int iscsi_service(struct iscsi_context *iscsi, int revents)
{
if (revents & POLLERR) {
printf("iscsi_service: POLLERR, socket error\n");
iscsi->connect_cb(iscsi, ISCSI_STATUS_ERROR, NULL, iscsi->connect_data);
return -1;
}
if (revents & POLLHUP) {
printf("iscsi_service: POLLHUP, socket error\n");
iscsi->connect_cb(iscsi, ISCSI_STATUS_ERROR, NULL, iscsi->connect_data);
return -2;
}
if (iscsi->is_connected == 0 && iscsi->fd != -1 && revents&POLLOUT) {
iscsi->is_connected = 1;
iscsi->connect_cb(iscsi, ISCSI_STATUS_GOOD, NULL, iscsi->connect_data);
return 0;
}
if (revents & POLLOUT && iscsi->outqueue != NULL) {
if (iscsi_write_to_socket(iscsi) != 0) {
printf("write to socket failed\n");
return -3;
}
}
if (revents & POLLIN) {
if (iscsi_read_from_socket(iscsi) != 0) {
printf("read from socket failed\n");
return -4;
}
}
return 0;
}
int
iscsi_tcp_service(struct iscsi_context *iscsi, int revents)
{
if (iscsi->fd < 0) {
return 0;
}
if (iscsi->pending_reconnect) {
if (time(NULL) >= iscsi->next_reconnect) {
return iscsi_reconnect(iscsi);
} else {
if (iscsi->old_iscsi) {
return 0;
}
}
}
if (revents & POLLERR) {
int err = 0;
socklen_t err_size = sizeof(err);
if (getsockopt(iscsi->fd, SOL_SOCKET, SO_ERROR,
(char *)&err, &err_size) != 0 || err != 0) {
if (err == 0) {
err = errno;
}
iscsi_set_error(iscsi, "iscsi_service: socket error "
"%s(%d).",
strerror(err), err);
} else {
iscsi_set_error(iscsi, "iscsi_service: POLLERR, "
"Unknown socket error.");
}
if (iscsi->socket_status_cb) {
iscsi->socket_status_cb(iscsi, SCSI_STATUS_ERROR, NULL,
iscsi->connect_data);
iscsi->socket_status_cb = NULL;
}
return iscsi_service_reconnect_if_loggedin(iscsi);
}
if (revents & POLLHUP) {
iscsi_set_error(iscsi, "iscsi_service: POLLHUP, "
"socket error.");
if (iscsi->socket_status_cb) {
iscsi->socket_status_cb(iscsi, SCSI_STATUS_ERROR, NULL,
iscsi->connect_data);
iscsi->socket_status_cb = NULL;
}
return iscsi_service_reconnect_if_loggedin(iscsi);
}
if (iscsi->is_connected == 0 && revents&POLLOUT) {
int err = 0;
socklen_t err_size = sizeof(err);
struct sockaddr_in local;
socklen_t local_l = sizeof(local);
if (getsockopt(iscsi->fd, SOL_SOCKET, SO_ERROR,
(char *)&err, &err_size) != 0 || err != 0) {
if (err == 0) {
err = errno;
}
iscsi_set_error(iscsi, "iscsi_service: socket error "
"%s(%d) while connecting.",
strerror(err), err);
if (iscsi->socket_status_cb) {
iscsi->socket_status_cb(iscsi, SCSI_STATUS_ERROR,
NULL, iscsi->connect_data);
iscsi->socket_status_cb = NULL;
}
return iscsi_service_reconnect_if_loggedin(iscsi);
}
if (getsockname(iscsi->fd, (struct sockaddr *) &local, &local_l) == 0) {
ISCSI_LOG(iscsi, 2, "connection established (%s:%u -> %s)", inet_ntoa(local.sin_addr),
(unsigned)ntohs(local.sin_port),iscsi->connected_portal);
}
iscsi->is_connected = 1;
if (iscsi->socket_status_cb) {
iscsi->socket_status_cb(iscsi, SCSI_STATUS_GOOD, NULL,
iscsi->connect_data);
iscsi->socket_status_cb = NULL;
}
return 0;
}
if (revents & POLLIN) {
if (iscsi_read_from_socket(iscsi) != 0) {
return iscsi_service_reconnect_if_loggedin(iscsi);
}
}
if (revents & POLLOUT) {
if (iscsi_write_to_socket(iscsi) != 0) {
return iscsi_service_reconnect_if_loggedin(iscsi);
}
}
iscsi_timeout_scan(iscsi);
return 0;
}
int
iscsi_service(struct iscsi_context *iscsi, int revents)
{
if (revents & POLLERR) {
int err = 0;
socklen_t err_size = sizeof(err);
if (getsockopt(iscsi->fd, SOL_SOCKET, SO_ERROR,
&err, &err_size) != 0 || err != 0) {
if (err == 0) {
err = errno;
}
iscsi_set_error(iscsi, "iscsi_service: socket error "
"%s(%d).",
strerror(err), err);
} else {
iscsi_set_error(iscsi, "iscsi_service: POLLERR, "
"Unknown socket error.");
}
iscsi->socket_status_cb(iscsi, SCSI_STATUS_ERROR, NULL,
iscsi->connect_data);
return iscsi_service_reconnect_if_loggedin(iscsi);
}
if (revents & POLLHUP) {
iscsi_set_error(iscsi, "iscsi_service: POLLHUP, "
"socket error.");
iscsi->socket_status_cb(iscsi, SCSI_STATUS_ERROR, NULL,
iscsi->connect_data);
return iscsi_service_reconnect_if_loggedin(iscsi);
}
if (iscsi->is_connected == 0 && iscsi->fd != -1 && revents&POLLOUT) {
int err = 0;
socklen_t err_size = sizeof(err);
if (getsockopt(iscsi->fd, SOL_SOCKET, SO_ERROR,
&err, &err_size) != 0 || err != 0) {
if (err == 0) {
err = errno;
}
iscsi_set_error(iscsi, "iscsi_service: socket error "
"%s(%d) while connecting.",
strerror(err), err);
iscsi->socket_status_cb(iscsi, SCSI_STATUS_ERROR,
NULL, iscsi->connect_data);
return iscsi_service_reconnect_if_loggedin(iscsi);
}
DPRINTF(iscsi,2,"connection to %s established",iscsi->connected_portal);
iscsi->is_connected = 1;
iscsi->socket_status_cb(iscsi, SCSI_STATUS_GOOD, NULL,
iscsi->connect_data);
return 0;
}
if (revents & POLLOUT && iscsi->outqueue != NULL) {
if (iscsi_write_to_socket(iscsi) != 0) {
return iscsi_service_reconnect_if_loggedin(iscsi);
}
}
if (revents & POLLIN) {
if (iscsi_read_from_socket(iscsi) != 0) {
return iscsi_service_reconnect_if_loggedin(iscsi);
}
}
return 0;
}