Mohamed El Dawy wrote:
Hi,
I have created this 5-liner system call, which basically opens a
file, write "Hello World" to it, and then returns. That's all.
Now, when I actually call it, it creates the file successfully but
writes nothing to it. The file is created and is only zero bytes. So,
either write didn't write, or close didn't close. Any help would be
greatly appreciated.
Well, the main thing wrong is that you are writing to a file from inside
the kernel, that is just wrong.. However likely the reason why the write
didn't work is that it expects an address inside userspace memory and
you've given it a character literal which is inside the kernel address
space.
--
Robert Hancock Saskatoon, SK, Canada
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Home Page: http://www.roberthancock.com/
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