s\n",
					cmd->opcode, client->hostname);

	switch (cmd->opcode) {
	case FIO_NET_CMD_QUIT:
		remove_client(client);
		free(cmd);
		break;
	case FIO_NET_CMD_TEXT: {
		const char *buf = (const char *) cmd->payload;
		int fio_unused ret;

		if (!client->skip_newline)
			fprintf(f_out, "<%s> ", client->hostname);
		ret = fwrite(buf, cmd->pdu_len, 1, f_out);
		fflush(f_out);
		client->skip_newline = strchr(buf, '\n') == NULL;
		free(cmd);
		break;
		}
	case FIO_NET_CMD_TS:
		handle_ts(cmd);
		free(cmd);
		break;
	case FIO_NET_CMD_GS:
		handle_gs(cmd);
		free(cmd);
		break;
	case FIO_NET_CMD_ETA:
		handle_eta(cmd);
		free(cmd);
		break;
	case FIO_NET_CMD_PROBE:
		handle_probe(cmd);
		free(cmd);
		break;
	case FIO_NET_CMD_START:
		client->state = Client_started;
		free(cmd);
		break;
	case FIO_NET_CMD_STOP:
		client->state = Client_stopped;
		free(cmd);
		break;
	default:
		log_err("fio: unknown client op: %d\n", cmd->opcode);
		free(cmd);
		break;
	}

	return 1;
}

int fio_handle_clients(void)
{
	struct fio_client *client;
	struct flist_head *entry;
	struct pollfd *pfds;
	int i, ret = 0;

	pfds = malloc(nr_clients * sizeof(struct pollfd));

	while (!exit_backend && nr_clients) {
		i = 0;
		flist_for_each(entry, &client_list) {
			client = flist_entry(entry, struct fio_client, list);

			pfds[i].fd = client->fd;
			pfds[i].events = POLLIN;
			i++;
		}

		assert(i == nr_clients);

		do {
			ret = poll(pfds, nr_clients, 100);
			if (ret < 0) {
				if (errno == EINTR)
					continue;
				log_err("fio: poll clients: %s\n", strerror(errno));
				break;
			} else if (!ret)
				continue;
		} while (ret <= 0);

		for (i = 0; i < nr_clients; i++) {
			if (!(pfds[i].revents & POLLIN))
				continue;

			client = find_client_by_fd(pfds[i].fd);
			if (!client) {
				log_err("fio: unknown client\n");
				continue;
			}
			if (!handle_client(client)) {
				log_info("client: host=%s disconnected\n",
						client->hostname);
				remove_client(client);
			}
		}
	}

