[LCP]How to tell if a file is open?

[Madhav M.]

 Using fcntl(), information such as file descriptor is open or not, can be obtained.

error number EBADF indictes whether its an open file descriptor or not.

--

On Thu, 30 Aug 2001 10:35:11  
 David Filion wrote:
>
>
>
>I'm writing a routine that need to check if the stream it is writing to is open
>before it writes to it.  for example,  before I try to write and error messge to
>stdout, I want to make sure it is still open.  How can I do this?  (I remember
>reading how to somewhere but I can't remember where.)
>
>Thanx.
>
>
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