Re: SCO's infringing files list

[Luiz Fernando Capitulino]

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 The return type here is "int" while Linus originally made the return type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@xxxxxxxxxxxxxxxxxxxx>
<http://www.telecentros.sp.gov.br>

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