[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/mman.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.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;

	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, int one);

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, "removed client <%s>\n", client->hostname);
	flist_del(&client->list);
	nr_clients--;

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

	free(client);
}

static void __fio_client_add_cmd_option(struct fio_client *client,
					const char *opt)
{
	client->argc++;
	client->argv = realloc(client->argv, sizeof(char *) * client->argc);
	client->argv[client->argc - 1] = strdup(opt);
}

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

	if (!hostname || !opt)
		return;

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

	__fio_client_add_cmd_option(client, opt);
}

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

	dprint(FD_NET, "added client <%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, "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));
			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;

	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)
{
	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)
{
	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0);
	handle_client(client, 1);
}

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

	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;

	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 open: %s\n", 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);
	/* FIXME */
	dst->mean	= __le64_to_cpu(src->mean);
	dst->S		= __le64_to_cpu(src->S);
}

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);
	dst->percentile_list	= NULL;

	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, fio ver %u.%u.%u\n", probe->hostname,
			probe->fio_major, probe->fio_minor, probe->fio_patch);
}

static int handle_client(struct fio_client *client, int one)
{
	struct fio_net_cmd *cmd;
	int done = 0;

	while ((cmd = fio_net_recv_cmd(client->fd, 1)) != NULL) {
		dprint(FD_NET, "%s: got cmd op %d\n", client->hostname,
							cmd->opcode);

		switch (cmd->opcode) {
		case FIO_NET_CMD_QUIT:
			remove_client(client);
			free(cmd);
			done = 1;
			break;
		case FIO_NET_CMD_TEXT:
			fprintf(f_out, "Client <%s>: ", client->hostname);
			fwrite(cmd->payload, cmd->pdu_len, 1, f_out);
			fflush(f_out);
			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;
		}

		if (done || one)
			break;
	}

	return 0;
}

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;
			}
			handle_client(client, 0);
		}
	}

