[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 <sys/un.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <signal.h>

#include "fio.h"
#include "server.h"
#include "flist.h"
#include "hash.h"

struct fio_client {
	struct flist_head list;
	struct flist_head hash_list;
	struct sockaddr_in addr;
	struct sockaddr_un addr_un;
	char *hostname;
	int port;
	int fd;

	char *name;

	int state;
	int skip_newline;
	int is_sock;

	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);

#define FIO_CLIENT_HASH_BITS	7
#define FIO_CLIENT_HASH_SZ	(1 << FIO_CLIENT_HASH_BITS)
#define FIO_CLIENT_HASH_MASK	(FIO_CLIENT_HASH_SZ - 1)
static struct flist_head client_hash[FIO_CLIENT_HASH_SZ];

static int handle_client(struct fio_client *client);

static void fio_client_add_hash(struct fio_client *client)
{
	int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);

	bucket &= FIO_CLIENT_HASH_MASK;
	flist_add(&client->hash_list, &client_hash[bucket]);
}

static void fio_client_remove_hash(struct fio_client *client)
{
	if (!flist_empty(&client->hash_list))
		flist_del_init(&client->hash_list);
}

static void fio_init fio_client_hash_init(void)
{
	int i;

	for (i = 0; i < FIO_CLIENT_HASH_SZ; i++)
		INIT_FLIST_HEAD(&client_hash[i]);
}

static struct fio_client *find_client_by_fd(int fd)
{
	int bucket = hash_long(fd, FIO_CLIENT_HASH_BITS) & FIO_CLIENT_HASH_MASK;
	struct fio_client *client;
	struct flist_head *entry;

	flist_for_each(entry, &client_hash[bucket]) {
		client = flist_entry(entry, struct fio_client, hash_list);

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

	fio_client_remove_hash(client);

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

	free(client);
	nr_clients--;
}

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

	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);
}

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

	if (!client || !opt)
		return;

	__fio_client_add_cmd_option(client, opt);
}

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

	client = malloc(sizeof(*client));
	memset(client, 0, sizeof(*client));

	INIT_FLIST_HEAD(&client->list);
	INIT_FLIST_HEAD(&client->hash_list);

	if (fio_server_parse_string(hostname, &client->hostname,
					&client->is_sock, &client->port,
					&client->addr.sin_addr))
		return -1;

	client->fd = -1;

	__fio_client_add_cmd_option(client, "fio");

	flist_add(&client->list, &client_list);
	nr_clients++;
	dprint(FD_NET, "client: added <%s>\n", client->hostname);
	*cookie = client;
	return 0;
}

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

	client->addr.sin_family = AF_INET;
	client->addr.sin_port = htons(client->port);

	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:%u\n", client->hostname,
								client->port);
		close(fd);
		return -1;
	}

	return fd;
}

static int fio_client_connect_sock(struct fio_client *client)
{
	struct sockaddr_un *addr = &client->addr_un;
	fio_socklen_t len;
	int fd;

	memset(addr, 0, sizeof(*addr));
	addr->sun_family = AF_UNIX;
	strcpy(addr->sun_path, client->hostname);

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

	len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
	if (connect(fd, (struct sockaddr *) addr, len) < 0) {
		log_err("fio: connect; %s\n", strerror(errno));
		close(fd);
		return -1;
	}

	return fd;
}

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

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

	if (client->is_sock)
		fd = fio_client_connect_sock(client);
	else
		fd = fio_client_connect_ip(client);

	if (fd < 0)
		return 1;

	client->fd = fd;
	fio_client_add_hash(client);
	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 signal %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_single_line_pdu *cslp;
	struct cmd_line_pdu *clp;
	unsigned long offset;
	void *pdu;
	size_t mem;
	int i, ret;

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

	/*
	 * Find out how much mem we need
	 */
	for (i = 0, mem = 0; i < client->argc; i++)
		mem += strlen(client->argv[i]) + 1;

