File access. (BlockRead / BlockWrite)

[matthijs]

I'm just a beginner in programming under Linux, so bear with me if I overlook something obvious. When I try my sample code from
this topic under Windows, it runs fine.
If I run the same code under Linux I get a error " Access denied". This happens on the line

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reset(SourceF); I am sure I have got enough rights to perform the copy-ing (using a file in my own home dir. So what goes wrong?

[edit]
I did some further testing, After creating a file by save a memo to file. I came a little bit further. Now the program stops at

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     BlockWrite(destF, aBuffer, readCount, writeCount);
And says: "Privileged instruction".

[Anonymous]

Ha Ha, everything is harder in windows if you need to just copy a directory and sub directory and you
do not care if it is linux only use a exec command to do a  "cp -r /somedir /somedestdir", I line of code
can get her done. Same goes with the other hundreds of commands available on a linux system, take wget for
instance. Say you want your program to be able to suck all the pages off a web site just do a exec on wget www.somedomain.com .  

http://www.mail-archive.com/fpc-pascal@lists.freepascal.org/msg02908.html

[matthijs]

Well, I know there are external commands under Linux which make live a lot easier then under Windows, but ...
I'm trying to write an article for a Dutch magazine focused on Pascal, Delphi/Kylix and the likes. Sample codes should work under Windows aswell as under Linux.

So my question still stands: Why do a get a "Privileged Instruction" error in the BlockWrite-statement?