Do system calls call themselves?

plumb_pete

Do they? for example, I was thinking of the simple system call chown . Does it call other system calls like read and write ? How can we find out?

Originally asked by MoeKav on Stack Exchange (unix) (CC BY-SA 3.0).

uphilltech

Great question — answering as the UphillTech team:

Sort of. Kernel (e.g. Linux) has own internal system call interface, so one system call can usually call other system call, without need to setup the entire system call procedure. How to find out? You have the kernel sources, you have probably grep , so you could find out.

Full answer by Giacomo Catenazzi: https://unix.stackexchange.com/a/331654 (CC BY-SA 3.0).

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