	free(pfds);
	return 0;
}
Commit	Line	Data
132159a5 JA	1	#include <stdio.h>
	2	#include <stdlib.h>
	3	#include <unistd.h>
	4	#include <limits.h>
	5	#include <errno.h>
	6	#include <fcntl.h>
	7	#include <sys/poll.h>
	8	#include <sys/types.h>
	9	#include <sys/stat.h>
	10	#include <sys/wait.h>
d05c4a03	11	#include <sys/socket.h>
132159a5 JA	12	#include <netinet/in.h>
	13	#include <arpa/inet.h>
	14	#include <netdb.h>
9e22ecb0	15	#include <signal.h>
132159a5 JA	16
	17	#include "fio.h"
	18	#include "server.h"
	19	#include "crc/crc32.h"
b66570dc	20	#include "flist.h"
132159a5	21
b66570dc JA	22	struct fio_client {
	23	struct flist_head list;
	24	struct sockaddr_in addr;
	25	char *hostname;
	26	int fd;
81179eec JA	27
81179eec JA	28	int state;
17dd1764	29	int skip_newline;
81179eec JA	30
	31	uint16_t argc;
	32	char **argv;
	33	};
	34
	35	enum {
5c2857f9	36	Client_created = 0,
81179eec JA	37	Client_connected = 1,
	38	Client_started = 2,
	39	Client_stopped = 3,
5c2857f9	40	Client_exited = 4,
b66570dc JA	41	};
	42
	43	static FLIST_HEAD(client_list);
b66570dc	44
e951bdc4	45	static int handle_client(struct fio_client *client);
0b8f30a5	46
b66570dc JA	47	static struct fio_client *find_client_by_fd(int fd)
	48	{
	49	struct fio_client *client;
	50	struct flist_head *entry;
	51
	52	flist_for_each(entry, &client_list) {
	53	client = flist_entry(entry, struct fio_client, list);
	54
	55	if (client->fd == fd)
	56	return client;
	57	}
	58
	59	return NULL;
	60	}
	61
	62	static struct fio_client find_client_by_name(const char name)
	63	{
	64	struct fio_client *client;
	65	struct flist_head *entry;
	66
	67	flist_for_each(entry, &client_list) {
	68	client = flist_entry(entry, struct fio_client, list);
	69
	70	if (!strcmp(name, client->hostname))
	71	return client;
	72	}
	73
	74	return NULL;
	75	}
	76
	77	static void remove_client(struct fio_client *client)
	78	{
39e8e016	79	dprint(FD_NET, "client: removed <%s>\n", client->hostname);
b66570dc JA	80	flist_del(&client->list);
b66570dc JA	81	nr_clients--;
81179eec	82
b66570dc	83	free(client->hostname);
81179eec JA	84	if (client->argv)
	85	free(client->argv);
	86
b66570dc JA	87	free(client);
b66570dc JA	88	}
132159a5	89
7a4b8240 JA	90	static int __fio_client_add_cmd_option(struct fio_client *client,
7a4b8240 JA	91	const char *opt)
81179eec	92	{
39e8e016 JA	93	int index;
39e8e016 JA	94
7a4b8240 JA	95	if (client->argc == FIO_NET_CMD_JOBLINE_ARGV) {
	96	log_err("fio: max cmd line number reached.\n");
	97	log_err("fio: cmd line <%s> has been ignored.\n", opt);
	98	return 1;
	99	}
	100
39e8e016	101	index = client->argc++;
81179eec	102	client->argv = realloc(client->argv, sizeof(char ) client->argc);
39e8e016 JA	103	client->argv[index] = strdup(opt);
39e8e016 JA	104	dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
7a4b8240	105	return 0;
81179eec JA	106	}
81179eec JA	107
7a4b8240	108	int fio_client_add_cmd_option(const char hostname, const char opt)
81179eec JA	109	{
	110	struct fio_client *client;
	111
	112	if (!hostname \|\| !opt)
7a4b8240	113	return 0;
81179eec JA	114
	115	client = find_client_by_name(hostname);
	116	if (!client) {
	117	log_err("fio: unknown client %s\n", hostname);
7a4b8240	118	return 1;
81179eec JA	119	}
81179eec JA	120
7a4b8240	121	return __fio_client_add_cmd_option(client, opt);
81179eec JA	122	}
81179eec JA	123
a37f69b7	124	void fio_client_add(const char *hostname)
132159a5	125	{
b66570dc	126	struct fio_client *client;
132159a5	127
39e8e016	128	dprint(FD_NET, "client: added <%s>\n", hostname);
