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Open File vs Open file descriptiors

Hi,

What is the difference between open file descriptors and open files? I'm  using  linux centOS.

0
mokkan
Asked:
mokkan
3 Solutions
 
woolmilkporcCommented:
An "open file" is represented by an entry in a kernel table (one per process), and a file descriptor is an index to this table.

The application doesn't access a file directly but passes this descriptor to the kernel which uses it as a key to access the file "on behalf" of the application.

So an "open file descriptor" is an index to a table of "open files".

wmp
0
 
upanwarCommented:
This could also explain you.

http://www.netadmintools.com/art295.html
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roemelboemelCommented:
short - and not 100% accurate - answer:

"everything is a file"
an open file descriptor is a "thing" which represents an open file
long answer:
http://en.wikipedia.org/wiki/File_descriptor
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mokkanAuthor Commented:
should be fixed.
0

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