	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>
	11	#include <sys/mman.h>
	12	#include <netinet/in.h>
	13	#include <arpa/inet.h>
	14	#include <netdb.h>
	15
	16	#include "fio.h"
	17	#include "server.h"
	18	#include "crc/crc32.h"
b66570dc	19	#include "flist.h"
132159a5	20
b66570dc JA	21	struct fio_client {
	22	struct flist_head list;
	23	struct sockaddr_in addr;
	24	char *hostname;
	25	int fd;
81179eec JA	26
	27	int state;
	28
	29	uint16_t argc;
	30	char **argv;
	31	};
	32
	33	enum {
5c2857f9	34	Client_created = 0,
81179eec JA	35	Client_connected = 1,
	36	Client_started = 2,
	37	Client_stopped = 3,
5c2857f9	38	Client_exited = 4,
b66570dc JA	39	};
	40
	41	static FLIST_HEAD(client_list);
b66570dc	42
0b8f30a5 JA	43	static int handle_client(struct fio_client *client, int one);
0b8f30a5 JA	44
b66570dc JA	45	static struct fio_client *find_client_by_fd(int fd)
	46	{
	47	struct fio_client *client;
	48	struct flist_head *entry;
	49
	50	flist_for_each(entry, &client_list) {
	51	client = flist_entry(entry, struct fio_client, list);
	52
	53	if (client->fd == fd)
	54	return client;
	55	}
	56
	57	return NULL;
	58	}
	59
	60	static struct fio_client find_client_by_name(const char name)
	61	{
	62	struct fio_client *client;
	63	struct flist_head *entry;
	64
	65	flist_for_each(entry, &client_list) {
	66	client = flist_entry(entry, struct fio_client, list);
	67
	68	if (!strcmp(name, client->hostname))
	69	return client;
	70	}
	71
	72	return NULL;
	73	}
	74
	75	static void remove_client(struct fio_client *client)
	76	{
46c48f1f	77	dprint(FD_NET, "removed client <%s>\n", client->hostname);
b66570dc JA	78	flist_del(&client->list);
b66570dc JA	79	nr_clients--;
81179eec	80
b66570dc	81	free(client->hostname);
81179eec JA	82	if (client->argv)
	83	free(client->argv);
	84
b66570dc JA	85	free(client);
b66570dc JA	86	}
132159a5	87
81179eec JA	88	static void __fio_client_add_cmd_option(struct fio_client *client,
	89	const char *opt)
	90	{
	91	client->argc++;
	92	client->argv = realloc(client->argv, sizeof(char ) client->argc);
	93	client->argv[client->argc - 1] = strdup(opt);
	94	}
	95
	96	void fio_client_add_cmd_option(const char hostname, const char opt)
	97	{
	98	struct fio_client *client;
	99
	100	if (!hostname \|\| !opt)
	101	return;
	102
	103	client = find_client_by_name(hostname);
	104	if (!client) {
	105	log_err("fio: unknown client %s\n", hostname);
	106	return;
	107	}
	108
	109	__fio_client_add_cmd_option(client, opt);
	110	}
	111
a37f69b7	112	void fio_client_add(const char *hostname)
132159a5	113	{
b66570dc	114	struct fio_client *client;
132159a5	115
46c48f1f	116	dprint(FD_NET, "added client <%s>\n", hostname);
b66570dc	117	client = malloc(sizeof(*client));
a37f69b7	118	memset(client, 0, sizeof(*client));
81179eec	119
a37f69b7 JA	120	client->hostname = strdup(hostname);
a37f69b7 JA	121	client->fd = -1;
81179eec JA	122
	123	__fio_client_add_cmd_option(client, "fio");
	124
a37f69b7 JA	125	flist_add(&client->list, &client_list);
	126	nr_clients++;
	127	}
	128
	129	static int fio_client_connect(struct fio_client *client)
	130	{
	131	int fd;
132159a5	132
46c48f1f JA	133	dprint(FD_NET, "connect to host %s\n", client->hostname);
46c48f1f JA	134
b66570dc JA	135	memset(&client->addr, 0, sizeof(client->addr));
	136	client->addr.sin_family = AF_INET;
	137	client->addr.sin_port = htons(fio_net_port);
	138
a37f69b7	139	if (inet_aton(client->hostname, &client->addr.sin_addr) != 1) {
132159a5 JA	140	struct hostent *hent;
132159a5 JA	141
a37f69b7	142	hent = gethostbyname(client->hostname);
132159a5 JA	143	if (!hent) {
	144	log_err("fio: gethostbyname: %s\n", strerror(errno));
	145	return 1;
	146	}
	147
b66570dc	148	memcpy(&client->addr.sin_addr, hent->h_addr, 4);
132159a5 JA	149	}
	150
	151	fd = socket(AF_INET, SOCK_STREAM, 0);
	152	if (fd < 0) {
	153	log_err("fio: socket: %s\n", strerror(errno));
	154	return 1;
	155	}
	156
