[sane-devel] Re: Need help porting sanei/sanei_thread.c

[Rene W. Olsen]

On 2005/09/08, Henning Meier-Geinitz wrote:

> Hi,
> 
> On Thu, Sep 08, 2005 at 03:37:13AM +0100, Rene W. Olsen wrote:
>> sanei/sanei_thread.c: In function `restore_sigpipe':
>> sanei/sanei_thread.c:310: error: storage size of 'act' isn't known
>> sanei/sanei_thread.c:312: warning: implicit declaration of function `sigaction'
>> sanei/sanei_thread.c:312: error: `SIGPIPE' undeclared (first use in this function)
> 
> All the signal stuff is defined in the system header file signal.h. If
> that's not available on Amigaos, maybe it just does not support signals?

Yes AmigaOS has singnal handling, but its diffrent from the linux way, so I dident understand what
went on there.

>> in this function
>> 
>> static void
>> restore_sigpipe( void )
>> {
>>     struct sigaction act;
>> 
>>     if( sigaction( SIGPIPE, NULL, &act ) == 0 ) {
>> 
>>         if( act.sa_handler == SIG_IGN ) {
>>             sigemptyset( &act.sa_mask );
>>             act.sa_flags   = 0;
>>             act.sa_handler = SIG_DFL;
>>             
>>             DBG( 2, "restoring SIGPIPE to SIG_DFL\n" );
>>             sigaction( SIGPIPE, &act, NULL );
>>         }
>>     }
>> }
>> 
>> The problem is that there isent any structure/macro on Amiga called sigaction.
>> And I cant really understand that sigaction first is definded as a structure and then
>> used as a macro.
> 
> "struct sigaction" and the function "sigaction" are different things.

Hmm okey, dident know that C allowed a struct and function to have the same name.. ohh well leve and
learn.

>> Any hint were to find some info on sigaction is welcome :D
> 
> "man sigaction" :-) You should find the manual page in google.

Yes I should have but I was really tired and dident think of googling for it. Me bad!!

>> From Linux man page:
>       #include <signal.h>
> 
>       int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact);

okey

Regards
Rene W. Olsen