Knowing if a file descriptor is open

jorba101

New Member

Join Date: Jun 2008

Posts: 86
#1

Knowing if a file descriptor is open

Nov 20 '08, 08:32 AM

Is there any way, using fcntl() to know whether a filedescriptor is open or closed (*NIX environment)
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ashitpro

Recognized Expert Contributor

Join Date: Aug 2007

Posts: 542
#2

Nov 20 '08, 11:00 AM

Can't you use select() system call?
If you pass the closed file descriptor as parameter it will return the -1 indicating the error. And errno will be set to EBADF

Regards,
Ash
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