	/*
	 * We need one cmd_line_pdu, and argc number of cmd_single_line_pdu
	 */
	mem += sizeof(*clp) + (client->argc * sizeof(*cslp));

	pdu = malloc(mem);
	clp = pdu;
	offset = sizeof(*clp);

	for (i = 0; i < client->argc; i++) {
		uint16_t arg_len = strlen(client->argv[i]) + 1;

		cslp = pdu + offset;
		strcpy((char *) cslp->text, client->argv[i]);
		cslp->len = cpu_to_le16(arg_len);
		offset += sizeof(*cslp) + arg_len;
	}

	clp->lines = cpu_to_le16(client->argc);
	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, mem);
	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));
		close(fd);
		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);
		close(fd);
		free(buf);
		return 1;
	}

	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size);
	free(buf);
	close(fd);
	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_client *client, struct fio_net_cmd *cmd)
{
	struct cmd_probe_pdu *probe = (struct cmd_probe_pdu *) cmd->payload;
	const char *os, *arch;

	os = fio_get_os_string(probe->os);
	if (!os)
		os = "unknown";

	arch = fio_get_arch_string(probe->arch);
	if (!arch)
		os = "unknown";

	log_info("hostname=%s, be=%u, os=%s, arch=%s, fio=%u.%u.%u\n",
		probe->hostname, probe->bigendian, os, arch, probe->fio_major,
		probe->fio_minor, probe->fio_patch);

	if (!client->name)
		client->name = strdup((char *) probe->hostname);
}

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;
		const char *name;
		int fio_unused ret;

		name = client->name ? client->name : client->hostname;

