System call vs POSIX call

[valdis.kletnieks at vt.edu]

On Thu, 16 Aug 2018 16:29:29 -0000, Nicholas Mc Guire said:

> Note that you can do system calls directly with system() but that is
> generaly not how you do it - you to through the glibc calls
> which do some checks before invoking the actual system call.

system() does a fork/exec of a process.

syscall() issues an arbitrary system call, but all marshalling of
parameters and return codes becomes your problem
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