Unix directory system calls question

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# 1  
Old 06-16-2011
Unix directory system calls question

I'm currently studying for my exam, and is practicing with sample exam questions.

However there is a question asking "Name THREE UNIX Directory system calls" and the answer given is "opendir, closedir and readdir", however the next question ask "Why is a write directory system call not included in the above list?"

I'm not sure about the answer to this question so can anyone help me out?
# 2  
Old 06-16-2011
Writing a directory means creating or deleting files in that directory. So you need not a write() system call. you use creat() or remove(), etc...
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