		if (!client->skip_newline)
			fprintf(f_out, "<%s> ", name);
		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(client, 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 fd %d\n", pfds[i].fd);
				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>
87aa8f19	12	#include <sys/un.h>
132159a5 JA	13	#include <netinet/in.h>
	14	#include <arpa/inet.h>
	15	#include <netdb.h>
9e22ecb0	16	#include <signal.h>
132159a5 JA	17
	18	#include "fio.h"
	19	#include "server.h"
b66570dc	20	#include "flist.h"
3c5f57e3	21	#include "hash.h"
132159a5	22
b66570dc JA	23	struct fio_client {
b66570dc JA	24	struct flist_head list;
bebe6398	25	struct flist_head hash_list;
b66570dc	26	struct sockaddr_in addr;
87aa8f19	27	struct sockaddr_un addr_un;
b66570dc	28	char *hostname;
bebe6398	29	int port;
b66570dc	30	int fd;
81179eec	31
b5296ddb JA	32	char *name;
b5296ddb JA	33
81179eec	34	int state;
17dd1764	35	int skip_newline;
87aa8f19	36	int is_sock;
81179eec JA	37
	38	uint16_t argc;
	39	char **argv;
	40	};
	41
	42	enum {
5c2857f9	43	Client_created = 0,
81179eec JA	44	Client_connected = 1,
	45	Client_started = 2,
	46	Client_stopped = 3,
5c2857f9	47	Client_exited = 4,
b66570dc JA	48	};
	49
	50	static FLIST_HEAD(client_list);
b66570dc	51
3c5f57e3 JA	52	#define FIO_CLIENT_HASH_BITS 7
	53	#define FIO_CLIENT_HASH_SZ (1 << FIO_CLIENT_HASH_BITS)
	54	#define FIO_CLIENT_HASH_MASK (FIO_CLIENT_HASH_SZ - 1)
bebe6398	55	static struct flist_head client_hash[FIO_CLIENT_HASH_SZ];
3c5f57e3	56
e951bdc4	57	static int handle_client(struct fio_client *client);
0b8f30a5	58
bebe6398	59	static void fio_client_add_hash(struct fio_client *client)
3c5f57e3 JA	60	{
	61	int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);
	62
	63	bucket &= FIO_CLIENT_HASH_MASK;
bebe6398	64	flist_add(&client->hash_list, &client_hash[bucket]);
3c5f57e3 JA	65	}
3c5f57e3 JA	66
bebe6398	67	static void fio_client_remove_hash(struct fio_client *client)
3c5f57e3	68	{
bebe6398 JA	69	if (!flist_empty(&client->hash_list))
bebe6398 JA	70	flist_del_init(&client->hash_list);
3c5f57e3 JA	71	}
	72
	73	static void fio_init fio_client_hash_init(void)
	74	{
	75	int i;
	76
bebe6398 JA	77	for (i = 0; i < FIO_CLIENT_HASH_SZ; i++)
bebe6398 JA	78	INIT_FLIST_HEAD(&client_hash[i]);
3c5f57e3 JA	79	}
3c5f57e3 JA	80
b66570dc JA	81	static struct fio_client *find_client_by_fd(int fd)
b66570dc JA	82	{
3c5f57e3	83	int bucket = hash_long(fd, FIO_CLIENT_HASH_BITS) & FIO_CLIENT_HASH_MASK;
b66570dc JA	84	struct fio_client *client;
	85	struct flist_head *entry;
	86
bebe6398 JA	87	flist_for_each(entry, &client_hash[bucket]) {
bebe6398 JA	88	client = flist_entry(entry, struct fio_client, hash_list);
b66570dc JA	89
	90	if (client->fd == fd)
	91	return client;
	92	}
	93
	94	return NULL;
	95	}
	96
b66570dc JA	97	static void remove_client(struct fio_client *client)
b66570dc JA	98	{
39e8e016	99	dprint(FD_NET, "client: removed <%s>\n", client->hostname);
b66570dc	100	flist_del(&client->list);
3c5f57e3	101
bebe6398	102	fio_client_remove_hash(client);
81179eec	103
b66570dc	104	free(client->hostname);
81179eec JA	105	if (client->argv)
81179eec JA	106	free(client->argv);
b5296ddb JA	107	if (client->name)
b5296ddb JA	108	free(client->name);
81179eec	109
b66570dc	110	free(client);
3c5f57e3	111	nr_clients--;
b66570dc	112	}
132159a5	113
fa2ea806 JA	114	static void __fio_client_add_cmd_option(struct fio_client *client,
fa2ea806 JA	115	const char *opt)
81179eec	116	{
39e8e016 JA	117	int index;
