System call vs POSIX call

Nicholas Mc Guire der.herr at hofr.at
Thu Aug 16 20:49:53 EDT 2018


On Thu, Aug 16, 2018 at 03:44:49PM -0400, valdis.kletnieks at vt.edu wrote:
> 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

yup - sorry - my bad - thats what I actually had in mind
but did not check.

thanks for your correction !

thx!
hofrat



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