b66570dc	129	client = malloc(sizeof(*client));
a37f69b7	130	memset(client, 0, sizeof(*client));
81179eec	131
a37f69b7 JA	132	client->hostname = strdup(hostname);
a37f69b7 JA	133	client->fd = -1;
81179eec JA	134
	135	__fio_client_add_cmd_option(client, "fio");
	136
a37f69b7 JA	137	flist_add(&client->list, &client_list);
	138	nr_clients++;
	139	}
	140
	141	static int fio_client_connect(struct fio_client *client)
	142	{
	143	int fd;
132159a5	144
39e8e016	145	dprint(FD_NET, "client: connect to host %s\n", client->hostname);
46c48f1f	146
b66570dc JA	147	memset(&client->addr, 0, sizeof(client->addr));
	148	client->addr.sin_family = AF_INET;
	149	client->addr.sin_port = htons(fio_net_port);
	150
a37f69b7	151	if (inet_aton(client->hostname, &client->addr.sin_addr) != 1) {
132159a5 JA	152	struct hostent *hent;
132159a5 JA	153
a37f69b7	154	hent = gethostbyname(client->hostname);
132159a5 JA	155	if (!hent) {
132159a5 JA	156	log_err("fio: gethostbyname: %s\n", strerror(errno));
e951bdc4 JA	157	log_err("fio: failed looking up hostname %s\n",
e951bdc4 JA	158	client->hostname);
132159a5 JA	159	return 1;
	160	}
	161
b66570dc	162	memcpy(&client->addr.sin_addr, hent->h_addr, 4);
132159a5 JA	163	}
	164
	165	fd = socket(AF_INET, SOCK_STREAM, 0);
	166	if (fd < 0) {
	167	log_err("fio: socket: %s\n", strerror(errno));
	168	return 1;
	169	}
	170
b66570dc	171	if (connect(fd, (struct sockaddr *) &client->addr, sizeof(client->addr)) < 0) {
132159a5	172	log_err("fio: connect: %s\n", strerror(errno));
cdf54d85	173	log_err("fio: failed to connect to %s\n", client->hostname);
132159a5 JA	174	return 1;
	175	}
	176
b66570dc	177	client->fd = fd;
81179eec	178	client->state = Client_connected;
132159a5 JA	179	return 0;
	180	}
	181
cc0df00a JA	182	void fio_clients_terminate(void)
	183	{
	184	struct flist_head *entry;
	185	struct fio_client *client;
	186
60efd14e JA	187	dprint(FD_NET, "client: terminate clients\n");
60efd14e JA	188
cc0df00a JA	189	flist_for_each(entry, &client_list) {
	190	client = flist_entry(entry, struct fio_client, list);
	191
	192	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0);
	193	}
	194	}
	195
	196	static void sig_int(int sig)
	197	{
60efd14e	198	dprint(FD_NET, "client: got sign %d\n", sig);
cc0df00a JA	199	fio_clients_terminate();
	200	}
	201
	202	static void client_signal_handler(void)
	203	{
	204	struct sigaction act;
	205
	206	memset(&act, 0, sizeof(act));
	207	act.sa_handler = sig_int;
	208	act.sa_flags = SA_RESTART;
	209	sigaction(SIGINT, &act, NULL);
	210
	211	memset(&act, 0, sizeof(act));
	212	act.sa_handler = sig_int;
	213	act.sa_flags = SA_RESTART;
	214	sigaction(SIGTERM, &act, NULL);
	215	}
	216
0b8f30a5 JA	217	static void probe_client(struct fio_client *client)
0b8f30a5 JA	218	{
60efd14e JA	219	dprint(FD_NET, "client: send probe\n");
60efd14e JA	220
0b8f30a5	221	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0);
e951bdc4	222	handle_client(client);
0b8f30a5 JA	223	}
0b8f30a5 JA	224
81179eec JA	225	static int send_client_cmd_line(struct fio_client *client)
	226	{
	227	struct cmd_line_pdu *pdu;
	228	int i, ret;
	229
39e8e016	230	dprint(FD_NET, "client: send cmdline %d\n", client->argc);
60efd14e	231
81179eec JA	232	pdu = malloc(sizeof(*pdu));
	233	for (i = 0; i < client->argc; i++)
	234	strcpy((char *) pdu->argv[i], client->argv[i]);
	235
	236	pdu->argc = cpu_to_le16(client->argc);
	237	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, sizeof(*pdu));
	238	free(pdu);
	239	return ret;
	240	}
	241
a37f69b7 JA	242	int fio_clients_connect(void)