	118
	119	index = client->argc++;
81179eec	120	client->argv = realloc(client->argv, sizeof(char ) client->argc);
39e8e016 JA	121	client->argv[index] = strdup(opt);
39e8e016 JA	122	dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
81179eec JA	123	}
81179eec JA	124
fa2ea806	125	void fio_client_add_cmd_option(void cookie, const char opt)
81179eec	126	{
bebe6398	127	struct fio_client *client = cookie;
81179eec	128
bebe6398	129	if (!client \|\| !opt)
fa2ea806	130	return;
81179eec	131
fa2ea806	132	__fio_client_add_cmd_option(client, opt);
81179eec JA	133	}
81179eec JA	134
bebe6398	135	int fio_client_add(const char hostname, void *cookie)
132159a5	136	{
b66570dc	137	struct fio_client *client;
132159a5	138
b66570dc	139	client = malloc(sizeof(*client));
a37f69b7	140	memset(client, 0, sizeof(*client));
81179eec	141
3c5f57e3	142	INIT_FLIST_HEAD(&client->list);
bebe6398	143	INIT_FLIST_HEAD(&client->hash_list);
3c5f57e3	144
bebe6398 JA	145	if (fio_server_parse_string(hostname, &client->hostname,
	146	&client->is_sock, &client->port,
	147	&client->addr.sin_addr))
	148	return -1;
87aa8f19	149
bebe6398	150	client->fd = -1;
3c5f57e3	151
81179eec JA	152	__fio_client_add_cmd_option(client, "fio");
81179eec JA	153
a37f69b7 JA	154	flist_add(&client->list, &client_list);
a37f69b7 JA	155	nr_clients++;
bebe6398 JA	156	dprint(FD_NET, "client: added <%s>\n", client->hostname);
	157	*cookie = client;
	158	return 0;
a37f69b7 JA	159	}
a37f69b7 JA	160
87aa8f19	161	static int fio_client_connect_ip(struct fio_client *client)
a37f69b7 JA	162	{
a37f69b7 JA	163	int fd;
132159a5	164
b66570dc	165	client->addr.sin_family = AF_INET;
bebe6398	166	client->addr.sin_port = htons(client->port);
132159a5 JA	167
	168	fd = socket(AF_INET, SOCK_STREAM, 0);
	169	if (fd < 0) {
	170	log_err("fio: socket: %s\n", strerror(errno));
87aa8f19	171	return -1;
132159a5 JA	172	}
132159a5 JA	173
b66570dc	174	if (connect(fd, (struct sockaddr *) &client->addr, sizeof(client->addr)) < 0) {
132159a5	175	log_err("fio: connect: %s\n", strerror(errno));
a7de0a11 JA	176	log_err("fio: failed to connect to %s:%u\n", client->hostname,
a7de0a11 JA	177	client->port);
b94cba47	178	close(fd);
87aa8f19 JA	179	return -1;
	180	}
	181
	182	return fd;
	183	}
	184
	185	static int fio_client_connect_sock(struct fio_client *client)
	186	{
	187	struct sockaddr_un *addr = &client->addr_un;
	188	fio_socklen_t len;
	189	int fd;
	190
	191	memset(addr, 0, sizeof(*addr));
	192	addr->sun_family = AF_UNIX;
	193	strcpy(addr->sun_path, client->hostname);
	194
	195	fd = socket(AF_UNIX, SOCK_STREAM, 0);
	196	if (fd < 0) {
	197	log_err("fio: socket: %s\n", strerror(errno));
	198	return -1;
	199	}
	200
	201	len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
	202	if (connect(fd, (struct sockaddr *) addr, len) < 0) {
	203	log_err("fio: connect; %s\n", strerror(errno));
b94cba47	204	close(fd);
87aa8f19	205	return -1;
132159a5 JA	206	}
132159a5 JA	207
87aa8f19 JA	208	return fd;
	209	}
	210
	211	static int fio_client_connect(struct fio_client *client)
	212	{
	213	int fd;
	214
	215	dprint(FD_NET, "client: connect to host %s\n", client->hostname);
	216
87aa8f19 JA	217	if (client->is_sock)
	218	fd = fio_client_connect_sock(client);
	219	else
	220	fd = fio_client_connect_ip(client);
	221
	222	if (fd < 0)
	223	return 1;
	224
b66570dc	225	client->fd = fd;
bebe6398	226	fio_client_add_hash(client);
81179eec	227	client->state = Client_connected;
132159a5 JA	228	return 0;
