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How can put a background process to the foreground

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# 1  
Old 03-02-2011
How can put a background process to the foreground
Hi, guys:

I am working on my own shell using c. When I put a process into the background, how can I put it back to the foreground using tcsetpgrp?

Thanks
# 2  
Old 03-02-2011
You can get the process group with getpgrp(); and then you tcsetpgrp(terminal_fd, pid);
# 3  
Old 03-03-2011
Thanks. Is "terminal_fd " built in ? Or do I need to define "terminal_fd"? Is it file descriptor of stdin?
# 4  
Old 03-03-2011
It's a file descriptor for the controlling terminal. Is this a homework assignment?
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