b66570dc	157	if (connect(fd, (struct sockaddr *) &client->addr, sizeof(client->addr)) < 0) {
132159a5	158	log_err("fio: connect: %s\n", strerror(errno));
cdf54d85	159	log_err("fio: failed to connect to %s\n", client->hostname);
132159a5 JA	160	return 1;
	161	}
	162
b66570dc	163	client->fd = fd;
81179eec	164	client->state = Client_connected;
132159a5 JA	165	return 0;
	166	}
	167
cc0df00a JA	168	void fio_clients_terminate(void)
	169	{
	170	struct flist_head *entry;
	171	struct fio_client *client;
	172
	173	flist_for_each(entry, &client_list) {
	174	client = flist_entry(entry, struct fio_client, list);
	175
	176	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0);
	177	}
	178	}
	179
	180	static void sig_int(int sig)
	181	{
	182	fio_clients_terminate();
	183	}
	184
	185	static void client_signal_handler(void)
	186	{
	187	struct sigaction act;
	188
	189	memset(&act, 0, sizeof(act));
	190	act.sa_handler = sig_int;
	191	act.sa_flags = SA_RESTART;
	192	sigaction(SIGINT, &act, NULL);
	193
	194	memset(&act, 0, sizeof(act));
	195	act.sa_handler = sig_int;
	196	act.sa_flags = SA_RESTART;
	197	sigaction(SIGTERM, &act, NULL);
	198	}
	199
0b8f30a5 JA	200	static void probe_client(struct fio_client *client)
	201	{
	202	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0);
	203	handle_client(client, 1);
	204	}
	205
81179eec JA	206	static int send_client_cmd_line(struct fio_client *client)
	207	{
	208	struct cmd_line_pdu *pdu;
	209	int i, ret;
	210
	211	pdu = malloc(sizeof(*pdu));
	212	for (i = 0; i < client->argc; i++)
	213	strcpy((char *) pdu->argv[i], client->argv[i]);
	214
	215	pdu->argc = cpu_to_le16(client->argc);
	216	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, sizeof(*pdu));
	217	free(pdu);
	218	return ret;
	219	}
	220
a37f69b7 JA	221	int fio_clients_connect(void)
	222	{
	223	struct fio_client *client;
	224	struct flist_head entry, tmp;
	225	int ret;
	226
cc0df00a JA	227	client_signal_handler();
cc0df00a JA	228
a37f69b7 JA	229	flist_for_each_safe(entry, tmp, &client_list) {
	230	client = flist_entry(entry, struct fio_client, list);
	231
	232	ret = fio_client_connect(client);
0b8f30a5	233	if (ret) {
a37f69b7	234	remove_client(client);
0b8f30a5 JA	235	continue;
	236	}
	237
	238	probe_client(client);
81179eec JA	239
	240	if (client->argc > 1)
	241	send_client_cmd_line(client);
a37f69b7 JA	242	}
	243
	244	return !nr_clients;
	245	}
	246
132159a5 JA	247	/*
	248	* Send file contents to server backend. We could use sendfile(), but to remain
	249	* more portable lets just read/write the darn thing.
	250	*/
a37f69b7	251	static int fio_client_send_ini(struct fio_client client, const char filename)
132159a5 JA	252	{
	253	struct stat sb;
	254	char p, buf;
	255	off_t len;
	256	int fd, ret;
	257
46c48f1f JA	258	dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
46c48f1f JA	259
132159a5 JA	260	fd = open(filename, O_RDONLY);
	261	if (fd < 0) {
	262	log_err("fio: job file open: %s\n", strerror(errno));
	263	return 1;
	264	}
	265
	266	if (fstat(fd, &sb) < 0) {
	267	log_err("fio: job file stat: %s\n", strerror(errno));
	268	return 1;
	269	}
	270
	271	buf = malloc(sb.st_size);
	272
	273	len = sb.st_size;
	274	p = buf;
	275	do {
	276	ret = read(fd, p, len);
	277	if (ret > 0) {
	278	len -= ret;
	279	if (!len)
	280	break;
	281	p += ret;
	282	continue;
	283	} else if (!ret)
	284	break;
	285	else if (errno == EAGAIN \|\| errno == EINTR)
	286	continue;
	287	} while (1);
	288
0b8f30a5 JA	289	if (len) {
	290	log_err("fio: failed reading job file %s\n", filename);
	291	return 1;
	292	}
	293
81179eec	294	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size);
132159a5 JA	295	free(buf);
	296	return ret;
	297	}
37db14fe	298
a37f69b7 JA	299	int fio_clients_send_ini(const char *filename)
	300	{
	301	struct fio_client *client;
	302	struct flist_head entry, tmp;
	303
	304	flist_for_each_safe(entry, tmp, &client_list) {