	229	}
	230
cc0df00a JA	231	void fio_clients_terminate(void)
	232	{
	233	struct flist_head *entry;
	234	struct fio_client *client;
	235
60efd14e JA	236	dprint(FD_NET, "client: terminate clients\n");
60efd14e JA	237
cc0df00a JA	238	flist_for_each(entry, &client_list) {
	239	client = flist_entry(entry, struct fio_client, list);
	240
	241	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0);
	242	}
	243	}
	244
	245	static void sig_int(int sig)
	246	{
bebe6398	247	dprint(FD_NET, "client: got signal %d\n", sig);
cc0df00a JA	248	fio_clients_terminate();
	249	}
	250
	251	static void client_signal_handler(void)
	252	{
	253	struct sigaction act;
	254
	255	memset(&act, 0, sizeof(act));
	256	act.sa_handler = sig_int;
	257	act.sa_flags = SA_RESTART;
	258	sigaction(SIGINT, &act, NULL);
	259
	260	memset(&act, 0, sizeof(act));
	261	act.sa_handler = sig_int;
	262	act.sa_flags = SA_RESTART;
	263	sigaction(SIGTERM, &act, NULL);
	264	}
	265
0b8f30a5 JA	266	static void probe_client(struct fio_client *client)
0b8f30a5 JA	267	{
60efd14e JA	268	dprint(FD_NET, "client: send probe\n");
60efd14e JA	269
0b8f30a5	270	fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0);
e951bdc4	271	handle_client(client);
0b8f30a5 JA	272	}
0b8f30a5 JA	273
81179eec JA	274	static int send_client_cmd_line(struct fio_client *client)
81179eec JA	275	{
fa2ea806 JA	276	struct cmd_single_line_pdu *cslp;
	277	struct cmd_line_pdu *clp;
	278	unsigned long offset;
	279	void *pdu;
	280	size_t mem;
81179eec JA	281	int i, ret;
81179eec JA	282
39e8e016	283	dprint(FD_NET, "client: send cmdline %d\n", client->argc);
60efd14e	284
fa2ea806 JA	285	/*
	286	* Find out how much mem we need
	287	*/
	288	for (i = 0, mem = 0; i < client->argc; i++)
	289	mem += strlen(client->argv[i]) + 1;
	290
	291	/*
	292	* We need one cmd_line_pdu, and argc number of cmd_single_line_pdu
	293	*/
	294	mem += sizeof(clp) + (client->argc sizeof(*cslp));
	295
	296	pdu = malloc(mem);
	297	clp = pdu;
	298	offset = sizeof(*clp);
	299
	300	for (i = 0; i < client->argc; i++) {
	301	uint16_t arg_len = strlen(client->argv[i]) + 1;
	302
	303	cslp = pdu + offset;
	304	strcpy((char *) cslp->text, client->argv[i]);
	305	cslp->len = cpu_to_le16(arg_len);
	306	offset += sizeof(*cslp) + arg_len;
	307	}
81179eec	308
fa2ea806 JA	309	clp->lines = cpu_to_le16(client->argc);
fa2ea806 JA	310	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, mem);
81179eec JA	311	free(pdu);
	312	return ret;
	313	}
	314
a37f69b7 JA	315	int fio_clients_connect(void)
	316	{
	317	struct fio_client *client;
	318	struct flist_head entry, tmp;
	319	int ret;
	320
60efd14e JA	321	dprint(FD_NET, "client: connect all\n");
60efd14e JA	322
cc0df00a JA	323	client_signal_handler();
cc0df00a JA	324
a37f69b7 JA	325	flist_for_each_safe(entry, tmp, &client_list) {
	326	client = flist_entry(entry, struct fio_client, list);
	327
	328	ret = fio_client_connect(client);
0b8f30a5	329	if (ret) {
a37f69b7	330	remove_client(client);
0b8f30a5 JA	331	continue;
	332	}
	333
	334	probe_client(client);
81179eec JA	335
	336	if (client->argc > 1)
	337	send_client_cmd_line(client);
a37f69b7 JA	338	}
	339
	340	return !nr_clients;
	341	}
	342
132159a5 JA	343	/*
	344	* Send file contents to server backend. We could use sendfile(), but to remain
	345	* more portable lets just read/write the darn thing.
	346	*/
a37f69b7	347	static int fio_client_send_ini(struct fio_client client, const char filename)
132159a5 JA	348	{
