forkpty - socket
- by Alexxx
Hi,
I'm trying to develop a simple "telnet/server" daemon which have to run a program on a new socket connection.
This part working fine.
But I have to associate my new process to a pty, because this process have some terminal capabilities (like a readline).
The code I've developped is (where socketfd is the new socket file descriptor for the new input connection) :
int masterfd, pid;
const char *prgName = "...";
char *arguments[10] = ....;
if ((pid = forkpty(&masterfd, NULL, NULL, NULL)) < 0)
perror("FORK");
else if (pid)
return pid;
else
{
close(STDOUT_FILENO);
dup2(socketfd, STDOUT_FILENO);
close(STDIN_FILENO);
dup2(socketfd, STDIN_FILENO);
close(STDERR_FILENO);
dup2(socketfd, STDERR_FILENO);
if (execvp(prgName, arguments) < 0)
{
perror("execvp");
exit(2);
}
}
With that code, the stdin / stdout / stderr file descriptor of my "prgName" are associated to the socket (when looking with ls -la /proc/PID/fd), and so, the terminal capabilities of this process doesn't work.
A test with a connection via ssh/sshd on the remote device, and executing "localy" (under the ssh connection) prgName, show that the stdin/stdout/stderr fd of this process "prgName" are associated to a pty (and so the terminal capabilities of this process are working fine).
What I am doing wrong?
How to associate my socketfd with the pty (created by forkpty) ?
Thank
Alex
