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Re: any tutorial/guide on linux system calls?
M K Saravanan wrote (mksarav@xxxxxxxxxxxxxxxxx):
> I have to take few hours of lectures on Linux system calls to the
> undergraduate students. Practically I have only used very few system calls.
> Is there any guide/tutorial on Linux System calls? any ptr. please.
I would recommend against only iterating all avail syscalls and describing
them. Afterall, students can read manuals and textbooks too :)
Your students may also find it interesting to know _what_ happens during a
syscall and _how_ unix/linux implements them (how the user->kernel mode switch
I made my students bypass the C wrappers and use gcc assembly to call syscalls
directly. It went well and we all had fun creating 600byte binaries which
called the pause syscall :-P
A blow by blow description of syscall implementation is at -
Asm tricks to use syscalls -
Lastly, calling syscalls from within the kernel -