	349	struct stat sb;
	350	char p, buf;
	351	off_t len;
	352	int fd, ret;
	353
46c48f1f JA	354	dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
46c48f1f JA	355
132159a5 JA	356	fd = open(filename, O_RDONLY);
132159a5 JA	357	if (fd < 0) {
e951bdc4	358	log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
132159a5 JA	359	return 1;
	360	}
	361
	362	if (fstat(fd, &sb) < 0) {
	363	log_err("fio: job file stat: %s\n", strerror(errno));
b94cba47	364	close(fd);
132159a5 JA	365	return 1;
	366	}
	367
	368	buf = malloc(sb.st_size);
	369
	370	len = sb.st_size;
	371	p = buf;
	372	do {
	373	ret = read(fd, p, len);
	374	if (ret > 0) {
	375	len -= ret;
	376	if (!len)
	377	break;
	378	p += ret;
	379	continue;
	380	} else if (!ret)
	381	break;
	382	else if (errno == EAGAIN \|\| errno == EINTR)
	383	continue;
	384	} while (1);
	385
0b8f30a5 JA	386	if (len) {
0b8f30a5 JA	387	log_err("fio: failed reading job file %s\n", filename);
b94cba47	388	close(fd);
c524ef72	389	free(buf);
0b8f30a5 JA	390	return 1;
	391	}
	392
81179eec	393	ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size);
132159a5	394	free(buf);
b94cba47	395	close(fd);
132159a5 JA	396	return ret;
132159a5 JA	397	}
37db14fe	398
a37f69b7 JA	399	int fio_clients_send_ini(const char *filename)
	400	{
	401	struct fio_client *client;
	402	struct flist_head entry, tmp;
	403
	404	flist_for_each_safe(entry, tmp, &client_list) {
	405	client = flist_entry(entry, struct fio_client, list);
	406
	407	if (fio_client_send_ini(client, filename))
	408	remove_client(client);
	409	}
	410
	411	return !nr_clients;
	412	}
	413
a64e88da JA	414	static void convert_io_stat(struct io_stat dst, struct io_stat src)
	415	{
	416	dst->max_val = le64_to_cpu(src->max_val);
	417	dst->min_val = le64_to_cpu(src->min_val);
	418	dst->samples = le64_to_cpu(src->samples);
802ad4a8 JA	419
	420	/*
	421	* Floats arrive as IEEE 754 encoded uint64_t, convert back to double
	422	*/
	423	dst->mean.u.f = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
	424	dst->S.u.f = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
a64e88da JA	425	}
	426
	427	static void convert_ts(struct thread_stat dst, struct thread_stat src)
	428	{
	429	int i, j;
	430
	431	dst->error = le32_to_cpu(src->error);
	432	dst->groupid = le32_to_cpu(src->groupid);
	433	dst->pid = le32_to_cpu(src->pid);
	434	dst->members = le32_to_cpu(src->members);
	435
	436	for (i = 0; i < 2; i++) {
	437	convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
	438	convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
	439	convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
	440	convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
	441	}
	442
	443	dst->usr_time = le64_to_cpu(src->usr_time);
	444	dst->sys_time = le64_to_cpu(src->sys_time);
	445	dst->ctx = le64_to_cpu(src->ctx);
	446	dst->minf = le64_to_cpu(src->minf);
	447	dst->majf = le64_to_cpu(src->majf);
	448	dst->clat_percentiles = le64_to_cpu(src->clat_percentiles);
802ad4a8 JA	449
	450	for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
	451	fio_fp64_t *fps = &src->percentile_list[i];
	452	fio_fp64_t *fpd = &dst->percentile_list[i];
	453
	454	fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
	455	}
a64e88da JA	456
	457	for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
	458	dst->io_u_map[i] = le32_to_cpu(src->io_u_map[i]);
	459	dst->io_u_submit[i] = le32_to_cpu(src->io_u_submit[i]);
	460	dst->io_u_complete[i] = le32_to_cpu(src->io_u_complete[i]);
