[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_connected	= 1,
	Client_started		= 2,
	Client_stopped		= 3,
};

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);

		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;

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