	243	{
	244	struct fio_client *client;
	245	struct flist_head entry, tmp;
	246	int ret;
	247
60efd14e JA	248	dprint(FD_NET, "client: connect all\n");
60efd14e JA	249
cc0df00a JA	250	client_signal_handler();
cc0df00a JA	251
a37f69b7 JA	252	flist_for_each_safe(entry, tmp, &client_list) {
	253	client = flist_entry(entry, struct fio_client, list);
	254
	255	ret = fio_client_connect(client);
0b8f30a5	256	if (ret) {
a37f69b7	257	remove_client(client);
0b8f30a5 JA	258	continue;
	259	}
	260
	261	probe_client(client);
81179eec JA	262
	263	if (client->argc > 1)
	264	send_client_cmd_line(client);
a37f69b7 JA	265	}
	266
	267	return !nr_clients;
	268	}
	269
132159a5 JA	270	/*
	271	* Send file contents to server backend. We could use sendfile(), but to remain
	272	* more portable lets just read/write the darn thing.
	273	*/
a37f69b7	274	static int fio_client_send_ini(struct fio_client client, const char filename)
132159a5 JA	275	{
	276	struct stat sb;
	277	char p, buf;
	278	off_t len;
	279	int fd, ret;
	280
46c48f1f JA	281	dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
46c48f1f JA	282
132159a5 JA	283	fd = open(filename, O_RDONLY);
132159a5 JA	284	if (fd < 0) {
e951bdc4	285	log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
132159a5 JA	286	return 1;
	287	}
	288
	289	if (fstat(fd, &sb) < 0) {
	290	log_err("fio: job file stat: %s\n", strerror(errno));
	291	return 1;
	292	}
	293
	294	buf = malloc(sb.st_size);
	295
	296	len = sb.st_size;
	297	p = buf;
	298	do {
	299	ret = read(fd, p, len);
	300	if (ret > 0) {
	301	len -= ret;
	302	if (!len)
	303	break;
	304	p += ret;
	305	continue;
	306	} else if (!ret)
	307	break;
	308	else if (errno == EAGAIN \|\| errno == EINTR)
	309	continue;
	310	} while (1);
	311
0b8f30a5 JA	312	if (len) {
	313	log_err("fio: failed reading job file %s\n", filename);
	314	return 1;
	315	}
	316
81179eec	317	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size);
132159a5 JA	318	free(buf);
	319	return ret;
	320	}
37db14fe	321
a37f69b7 JA	322	int fio_clients_send_ini(const char *filename)
	323	{
	324	struct fio_client *client;
	325	struct flist_head entry, tmp;
	326
	327	flist_for_each_safe(entry, tmp, &client_list) {
	328	client = flist_entry(entry, struct fio_client, list);
	329
	330	if (fio_client_send_ini(client, filename))
	331	remove_client(client);
	332	}
	333
	334	return !nr_clients;
	335	}
	336
a64e88da JA	337	static void convert_io_stat(struct io_stat dst, struct io_stat src)
	338	{
	339	dst->max_val = le64_to_cpu(src->max_val);
	340	dst->min_val = le64_to_cpu(src->min_val);
	341	dst->samples = le64_to_cpu(src->samples);
802ad4a8 JA	342
	343	/*
	344	* Floats arrive as IEEE 754 encoded uint64_t, convert back to double
	345	*/
	346	dst->mean.u.f = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
	347	dst->S.u.f = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
a64e88da JA	348	}
	349
	350	static void convert_ts(struct thread_stat dst, struct thread_stat src)
	351	{
	352	int i, j;
	353
	354	dst->error = le32_to_cpu(src->error);
	355	dst->groupid = le32_to_cpu(src->groupid);
	356	dst->pid = le32_to_cpu(src->pid);
	357	dst->members = le32_to_cpu(src->members);
	358
	359	for (i = 0; i < 2; i++) {
	360	convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
	361	convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
	362	convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
	363	convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
	364	}
	365
	366	dst->usr_time = le64_to_cpu(src->usr_time);