	461	}
	462
	463	for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
	464	dst->io_u_lat_u[i] = le32_to_cpu(src->io_u_lat_u[i]);
	465	dst->io_u_lat_m[i] = le32_to_cpu(src->io_u_lat_m[i]);
	466	}
	467
	468	for (i = 0; i < 2; i++)
	469	for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
	470	dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
	471
	472	for (i = 0; i < 3; i++) {
	473	dst->total_io_u[i] = le64_to_cpu(src->total_io_u[i]);
93eee04a	474	dst->short_io_u[i] = le64_to_cpu(src->short_io_u[i]);
a64e88da JA	475	}
	476
	477	dst->total_submit = le64_to_cpu(src->total_submit);
	478	dst->total_complete = le64_to_cpu(src->total_complete);
	479
	480	for (i = 0; i < 2; i++) {
	481	dst->io_bytes[i] = le64_to_cpu(src->io_bytes[i]);
	482	dst->runtime[i] = le64_to_cpu(src->runtime[i]);
	483	}
	484
	485	dst->total_run_time = le64_to_cpu(src->total_run_time);
	486	dst->continue_on_error = le16_to_cpu(src->continue_on_error);
	487	dst->total_err_count = le64_to_cpu(src->total_err_count);
ddcc0b69 JA	488	dst->first_error = le32_to_cpu(src->first_error);
ddcc0b69 JA	489	dst->kb_base = le32_to_cpu(src->kb_base);
a64e88da JA	490	}
	491
	492	static void convert_gs(struct group_run_stats dst, struct group_run_stats src)
	493	{
	494	int i;
	495
	496	for (i = 0; i < 2; i++) {
	497	dst->max_run[i] = le64_to_cpu(src->max_run[i]);
	498	dst->min_run[i] = le64_to_cpu(src->min_run[i]);
	499	dst->max_bw[i] = le64_to_cpu(src->max_bw[i]);
	500	dst->min_bw[i] = le64_to_cpu(src->min_bw[i]);
	501	dst->io_kb[i] = le64_to_cpu(src->io_kb[i]);
	502	dst->agg[i] = le64_to_cpu(src->agg[i]);
	503	}
	504
	505	dst->kb_base = le32_to_cpu(src->kb_base);
	506	dst->groupid = le32_to_cpu(src->groupid);
	507	}
	508
	509	static void handle_ts(struct fio_net_cmd *cmd)
	510	{
	511	struct cmd_ts_pdu p = (struct cmd_ts_pdu ) cmd->payload;
	512
	513	convert_ts(&p->ts, &p->ts);
	514	convert_gs(&p->rs, &p->rs);
	515
	516	show_thread_status(&p->ts, &p->rs);
	517	}
	518
	519	static void handle_gs(struct fio_net_cmd *cmd)
	520	{
	521	struct group_run_stats gs = (struct group_run_stats ) cmd->payload;
	522
	523	convert_gs(gs, gs);
	524	show_group_stats(gs);
	525	}
	526
cf451d1e JA	527	static void handle_eta(struct fio_net_cmd *cmd)
	528	{
	529	struct jobs_eta je = (struct jobs_eta ) cmd->payload;
	530	int i;
	531
	532	je->nr_running = le32_to_cpu(je->nr_running);
	533	je->nr_ramp = le32_to_cpu(je->nr_ramp);
	534	je->nr_pending = le32_to_cpu(je->nr_pending);
	535	je->files_open = le32_to_cpu(je->files_open);
	536	je->m_rate = le32_to_cpu(je->m_rate);
	537	je->t_rate = le32_to_cpu(je->t_rate);
	538	je->m_iops = le32_to_cpu(je->m_iops);
	539	je->t_iops = le32_to_cpu(je->t_iops);
	540
	541	for (i = 0; i < 2; i++) {
	542	je->rate[i] = le32_to_cpu(je->rate[i]);
	543	je->iops[i] = le32_to_cpu(je->iops[i]);
	544	}
	545
	546	je->elapsed_sec = le32_to_cpu(je->nr_running);
	547	je->eta_sec = le64_to_cpu(je->eta_sec);
	548
	549	display_thread_status(je);
	550	}
	551
b5296ddb	552	static void handle_probe(struct fio_client client, struct fio_net_cmd cmd)
2e03b4b2 JA	553	{
2e03b4b2 JA	554	struct cmd_probe_pdu probe = (struct cmd_probe_pdu ) cmd->payload;
cca84643	555	const char os, arch;
2e03b4b2	556
cca84643 JA	557	os = fio_get_os_string(probe->os);
	558	if (!os)
	559	os = "unknown";
	560
	561	arch = fio_get_arch_string(probe->arch);
	562	if (!arch)
	563	os = "unknown";
	564
