/// <summary>
/// Sends a request to the pseudo terminal to set the size to the specified one
/// </summary>
/// <param name="fd">File descriptor returned by ForkPty</param>
/// <param name="winSize">The desired window size</param>
/// <returns></returns>
public static int SetWinSize(int fd, ref UnixWindowSize winSize)
{
const long MAC_TIOCSWINSZ = 0x80087467;
var r = ioctl(fd, MAC_TIOCSWINSZ, ref winSize);
if (r == -1)
{
var lastErr = Marshal.GetLastWin32Error();
Console.WriteLine(lastErr);
}
return(r);
}
extern static int ioctl(int fd, long cmd, ref UnixWindowSize WinSz);
extern static int HeavyFork(string process, string [] args, string [] env, out int master, UnixWindowSize winSize);
/// <summary>
/// Forks a process and returns a file handle that is connected to the standard output of the child process
/// </summary>
/// <param name="programName">Name of the program to run</param>
/// <param name="args">Argument to pass to the program</param>
/// <param name="env">Desired environment variables for the program</param>
/// <param name="master">The file descriptor connected to the input and output of the child process</param>
/// <param name="winSize">Desired window size</param>
/// <returns></returns>
public static int ForkAndExec(string programName, string [] args, string [] env, out int master, UnixWindowSize winSize)
{
if (HeavyDuty)
{
return(HeavyFork(programName, args, env, out master, winSize));
}
else
{
var pid = forkpty(out master, IntPtr.Zero, IntPtr.Zero, ref winSize);
if (pid < 0)
{
throw new Exception("Could not create Pty");
}
if (pid == 0)
{
execve(programName, args, env);
}
return(pid);
}
}
extern static int forkpty(out int master, IntPtr dataReturn, IntPtr termios, ref UnixWindowSize WinSz);