	305	client = flist_entry(entry, struct fio_client, list);
	306
	307	if (fio_client_send_ini(client, filename))
	308	remove_client(client);
	309	}
	310
	311	return !nr_clients;
	312	}
	313
a64e88da JA	314	static void convert_io_stat(struct io_stat dst, struct io_stat src)
	315	{
	316	dst->max_val = le64_to_cpu(src->max_val);
	317	dst->min_val = le64_to_cpu(src->min_val);
	318	dst->samples = le64_to_cpu(src->samples);
	319	/* FIXME */
ddcc0b69 JA	320	dst->mean = __le64_to_cpu(src->mean);
ddcc0b69 JA	321	dst->S = __le64_to_cpu(src->S);
a64e88da JA	322	}
	323
	324	static void convert_ts(struct thread_stat dst, struct thread_stat src)
	325	{
	326	int i, j;
	327
	328	dst->error = le32_to_cpu(src->error);
	329	dst->groupid = le32_to_cpu(src->groupid);
	330	dst->pid = le32_to_cpu(src->pid);
	331	dst->members = le32_to_cpu(src->members);
	332
	333	for (i = 0; i < 2; i++) {
	334	convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
	335	convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
	336	convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
	337	convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
	338	}
	339
	340	dst->usr_time = le64_to_cpu(src->usr_time);
	341	dst->sys_time = le64_to_cpu(src->sys_time);
	342	dst->ctx = le64_to_cpu(src->ctx);
	343	dst->minf = le64_to_cpu(src->minf);
	344	dst->majf = le64_to_cpu(src->majf);
	345	dst->clat_percentiles = le64_to_cpu(src->clat_percentiles);
	346	dst->percentile_list = NULL;
	347
	348	for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
	349	dst->io_u_map[i] = le32_to_cpu(src->io_u_map[i]);
	350	dst->io_u_submit[i] = le32_to_cpu(src->io_u_submit[i]);
	351	dst->io_u_complete[i] = le32_to_cpu(src->io_u_complete[i]);
	352	}
	353
	354	for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
	355	dst->io_u_lat_u[i] = le32_to_cpu(src->io_u_lat_u[i]);
	356	dst->io_u_lat_m[i] = le32_to_cpu(src->io_u_lat_m[i]);
	357	}
	358
	359	for (i = 0; i < 2; i++)
	360	for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
	361	dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
	362
	363	for (i = 0; i < 3; i++) {
	364	dst->total_io_u[i] = le64_to_cpu(src->total_io_u[i]);
93eee04a	365	dst->short_io_u[i] = le64_to_cpu(src->short_io_u[i]);
a64e88da JA	366	}
	367
	368	dst->total_submit = le64_to_cpu(src->total_submit);
	369	dst->total_complete = le64_to_cpu(src->total_complete);
	370
	371	for (i = 0; i < 2; i++) {
	372	dst->io_bytes[i] = le64_to_cpu(src->io_bytes[i]);
	373	dst->runtime[i] = le64_to_cpu(src->runtime[i]);
	374	}
	375
	376	dst->total_run_time = le64_to_cpu(src->total_run_time);
	377	dst->continue_on_error = le16_to_cpu(src->continue_on_error);
	378	dst->total_err_count = le64_to_cpu(src->total_err_count);
ddcc0b69 JA	379	dst->first_error = le32_to_cpu(src->first_error);
ddcc0b69 JA	380	dst->kb_base = le32_to_cpu(src->kb_base);
a64e88da JA	381	}
	382
	383	static void convert_gs(struct group_run_stats dst, struct group_run_stats src)
	384	{
	385	int i;
	386
	387	for (i = 0; i < 2; i++) {
	388	dst->max_run[i] = le64_to_cpu(src->max_run[i]);
	389	dst->min_run[i] = le64_to_cpu(src->min_run[i]);
	390	dst->max_bw[i] = le64_to_cpu(src->max_bw[i]);
	391	dst->min_bw[i] = le64_to_cpu(src->min_bw[i]);
	392	dst->io_kb[i] = le64_to_cpu(src->io_kb[i]);
	393	dst->agg[i] = le64_to_cpu(src->agg[i]);
	394	}
	395
	396	dst->kb_base = le32_to_cpu(src->kb_base);
	397	dst->groupid = le32_to_cpu(src->groupid);
	398	}
	399
	400	static void handle_ts(struct fio_net_cmd *cmd)
	401	{
	402	struct cmd_ts_pdu p = (struct cmd_ts_pdu ) cmd->payload;
	403
	404	convert_ts(&p->ts, &p->ts);
	405	convert_gs(&p->rs, &p->rs);
	406
	407	show_thread_status(&p->ts, &p->rs);
	408	}
	409
	410	static void handle_gs(struct fio_net_cmd *cmd)
	411	{
	412	struct group_run_stats gs = (struct group_run_stats ) cmd->payload;
	413
	414	convert_gs(gs, gs);
	415	show_group_stats(gs);