	367	dst->sys_time = le64_to_cpu(src->sys_time);
	368	dst->ctx = le64_to_cpu(src->ctx);
	369	dst->minf = le64_to_cpu(src->minf);
	370	dst->majf = le64_to_cpu(src->majf);
	371	dst->clat_percentiles = le64_to_cpu(src->clat_percentiles);
802ad4a8 JA	372
	373	for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
	374	fio_fp64_t *fps = &src->percentile_list[i];
	375	fio_fp64_t *fpd = &dst->percentile_list[i];
	376
	377	fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
	378	}
a64e88da JA	379
	380	for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
	381	dst->io_u_map[i] = le32_to_cpu(src->io_u_map[i]);
	382	dst->io_u_submit[i] = le32_to_cpu(src->io_u_submit[i]);
	383	dst->io_u_complete[i] = le32_to_cpu(src->io_u_complete[i]);
	384	}
	385
	386	for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
	387	dst->io_u_lat_u[i] = le32_to_cpu(src->io_u_lat_u[i]);
	388	dst->io_u_lat_m[i] = le32_to_cpu(src->io_u_lat_m[i]);
	389	}
	390
	391	for (i = 0; i < 2; i++)
	392	for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
	393	dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
	394
	395	for (i = 0; i < 3; i++) {
	396	dst->total_io_u[i] = le64_to_cpu(src->total_io_u[i]);
93eee04a	397	dst->short_io_u[i] = le64_to_cpu(src->short_io_u[i]);
a64e88da JA	398	}
	399
	400	dst->total_submit = le64_to_cpu(src->total_submit);
	401	dst->total_complete = le64_to_cpu(src->total_complete);
	402
	403	for (i = 0; i < 2; i++) {
	404	dst->io_bytes[i] = le64_to_cpu(src->io_bytes[i]);
	405	dst->runtime[i] = le64_to_cpu(src->runtime[i]);
	406	}
	407
	408	dst->total_run_time = le64_to_cpu(src->total_run_time);
	409	dst->continue_on_error = le16_to_cpu(src->continue_on_error);
	410	dst->total_err_count = le64_to_cpu(src->total_err_count);
ddcc0b69 JA	411	dst->first_error = le32_to_cpu(src->first_error);
ddcc0b69 JA	412	dst->kb_base = le32_to_cpu(src->kb_base);
a64e88da JA	413	}
	414
	415	static void convert_gs(struct group_run_stats dst, struct group_run_stats src)
	416	{
	417	int i;
	418
	419	for (i = 0; i < 2; i++) {
	420	dst->max_run[i] = le64_to_cpu(src->max_run[i]);
	421	dst->min_run[i] = le64_to_cpu(src->min_run[i]);
	422	dst->max_bw[i] = le64_to_cpu(src->max_bw[i]);
	423	dst->min_bw[i] = le64_to_cpu(src->min_bw[i]);
	424	dst->io_kb[i] = le64_to_cpu(src->io_kb[i]);
	425	dst->agg[i] = le64_to_cpu(src->agg[i]);
	426	}
	427
	428	dst->kb_base = le32_to_cpu(src->kb_base);
	429	dst->groupid = le32_to_cpu(src->groupid);
	430	}
	431
	432	static void handle_ts(struct fio_net_cmd *cmd)
	433	{
	434	struct cmd_ts_pdu p = (struct cmd_ts_pdu ) cmd->payload;
	435
	436	convert_ts(&p->ts, &p->ts);
	437	convert_gs(&p->rs, &p->rs);
	438
	439	show_thread_status(&p->ts, &p->rs);
	440	}
	441
	442	static void handle_gs(struct fio_net_cmd *cmd)
	443	{
	444	struct group_run_stats gs = (struct group_run_stats ) cmd->payload;
	445
	446	convert_gs(gs, gs);
	447	show_group_stats(gs);
	448	}
	449
cf451d1e JA	450	static void handle_eta(struct fio_net_cmd *cmd)
	451	{
	452	struct jobs_eta je = (struct jobs_eta ) cmd->payload;
	453	int i;
	454
	455	je->nr_running = le32_to_cpu(je->nr_running);
	456	je->nr_ramp = le32_to_cpu(je->nr_ramp);
	457	je->nr_pending = le32_to_cpu(je->nr_pending);
	458	je->files_open = le32_to_cpu(je->files_open);
	459	je->m_rate = le32_to_cpu(je->m_rate);
	460	je->t_rate = le32_to_cpu(je->t_rate);
	461	je->m_iops = le32_to_cpu(je->m_iops);
	462	je->t_iops = le32_to_cpu(je->t_iops);
	463
	464	for (i = 0; i < 2; i++) {
