int main(int argc, char **argv)
{
int serfd;
if (argc != 4)
{
fprintf(stderr,
"Usage: %s <port> <device> <rate> - act as a serial forwarder on <port>\n"
"(listens to serial port <device> at baud rate <rate>)\n" ,
argv[0]);
exit(2);
}
if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
fprintf(stderr, "Warning: failed to ignore SIGPIPE.\n");
open_serial(argv[2], platform_baud_rate(argv[3]));
serfd = serial_source_fd(src);
open_server_socket(atoi(argv[1]));
for (;;)
{
fd_set rfds;
int maxfd = -1;
struct timeval zero;
int serial_empty;
int ret;
zero.tv_sec = zero.tv_usec = 0;
FD_ZERO(&rfds);
fd_wait(&rfds, &maxfd, serfd);
fd_wait(&rfds, &maxfd, server_socket);
wait_clients(&rfds, &maxfd);
serial_empty = serial_source_empty(src);
if (serial_empty)
ret = select(maxfd + 1, &rfds, NULL, NULL, NULL);
else
{
ret = select(maxfd + 1, &rfds, NULL, NULL, &zero);
check_serial();
}
if (ret >= 0)
{
if (FD_ISSET(serfd, &rfds))
check_serial();
if (FD_ISSET(server_socket, &rfds))
check_new_client();
check_clients(&rfds);
}
}
}
int
buf_recv(int sock, void *buf, size_t size)
{
ssize_t done;
unsigned char *ptr;
PJDLOG_ASSERT(sock >= 0);
PJDLOG_ASSERT(buf != NULL);
ptr = buf;
while (size > 0) {
fd_wait(sock, true);
done = recv(sock, ptr, size, 0);
if (done == -1) {
if (errno == EINTR)
continue;
return (-1);
} else if (done == 0) {
errno = ENOTCONN;
return (-1);
}
size -= done;
ptr += done;
}
return (0);
}
static int
msg_recv(int sock, struct msghdr *msg)
{
int flags;
PJDLOG_ASSERT(sock >= 0);
#ifdef MSG_CMSG_CLOEXEC
flags = MSG_CMSG_CLOEXEC;
#else
flags = 0;
#endif
for (;;) {
fd_wait(sock, true);
if (recvmsg(sock, msg, flags) == -1) {
if (errno == EINTR)
continue;
return (-1);
}
break;
}
return (0);
}
void wait_clients(fd_set *fds, int *maxfd)
{
struct client_list *c;
for (c = clients; c; c = c->next)
fd_wait(fds, maxfd, c->fd);
}
int main(int argc, char **argv) {
int serfd;
if (argc != 4) {
fprintf(stderr,
"Usage: %s <device> <rate> <file> - act as a serial forwarder on <port>\n"
"(listens to serial port <device> at baud rate <rate>)\n",
argv[0]);
exit(2);
}
if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
fprintf(stderr, "Warning: failed to ignore SIGPIPE.\n");
if (signal(SIGINT, sigproc) == SIG_ERR)
fprintf(stderr, "Warning: failed to set the SIGINT interruption.\n");
srcId = -1;
open_serial(argv[1], platform_baud_rate(argv[2]));
serfd = serial_source_fd(src);
open_file_fd(argv[3]);
dup2(filefd, 1);
for (;;) {
fd_set rfds;
int maxfd = -1;
struct timeval zero;
int serial_empty;
int ret;
zero.tv_sec = zero.tv_usec = 0;
FD_ZERO(&rfds);
fd_wait(&rfds, &maxfd, serfd);
serial_empty = serial_source_empty(src);
check_serial();
if (ret >= 0) {
if (FD_ISSET(serfd, &rfds))
check_serial();
}
}
}
static int
msg_send(int sock, const struct msghdr *msg)
{
PJDLOG_ASSERT(sock >= 0);
for (;;) {
fd_wait(sock, false);
if (sendmsg(sock, msg, 0) == -1) {
if (errno == EINTR)
continue;
return (-1);
}
break;
}
return (0);
}
/** Receive a call setting preset files of the program to execute.
*
* @param rid
* @param request
*/
static void ldr_set_files(ipc_callid_t rid, ipc_call_t *request)
{
size_t count = IPC_GET_ARG1(*request);
async_exch_t *vfs_exch = vfs_exchange_begin();
for (filc = 0; filc < count; filc++) {
ipc_callid_t callid;
int fd;
if (!async_state_change_receive(&callid, NULL, NULL, NULL)) {
async_answer_0(callid, EINVAL);
break;
}
async_state_change_finalize(callid, vfs_exch);
fd = fd_wait();
assert(fd == (int) filc);
}
vfs_exchange_end(vfs_exch);
async_answer_0(rid, EOK);
}