	416	}
	417
cf451d1e JA	418	static void handle_eta(struct fio_net_cmd *cmd)
	419	{
	420	struct jobs_eta je = (struct jobs_eta ) cmd->payload;
	421	int i;
	422
	423	je->nr_running = le32_to_cpu(je->nr_running);
	424	je->nr_ramp = le32_to_cpu(je->nr_ramp);
	425	je->nr_pending = le32_to_cpu(je->nr_pending);
	426	je->files_open = le32_to_cpu(je->files_open);
	427	je->m_rate = le32_to_cpu(je->m_rate);
	428	je->t_rate = le32_to_cpu(je->t_rate);
	429	je->m_iops = le32_to_cpu(je->m_iops);
	430	je->t_iops = le32_to_cpu(je->t_iops);
	431
	432	for (i = 0; i < 2; i++) {
	433	je->rate[i] = le32_to_cpu(je->rate[i]);
	434	je->iops[i] = le32_to_cpu(je->iops[i]);
	435	}
	436
	437	je->elapsed_sec = le32_to_cpu(je->nr_running);
	438	je->eta_sec = le64_to_cpu(je->eta_sec);
	439
	440	display_thread_status(je);
	441	}
	442
2e03b4b2 JA	443	static void handle_probe(struct fio_net_cmd *cmd)
	444	{
	445	struct cmd_probe_pdu probe = (struct cmd_probe_pdu ) cmd->payload;
	446
0b8f30a5 JA	447	log_info("Probe: hostname=%s, fio ver %u.%u.%u\n", probe->hostname,
0b8f30a5 JA	448	probe->fio_major, probe->fio_minor, probe->fio_patch);
2e03b4b2 JA	449	}
2e03b4b2 JA	450
0b8f30a5	451	static int handle_client(struct fio_client *client, int one)
37db14fe JA	452	{
37db14fe JA	453	struct fio_net_cmd *cmd;
a450e492	454	int done = 0;
37db14fe	455
70e0c316	456	while ((cmd = fio_net_recv_cmd(client->fd, 1)) != NULL) {
46c48f1f JA	457	dprint(FD_NET, "%s: got cmd op %d\n", client->hostname,
	458	cmd->opcode);
	459
a64e88da	460	switch (cmd->opcode) {
a64e88da	461	case FIO_NET_CMD_QUIT:
b66570dc	462	remove_client(client);
437377e1	463	free(cmd);
a450e492	464	done = 1;
437377e1	465	break;
a64e88da	466	case FIO_NET_CMD_TEXT:
0b8f30a5 JA	467	fprintf(f_out, "Client <%s>: ", client->hostname);
	468	fwrite(cmd->payload, cmd->pdu_len, 1, f_out);
	469	fflush(f_out);
37db14fe	470	free(cmd);
a64e88da JA	471	break;
	472	case FIO_NET_CMD_TS:
	473	handle_ts(cmd);
	474	free(cmd);
	475	break;
	476	case FIO_NET_CMD_GS:
	477	handle_gs(cmd);
	478	free(cmd);
	479	break;
cf451d1e JA	480	case FIO_NET_CMD_ETA:
	481	handle_eta(cmd);
	482	free(cmd);
	483	break;
2e03b4b2 JA	484	case FIO_NET_CMD_PROBE:
	485	handle_probe(cmd);
	486	free(cmd);
	487	break;
81179eec JA	488	case FIO_NET_CMD_START:
	489	client->state = Client_started;
	490	free(cmd);
	491	break;
	492	case FIO_NET_CMD_STOP:
	493	client->state = Client_stopped;
	494	free(cmd);
	495	break;
a64e88da JA	496	default:
	497	log_err("fio: unknown client op: %d\n", cmd->opcode);
	498	free(cmd);
	499	break;
37db14fe	500	}
a450e492	501
0b8f30a5	502	if (done \|\| one)
a450e492	503	break;
37db14fe JA	504	}
	505
	506	return 0;
	507	}
b66570dc JA	508
	509	int fio_handle_clients(void)
	510	{
	511	struct fio_client *client;
	512	struct flist_head *entry;
	513	struct pollfd *pfds;
82a4be1b	514	int i, ret = 0;
b66570dc JA	515
	516	pfds = malloc(nr_clients * sizeof(struct pollfd));
	517
82a4be1b JA	518	while (!exit_backend && nr_clients) {
	519	i = 0;
	520	flist_for_each(entry, &client_list) {
	521	client = flist_entry(entry, struct fio_client, list);
b66570dc	522
82a4be1b JA	523	pfds[i].fd = client->fd;
	524	pfds[i].events = POLLIN;
	525	i++;
	526	}
	527
	528	assert(i == nr_clients);
b66570dc	529
5c2857f9 JA	530	do {
	531	ret = poll(pfds, nr_clients, 100);
	532	if (ret < 0) {
	533	if (errno == EINTR)
	534	continue;
	535	log_err("fio: poll clients: %s\n", strerror(errno));
	536	break;
	537	} else if (!ret)
b66570dc	538	continue;
5c2857f9	539	} while (ret <= 0);
b66570dc JA	540
	541	for (i = 0; i < nr_clients; i++) {
	542	if (!(pfds[i].revents & POLLIN))
	543	continue;
	544
	545	client = find_client_by_fd(pfds[i].fd);
	546	if (!client) {
	547	log_err("fio: unknown client\n");
	548	continue;
	549	}
0b8f30a5	550	handle_client(client, 0);
b66570dc JA	551	}
	552	}
	553
	554	free(pfds);
b66570dc JA	555	return 0;
b66570dc JA	556	}