c71233ee	565	log_info("hostname=%s, be=%u, os=%s, arch=%s, fio=%u.%u.%u\n",
cca84643	566	probe->hostname, probe->bigendian, os, arch, probe->fio_major,
6eb24791	567	probe->fio_minor, probe->fio_patch);
b5296ddb JA	568
	569	if (!client->name)
	570	client->name = strdup((char *) probe->hostname);
2e03b4b2 JA	571	}
2e03b4b2 JA	572
e951bdc4	573	static int handle_client(struct fio_client *client)
37db14fe JA	574	{
	575	struct fio_net_cmd *cmd;
	576
60efd14e JA	577	dprint(FD_NET, "client: handle %s\n", client->hostname);
60efd14e JA	578
e951bdc4 JA	579	cmd = fio_net_recv_cmd(client->fd);
	580	if (!cmd)
	581	return 0;
c2c94585	582
e951bdc4	583	dprint(FD_NET, "client: got cmd op %d from %s\n",
c2c94585	584	cmd->opcode, client->hostname);
46c48f1f	585
e951bdc4 JA	586	switch (cmd->opcode) {
	587	case FIO_NET_CMD_QUIT:
	588	remove_client(client);
	589	free(cmd);
	590	break;
	591	case FIO_NET_CMD_TEXT: {
	592	const char buf = (const char ) cmd->payload;
b5296ddb	593	const char *name;
e951bdc4 JA	594	int fio_unused ret;
e951bdc4 JA	595
b5296ddb JA	596	name = client->name ? client->name : client->hostname;
b5296ddb JA	597
e951bdc4	598	if (!client->skip_newline)
b5296ddb	599	fprintf(f_out, "<%s> ", name);
e951bdc4 JA	600	ret = fwrite(buf, cmd->pdu_len, 1, f_out);
	601	fflush(f_out);
	602	client->skip_newline = strchr(buf, '\n') == NULL;
	603	free(cmd);
	604	break;
37db14fe	605	}
e951bdc4 JA	606	case FIO_NET_CMD_TS:
	607	handle_ts(cmd);
	608	free(cmd);
	609	break;
	610	case FIO_NET_CMD_GS:
	611	handle_gs(cmd);
	612	free(cmd);
	613	break;
	614	case FIO_NET_CMD_ETA:
	615	handle_eta(cmd);
	616	free(cmd);
	617	break;
	618	case FIO_NET_CMD_PROBE:
b5296ddb	619	handle_probe(client, cmd);
e951bdc4 JA	620	free(cmd);
	621	break;
	622	case FIO_NET_CMD_START:
	623	client->state = Client_started;
	624	free(cmd);
	625	break;
	626	case FIO_NET_CMD_STOP:
	627	client->state = Client_stopped;
	628	free(cmd);
	629	break;
	630	default:
	631	log_err("fio: unknown client op: %d\n", cmd->opcode);
	632	free(cmd);
	633	break;
37db14fe JA	634	}
37db14fe JA	635
e951bdc4	636	return 1;
37db14fe	637	}
b66570dc JA	638
	639	int fio_handle_clients(void)
	640	{
	641	struct fio_client *client;
	642	struct flist_head *entry;
	643	struct pollfd *pfds;
82a4be1b	644	int i, ret = 0;
b66570dc JA	645
	646	pfds = malloc(nr_clients * sizeof(struct pollfd));
	647
82a4be1b JA	648	while (!exit_backend && nr_clients) {
	649	i = 0;
	650	flist_for_each(entry, &client_list) {
	651	client = flist_entry(entry, struct fio_client, list);
b66570dc	652
82a4be1b JA	653	pfds[i].fd = client->fd;
	654	pfds[i].events = POLLIN;
	655	i++;
	656	}
	657
	658	assert(i == nr_clients);
b66570dc	659
5c2857f9 JA	660	do {
	661	ret = poll(pfds, nr_clients, 100);
	662	if (ret < 0) {
	663	if (errno == EINTR)
	664	continue;
	665	log_err("fio: poll clients: %s\n", strerror(errno));
	666	break;
	667	} else if (!ret)
b66570dc	668	continue;
5c2857f9	669	} while (ret <= 0);
b66570dc JA	670
	671	for (i = 0; i < nr_clients; i++) {
	672	if (!(pfds[i].revents & POLLIN))
	673	continue;
	674
	675	client = find_client_by_fd(pfds[i].fd);
	676	if (!client) {
3c5f57e3	677	log_err("fio: unknown client fd %d\n", pfds[i].fd);
b66570dc JA	678	continue;
b66570dc JA	679	}
e951bdc4	680	if (!handle_client(client)) {
28d3ab07 JA	681	log_info("client: host=%s disconnected\n",
	682	client->hostname);
	683	remove_client(client);
	684	}
b66570dc JA	685	}
	686	}
	687
	688	free(pfds);
b66570dc JA	689	return 0;
b66570dc JA	690	}