Okay Derek, I spent a few minutes in some of my archives and I found something that should be close; it's at least 10 years old.
Pay attention to the Start_uproc function.
Use it like this:
cc = Start_uproc("my32bitexe",1,"arg1 arg2 arg3");
if (cc == 0)
{
/* all is well */
}
That creates a pair of fdes on the parent process, one for output and the other for input, and on the child ("my32bitexe") these pipes are connected to stdin and stdout.
The dup() system call is leveraged. Dup returns the lowest file descriptor available so that the child can close(0) to close stdin and then dup() the pipe file descriptor and because dup returns to lowest avail file descriptor, stdin (0) can now be assigned to the pipe file descriptor. Stdout (fdes 1) is handled exactly the same.
There is a Send_Uproc function that is used like this:
cc = Send_Uproc("my32bitexe",1,"string1","string2",string3);
it always expect 3 string values to be sent to a child although they might be null strings);
Send_uproc writes these 3 args onto stdin of the child process.
Similarly, there is a Recv_uproc that reads stdout of the child process.
There is also a Finish_uproc function to kill the child when finished.
The code as written will actually accomodate upto 8 child processes.
This should at least get you started.
If it ain't broke, I can fix that.
