Re: SCO's infringing files list

Luiz Fernando Capitulino
2003-12-23T11:16:56Z

Hi Jesper,

Em Seg, 2003-12-22 às 21:01, Jesper Juhl escreveu:
> One thing I noticed.
>
> I'm looking at include/signal.h from linux-0.01 and the definition of the
> signal() function, the prototype in include/signal.h is
>
> void (*signal(int _sig, void (*_func)(int)))(int);
>
> I then take a look in my copy of UNIX Network Programming by W. Richard
> Stevens from 1990, and notice that he on page 46 says this :
>
> "...
> A process specifies how it wants a signal handled by calling the signal
> system call.
>
> #include <signal.h>
>
> int (*signal (int sig, void (*func)(int)))(int);
>
> ..."
>
>
> The return type here is "int" while Linus originally made the return type
> "void". If Linus had copied signal.h from UNIX the return type would have
> been "int"...

Seems to me the Linus version comes from Minix. Its return type is
void too:

http://www.minix-vmd.org/source/std/1.5/include/signal.h

--
Luiz Fernando N. Capitulino
<lcapitulino@prefeitura.sp.gov.br>
<http://www.telecentros.sp.gov.br>