	465	je->rate[i] = le32_to_cpu(je->rate[i]);
	466	je->iops[i] = le32_to_cpu(je->iops[i]);
	467	}
	468
	469	je->elapsed_sec = le32_to_cpu(je->nr_running);
	470	je->eta_sec = le64_to_cpu(je->eta_sec);
	471
	472	display_thread_status(je);
	473	}
	474
2e03b4b2 JA	475	static void handle_probe(struct fio_net_cmd *cmd)
	476	{
	477	struct cmd_probe_pdu probe = (struct cmd_probe_pdu ) cmd->payload;
	478
6eb24791 JA	479	log_info("Probe: hostname=%s, be=%u, fio ver %u.%u.%u\n",
	480	probe->hostname, probe->bigendian, probe->fio_major,
	481	probe->fio_minor, probe->fio_patch);
2e03b4b2 JA	482	}
2e03b4b2 JA	483
e951bdc4	484	static int handle_client(struct fio_client *client)
37db14fe JA	485	{
	486	struct fio_net_cmd *cmd;
	487
60efd14e JA	488	dprint(FD_NET, "client: handle %s\n", client->hostname);
60efd14e JA	489
e951bdc4 JA	490	cmd = fio_net_recv_cmd(client->fd);
	491	if (!cmd)
	492	return 0;
c2c94585	493
e951bdc4	494	dprint(FD_NET, "client: got cmd op %d from %s\n",
c2c94585	495	cmd->opcode, client->hostname);
46c48f1f	496
e951bdc4 JA	497	switch (cmd->opcode) {
	498	case FIO_NET_CMD_QUIT:
	499	remove_client(client);
	500	free(cmd);
	501	break;
	502	case FIO_NET_CMD_TEXT: {
	503	const char buf = (const char ) cmd->payload;
	504	int fio_unused ret;
	505
	506	if (!client->skip_newline)
	507	fprintf(f_out, "<%s> ", client->hostname);
	508	ret = fwrite(buf, cmd->pdu_len, 1, f_out);
	509	fflush(f_out);
	510	client->skip_newline = strchr(buf, '\n') == NULL;
	511	free(cmd);
	512	break;
37db14fe	513	}
e951bdc4 JA	514	case FIO_NET_CMD_TS:
	515	handle_ts(cmd);
	516	free(cmd);
	517	break;
	518	case FIO_NET_CMD_GS:
	519	handle_gs(cmd);
	520	free(cmd);
	521	break;
	522	case FIO_NET_CMD_ETA:
	523	handle_eta(cmd);
	524	free(cmd);
	525	break;
	526	case FIO_NET_CMD_PROBE:
	527	handle_probe(cmd);
	528	free(cmd);
	529	break;
	530	case FIO_NET_CMD_START:
	531	client->state = Client_started;
	532	free(cmd);
	533	break;
	534	case FIO_NET_CMD_STOP:
	535	client->state = Client_stopped;
	536	free(cmd);
	537	break;
	538	default:
	539	log_err("fio: unknown client op: %d\n", cmd->opcode);
	540	free(cmd);
	541	break;
37db14fe JA	542	}
37db14fe JA	543
e951bdc4	544	return 1;
37db14fe	545	}
b66570dc JA	546
	547	int fio_handle_clients(void)
	548	{
	549	struct fio_client *client;
	550	struct flist_head *entry;
	551	struct pollfd *pfds;
82a4be1b	552	int i, ret = 0;
b66570dc JA	553
	554	pfds = malloc(nr_clients * sizeof(struct pollfd));
	555
82a4be1b JA	556	while (!exit_backend && nr_clients) {
	557	i = 0;
	558	flist_for_each(entry, &client_list) {
	559	client = flist_entry(entry, struct fio_client, list);
b66570dc	560
82a4be1b JA	561	pfds[i].fd = client->fd;
	562	pfds[i].events = POLLIN;
	563	i++;
	564	}
	565
	566	assert(i == nr_clients);
b66570dc	567
5c2857f9 JA	568	do {
	569	ret = poll(pfds, nr_clients, 100);
	570	if (ret < 0) {
	571	if (errno == EINTR)
	572	continue;
	573	log_err("fio: poll clients: %s\n", strerror(errno));
	574	break;
	575	} else if (!ret)
b66570dc	576	continue;
5c2857f9	577	} while (ret <= 0);
b66570dc JA	578
	579	for (i = 0; i < nr_clients; i++) {
	580	if (!(pfds[i].revents & POLLIN))
	581	continue;
	582
	583	client = find_client_by_fd(pfds[i].fd);
	584	if (!client) {
	585	log_err("fio: unknown client\n");
	586	continue;
	587	}
e951bdc4	588	if (!handle_client(client)) {
28d3ab07 JA	589	log_info("client: host=%s disconnected\n",
	590	client->hostname);
	591	remove_client(client);
	592	}
b66570dc JA	593	}
	594	}
	595
	596	free(pfds);
b66570dc JA	597	return 0;
b66570dc JA	598	}