Le 26/07/2017 à 12:56, Enrico Weigelt, metux IT consult a écrit :
>
>> and even unistd's write() and seek() are wrappers for kernel's pwrite().
>
> No. Just look at the code. write()+seek() as different semantics
> than pwrite(), and they don't even need to be supported by some
> particular fd.

     AFAIK libc's pwrite() is the low-level (minimal) wrapper to the 
linux Write system-call. There isn't the concept of sequential 
read/write to a disk in the kernel and this paradigm is implemented by 
the means of libc's write().

     Didier